EFJohnson Satellite Radio 002 9800 401 User Manual

MULTI-NET® 98xx SERIES  
OPERATING MANUAL  
Part No. 002-9800-401  
April 2001  
 
LAND MOBILE PRODUCT WARRANTY - The manufacturer’s  
warranty statement for this product is available from your product sup-  
plier or from the E.F. Johnson Company, 299 Johnson Avenue, Box  
1249, Waseca, MN 56093-0514. Phone (507) 835-6222.  
Copyright© 2001 by the E.F. Johnson Company  
The E.F. Johnson Company, which was founded in 1923, provides wire-  
less communication systems solutions for public safety, government, and  
commercial customers. The company designs, manufactures, and markets  
conventional and trunked radio systems, mobile and portable subscriber  
radios, repeaters, and Project 25 digital radio products.  
®
®
®
Viking Head/EFJohnson logo, Multi-Net , LTR , and Call Guard are  
registered trademarks of the E.F. Johnson Company. All other company  
and/or product names used in this manual are trademarks and/or  
registered trademarks of their respective manufacturer.  
 
SAFETY INFORMATION  
FCC EXPOSURE LIMITS  
This mobile radio transceiver was tested by the manufacturer with  
an appropriate antenna in order to verify compliance with Maximum Per-  
missible Exposure (MPE) limits set under Section 2.1091 of the FCC  
Rules and Regulations. The guidelines used in the evaluation are derived  
from Table 1 (B) titled “Limits For General Population/Uncontrolled  
Exposure” which is from FCC report OET bulletin #65.  
Table 1  
FCC Limits for Maximum Permissible Exposure (MPE)  
(A) Limits For Occupational/Controlled Exposure  
Electric Field MagneticField Power Density Averaging  
Frequency Range  
(MHz)  
2
2
Strength (E) Strength (H)  
(V/m) (A/m)  
(S)  
Time |E| ,|H| ,  
2
(mW/cm2 ) S (minutes)  
0.3-3.0  
614 1.63  
(100)*  
6
6
6
6
6
2
3.0-30  
1842/f  
61.4  
--  
4.89/f  
0.163  
--  
(900/f )*  
1.0  
30-300  
300-1500  
1500-100,000  
f/300  
5
--  
--  
(B) Limits For General Population/Uncontrolled Exposure  
Electric Field MagneticField Power Density Averaging  
Frequency Range  
(MHz)  
2
2
Strength (E) Strength (H)  
(V/m) (A/m)  
(S)  
Time |E| ,|H| ,  
2
(mW/cm2 ) S (minutes)  
0.3-1.34  
614 1.63  
(100)*  
30  
30  
30  
30  
30  
2
1.34-30  
824/f  
27.5  
--  
2.19/f  
0.073  
--  
(180/f )*  
0.2  
30-300  
300-1500  
1500-100,000  
f/1500  
1.0  
--  
--  
f = Frequency in MHz  
*Plane-wave equivalent power density  
4
 
SAFETY INFORMATION  
Table 2 lists the antenna whips and bases recommended for use in  
each frequency range. Each model of this radio was tested with the appro-  
priate antenna listed. The antenna was mounted in the center of the roof  
of a domestically manufactured 4-door passenger sedan. The radio manu-  
facturer has determined that the user and service personnel should remain  
one (1) meter in distance away from the antenna when transmitting. By  
maintaining this distance, these individuals are not exposed to radio  
frequency energy or magnetic fields in excess of the guidelines set forth  
in Table 1.  
NOTE: If the installer or user changes the type or location of the  
antenna, they should be aware of the MPE guidelines shown in  
Table 1 and take measures to comply with those guidelines.  
Table 2  
Recommended Antenna Whips and Bases  
(Antenna Manufacturer - Antenna Specialists)  
Frequency  
Whip Model No.  
Base Model No.  
136-144 MHz  
144-152 MHz  
152-162 MHz  
162-174 MHz  
400-430 MHz  
430-470 MHz  
470-512 MHz  
806-869 MHz  
890-960 MHz  
ASPJ1415  
ASPA1415  
ASPB1415  
ASPC1415  
ASPE1615  
ASPD1615  
ASPF1615  
ASPA1855  
ASPG1865  
KM220  
KM220  
KM220  
KM220  
KM220  
KM220  
KM220  
KM220  
KM220  
5
 
TABLE OF CONTENTS  
TABLE OF CONTENTS  
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
QUICK REFERENCE GUIDE. . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
CONTROLS AND DISPLAY. . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Rear Panel Jacks and Connectors. . . . . . . . . . . . . . . . . . . . . . . 13  
Display Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
GENERAL OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Numeric Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Alpha Tag Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
STANDARD CALLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Receiving a Telephone Call . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
Receiving Other Multi-Net Special Calls. . . . . . . . . . . . . . . . . 24  
GENERAL FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
6
 
TABLE OF CONTENTS  
Transmitter Thermal Foldback. . . . . . . . . . . . . . . . . . . . . . . . . 32  
OPTION SWITCHES AND MENU MODE . . . . . . . . . . . . . . . 32  
Using Menu Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
SYSTEM AND GROUP SCAN. . . . . . . . . . . . . . . . . . . . . . . . . 35  
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40  
Multi-Net and LTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . 40  
MULTI-NET FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
Standard and Special Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
LTR FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48  
Standard and Telephone Calls . . . . . . . . . . . . . . . . . . . . . . . . . 48  
Transpond. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49  
Priority and Block ID Codes . . . . . . . . . . . . . . . . . . . . . . . . . . 50  
Transmit Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50  
CONVENTIONAL FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . 50  
7
 
TABLE OF CONTENTS  
MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54  
Supervisory Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54  
Multi-Net Telephone Call Tones . . . . . . . . . . . . . . . . . . . . . . . 56  
LTR Telephone Call Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
Display Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
System Operator Programming . . . . . . . . . . . . . . . . . . . . . . . . 61  
Speaking Into Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
Licensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
8
 
QUICK REFERENCE GUIDE  
QUICK REFERENCE GUIDE  
System Scan  
Encryption  
Group Scan  
List  
Red - Transmit  
Amber - Transmit (Reduced Pwr)  
Green - Busy Conv. Group (Channel)  
List  
Monitor  
Select Switch  
On-Off/Volume  
Phone/  
UID  
Call Priority  
Group  
Option  
Horn Scan  
Alert Selected  
(Press/Rotate)  
(Press/Rotate)  
Power On/Off - Press on-off /volume control.  
Set Volume Level - Rotate on-off/volume control.  
Change System or Group - Press Select switch to enable system or group  
select mode (indicated by / or __). Then rotate Select switch to  
select desired system or group (see page 17).  
Select Menu Mode - Press FCN twice then rotate/press Select switch as  
required to display/select desired parameter (see page 32).  
Select Home System/Group - Press FCN then the Select switch.  
Scan On/Off - Press SCAN switch. Scan on =  
, Scanning occurring =  
scrolling underline (see page 35).  
Program System or Group Scan List - Press Select switch to enable  
system or group programming mode (same as when changing system  
or group), then press A/D switch. System in list =  
(see page 37).  
, Group in list =  
Set Squelch Level (Conv. Only) - Press FCN, then rotate Select switch  
with conventional system selected (see page 18).  
Monitor Before Transmitting (Conv. Only) - Take microphone off-hook  
to enable monitor mode (indicated by ). Channel is busy if indicator  
is green or someone is talking (see page 42).  
9
 
FEATURES  
General Features  
Up to approximately 100 1-group or 40 16-group systems programmable  
Multi-Net®, LTR®, and conventional operation  
Unique 8-character system and group identification tags  
System and group scan  
User programmable system and group scan lists  
Menu mode to control various functions  
Five programmable option switches  
Up to 16 banks selectable  
Proceed (clear-to-talk) tone  
Call indicator  
Time-out timer  
Horn alert  
Emergency switch  
Companding and Encryption (optional)  
Multi-Net Features  
Busy queuing (all calls)  
Roaming (auto-registration)  
Special calls such as unique ID and directed group  
Status messaging (1 of up to 8 messages can be sent)  
Transmit inhibit  
Receive priority calls  
LTR Features  
Busy queuing (telephone calls only)  
System search (telephone calls only)  
Transpond  
Transmit inhibit  
Receive priority calls  
Conventional Features  
Busy indicator  
Talk-around  
User-adjustable squelch level  
Call Guard® squelch control  
First and second priority channel sampling  
Monitor mode and Transmit disable on busy  
Receive-only groups  
NOTE: Dealer programming determines the availability of many of the  
preceding features.  
10  
 
CONTROLS AND DISPLAY  
CONTROLS AND DISPLAY  
Transmit/Busy  
Option Switches  
Speaker  
Indicator  
Microphone  
Jack  
On-Off/Volume  
Select Switch  
Front Panel Controls  
On-Off Volume - Pressing this knob turns power on and off. The vehicle  
ignition switch may also control power as described in “Power Turn-Off  
Delay” on page 30. Rotating this knob sets the speaker volume (see  
page 15).  
Select Switch - This switch changes the selected system or group and is  
also used for other functions such as selecting parameters in the menu  
mode.  
To change the system or group, press this knob to switch between the  
system and group select modes, and then rotate it to increase or decrease  
the system or group. Refer to “Selecting the System and Group” on  
page 17 for more information.  
This switch also has two alternate functions that are selected by first  
pressing the FCN switch. Refer to the FCN switch description which  
follows for more information.  
11  
 
CONTROLS AND DISPLAY  
Option Switches - The five front panel option switches can be  
programmed by your system operator to the functions listed below. Refer  
to the section indicated for more information on a function. The keycap  
usually indicates the function controlled by the switch.  
A/D - Scan list add/delete (see page 37)  
CG - Call Guard squelch disable (see page 52)  
EMER - Emergency switch (see page 26)  
ENCPT - Encryption on-off (see page 27)  
FCN - Function select (see following description)  
HORN - Horn alert on-off (see page 28)  
MON - Monitor mode on-off (see page 42)  
AUX - Option select (see page 29)  
PRI - Priority sampling on-off (see page 53)  
SCAN - Scan on-off (see page 35)  
STLH (AUX) - Stealth mode select (see page 31)  
TA - Talk-around on-off (see page 52)  
(Blank) - Not used (disabled)  
FCN (Function) Switch - This switch (if programmed) selects the  
following functions:  
Menu Mode Select - Press FCN twice (see page 32)  
Home Sys/Grp Select - FCN/press Select switch (see page 28)  
Conv Squelch Set - FCN/rotate Select switch (see page 18)  
Transmit/Busy Indicator - Indicates the following conditions:  
Red - Transmitter keyed, normal power output  
Orange - Transmitter keyed, power reduced because internal  
temperature is high  
Green - Busy conventional group (channel). Refer to “Conventional  
Operation” on page 41 for more information.  
Microphone Jack - Connection point for the microphone.  
Microphone Push-To-Talk (PTT) Switch (Not Shown) - Push-button on  
the microphone which is pressed to key the transmitter.  
12  
 
CONTROLS AND DISPLAY  
Speaker - The internal speaker is located behind the grille. An optional  
speaker can be connected to the external speaker jack located on the back  
(see “Speaker Jack” description which follows).  
Power  
Jack  
Antenna  
Jack  
Speaker  
Jack  
Rear Panel Jacks and Connectors  
Antenna Jack - Miniature UHF jack for connecting the 50-ohm antenna.  
Power Jack - Connection point for the power cable which attaches to the  
vehicle battery. A nominal 12-volt DC, negative ground power source is  
required.  
Speaker Jack - Connection point for an optional external 4.7-ohm, 5-watt  
speaker. The internal speaker is automatically disabled when a speaker is  
plugged into this jack.  
Accessory Cable (Not Shown) - This optional cable is used to connect  
functions such as ignition switch sense and horn alert to the transceiver.  
Data Cable (Not Shown) - This optional cable is used to connect data  
equipment such as modems and data terminals to the transceiver.  
13  
 
CONTROLS AND DISPLAY  
Phone/  
UID  
Group Scan  
List  
System Scan  
List  
Scan  
Selected  
Priority  
Groups  
Call  
Monitor  
Encryption  
16-Character  
Message Area  
Horn  
Alert  
Option  
Display Description  
16-Character Message Area - Indicates the selected system and group  
(see page 16) and also error conditions and status information.  
- Indicates that the displayed system is in the scan list and scanned  
normally (see page 37).  
- Indicates that the displayed group is in the scan list and scanned  
normally (see page 37).  
- Indicates that the selected group is programmed for telephone  
calls. With Multi-Net operation, it also indicates that the group is  
programmed for unique ID or directed group calls (see page 21).  
- Indicates that optional encryption is enabled (see page 27).  
- Indicates that the horn alert is enabled (see page 28).  
- Indicates that scanning is enabled (see page 35).  
14  
 
GENERAL OPERATION  
- Indicates that an option controlled by the AUX switch is enabled  
(see page 26).  
- Indicates that a call has been received on a group programmed for a  
call indicator (see page 26). To turn this indication off, press any key.  
- Indicates that the monitor mode is enabled. This mode disables Call  
Guard squelch and other squelch control features so that all messages are  
heard on conventional systems (see page 50).  
- When only  
is displayed, the selected or displayed group is  
scanned as a first priority group. When  
second priority group (see page 53).  
is displayed, it is scanned as a  
GENERAL OPERATION  
Power-Up Sequence  
When power is turned on, the backlight turns on, all segments in the  
display are momentarily enabled, and the last seven digits of the trans-  
ceiver part number are very briefly displayed. A beep then sounds (if  
tones are enabled) and the transceiver is ready to be used.  
Determining Volume Level  
The relative volume setting can be determined by noting the position  
of the index on the volume knob. You may also be able to enable a refer-  
ence tone or background noise for use in setting the volume. Proceed as  
follows:  
If key press tones are enabled, a short tone sounds when an option  
switch is pressed or the Select switch is pressed or rotated.  
15  
 
   
GENERAL OPERATION  
If a conventional system is selected, take the microphone off-hook and  
if someone is using the channel, voice is heard. If no one is using the  
channel, the squelch control can be adjusted counterclockwise as  
described in “Setting Squelch Control” on page 18 and noise is heard.  
It is not possible to unsquelch the transceiver in this manner when a  
Multi-Net or LTR system is selected.  
Backlight Operation  
The display and keypad backlight can be controlled by the BACK-  
LIGHT menu parameter (see page 40). The three states that can be  
selected are Bright, Dim, and Off. If this menu parameter is not select-  
able, the backlight is fixed in one of these states by programming.  
System/Group Display Information  
The selected system and group are displayed using either a Numeric  
or Alpha Tag display mode. The display mode is selectable if the S/G  
DISPL menu parameter is available (see page 33). Otherwise, it is fixed  
in one of these modes by programming.  
Numeric Mode - In the numeric mode, the selected system and group  
numbers are displayed on the top line as Sxx and Gxx, and the group  
alpha tag is displayed on the bottom line. For example, System 1, Group  
1 (CAR 220) is displayed as follows. The system alpha tag is not  
displayed in this mode.  
System Number  
Group Number  
Group Alpha Tag  
Numeric Display Mode  
Alpha Tag Mode - In the alpha tag mode, the system alpha tag is  
displayed on the top line and the group alpha tag is displayed on the  
16  
 
   
GENERAL OPERATION  
bottom line. For example, a “SECURITY” system and “CAR 220” group  
are displayed as follows. The system and group numbers are not  
displayed in this mode.  
System Alpha Tag  
Group Alpha Tag  
Alpha Tag Display Mode  
Selecting the System and Group  
The front panel Select switch is used to change the system and  
group. Pressing this switch toggles between the system and group select  
modes, and then rotating it increases or decreases the system or group.  
In the Numeric display mode (see preceding description), the system  
select mode is indicated when the arrow points to “Sxx”, and the group  
select mode is indicated when it points to “Gxx” (see following diagram).  
System Select  
Mode  
Group Select  
Mode  
Select Mode Indication With Numeric Display  
In the Alpha Tag display mode, the system select mode is indicated  
by an underline in the left-most character position of the system alpha  
tag. Likewise, the group select mode is indicated by an underline in the  
left-most position of the group alpha tag (see following diagram).  
17  
 
 
GENERAL OPERATION  
System Select  
Mode  
Group Select  
Mode  
Select Mode Indication With Alpha Tag Display  
The transceiver can be programmed so that after a change is made,  
the current select mode remains enabled or a default mode is selected  
after a delay of up to 15 seconds. This programming also controls the  
mode that is selected when power is turned on.  
Setting Squelch Control  
NOTE: This sets the squelch level used for conventional calls. The  
squelch level for Multi-Net and LTR calls is preset and not affected by  
this adjustment. For more information on the various operating modes,  
refer to page 40.  
If conventional systems are programmed, the squelch level can be  
set if the FCN option switch is enabled. Proceed as follows:  
1. Select a conventional system and then a group that is not busy. Take the  
microphone off-hook to enable monitoring.  
2. Press the FCN switch and then rotate the Select switch as you would a  
normal squelch control. Rotate it counterclockwise until receiver noise  
is heard and then clockwise slightly past the point where the noise  
mutes. The squelch adjust mode is indicated by “SQUELCH” on the  
upper line of the display, and the relative squelch level is indicated by  
a bar graph on the bottom line.  
3. To select the current level and exit this mode, press the Select switch.  
This also occurs automatically 2 seconds after no change is made or 8  
seconds after no activity.  
18  
 
 
STANDARD CALLS  
4. If both narrow and wide band channels are used, perform this adjust-  
ment on both types because separate settings are maintained.  
NOTE: Some readjustment may be required if weak messages are not  
heard or unsquelching occurs when no messages are present.  
STANDARD CALLS  
Introduction  
Most calls you make are probably the standard type described in this  
section. These calls are between you and another mobile or control  
station. The main difference between these calls and the other type that  
can be placed (special calls) is that no number is dialed using a keypad.  
The following procedure applies to all three types of operation (Multi-  
Net, LTR, and conventional).  
Placing a Standard Call  
1. Turn transceiver power on and set the volume as described starting on  
page 15. With conventional operation, also set the squelch as described  
2. Select the system and group of the mobile being called as described in  
3. If a conventional call is being placed, monitor the channel manually or  
automatically as described on page 42.  
4. Press (and hold) the microphone PTT (push-to-talk) switch to talk and  
release it to listen. Operation with Multi-Net, LTR, and conventional  
systems is as follows:  
Multi-Net and LTR Operation  
If the proceed tone is enabled (see page 30), it sounds shortly after  
the PTT switch is pressed to indicate that the radio system was  
19  
 
     
STANDARD CALLS  
successfully accessed. If it is not enabled, no tone sounds when the  
system is successfully accessed. The proceed and other tones can be  
disabled as described in “Tone Select” on page 32.  
If the radio system is busy, the busy tone sounds (see page 54) and  
“BUSY” is indicated on the lower line of the display. If you continue  
pressing the PTT switch, the system is accessed when it becomes  
available. With Multi-Net operation, if Busy Queuing is  
programmed, the call is automatically placed in a queue when the  
PTT switch is released (see page 43).  
If an out-of-range condition exists, the intercept tone sounds (see  
page 54) and “OUT-RNGE” is indicated on the lower line of the  
display. No more access attempts are made once this indication  
appears. Release the PTT switch and drive closer to the radio system  
or away from shielding structures and try again. With Multi-Net  
operation, if Roaming is programmed (see page 44), the transceiver  
automatically changes sites before an out-of-range condition occurs.  
Conventional Operation  
If the channel is busy and the Transmit Disable On Busy feature is  
programmed, “DSBL BSY” is indicated on the lower line of the  
display, the busy tone sounds, and the transmitter is disabled (see  
page 51).  
Otherwise, busy and out-of-range conditions are not indicated and  
speaking can begin when the PTT switch is pressed after monitoring  
the channel. If the proceed tone is enabled on conventional systems,  
it indicates when speaking can begin but does not indicate that the  
radio system has been successfully accessed.  
5. When the call is complete, place the microphone back on-hook.  
Receiving a Standard Call  
1. Turn transceiver power on and set the volume as described starting on  
page 15. With conventional operation, also set the squelch as described  
20  
 
 
TELEPHONE CALLS AND OTHER SPECIAL CALLS  
2. Select or scan the system and group programmed for the call you want  
to receive (see page 35 for scan information).  
3. When the message is received, the display usually changes to the  
system and group of the call. Take the microphone off-hook and press  
the PTT switch to talk and release it to listen. If scanning, a response  
may not automatically occur on the group of the call (see page 39).  
TELEPHONE CALLS AND  
OTHER SPECIAL CALLS  
Placing Telephone Calls  
NOTE: Telephone calls can be placed and received only if that service is  
available to you and your transceiver has been programmed appropri-  
ately. A microphone equipped with a telephone keypad is required to dial  
the telephone number.  
The telephone calling feature allows you to place and receive tele-  
phone calls using your transceiver. The following information describes  
how these calls are made with Multi-Net and LTR operation. If you can  
make telephone calls with conventional operation, the procedure may be  
somewhat different and your system operator will then provide additional  
information. Proceed as follows:  
1. Turn transceiver power on and set the volume as described starting on  
2. Select the system and group programmed for telephone calls. When a  
telephone or Multi-Net special call group is selected,  
is displayed.  
3. To obtain the dial tone, briefly press the PTT switch. If the proceed tone  
is used, press the PTT switch until a beep sounds. If a dial tone is then  
heard, proceed to step 4.  
21  
 
   
TELEPHONE CALLS AND OTHER SPECIAL CALLS  
Busy and Out-Of-Range Conditions  
Busy and out-of-range conditions are indicated the same as with  
Multi-Net and LTR standard calls described on page 19. The  
following additional features may be available with telephone calls:  
Busy - With LTR operation, if Busy Queuing is programmed (see  
page 48), the call is automatically placed in a queue when the PTT  
switch is released. The Busy Queuing mode is indicated by “IN  
QUEUE” in the display.  
Out-of-Range - With LTR operation, if the System Search feature is  
selected (see page 49), that feature is automatically selected when the  
PTT switch is released. The System Search mode is indicated by “SYS  
SRCH” in the display.  
4. With the dial tone sounding, dial the number using the 0-9 keys on the  
microphone keypad. If the microphone has a memory, you may also be  
able to recall the number from memory. The PTT switch does not need  
to be pressed while you are dialing if the transmitter automatically  
keys. If too much time elapses between digits, the call is terminated.  
5. After the number is dialed, release the PTT switch (if it was pressed).  
With Multi-Net operation, a short tone then sounds to indicate that the  
number was accepted by the system. Landside ringing (or a landside  
busy condition) should then be heard.  
6. When the other party answers, press the PTT switch and respond. The  
PTT switch must be pressed to talk and released to listen (the same as  
with mobile-to-mobile calls).  
7. When the call is finished, it should be terminated. This is usually done  
by pressing the # key, and termination is indicated by three beeps.  
Terminating the call in this manner prevents extra billing that may  
occur while the system automatically detects the end of the call.  
22  
 
 
TELEPHONE CALLS AND OTHER SPECIAL CALLS  
Receiving a Telephone Call  
1. Turn transceiver power on and set the volume as described starting on  
2. Select or scan the system and group programmed for telephone calls.  
When a telephone or Multi-Net special call group is selected,  
displayed.  
is  
3. When “ringing” is heard, press the PTT switch and respond. The PTT  
switch must be pressed to talk and released to listen the same as with  
standard calls.  
4. When the call is finished, it should be terminated as in step 7 of the  
preceding section.  
Placing Other Multi-Net Special Calls  
Multi-Net special calls include the telephone calls just described and  
also Unique ID and Directed Group calls. Unique ID calls are to specific  
mobiles, and Directed Group calls are to specific groups. These calls can  
be placed to other users assigned to your site or some other site that is  
part of the same network.  
As with telephone calls, a microphone with a telephone keypad is  
required to dial the number specifying the mobile being called. The  
numbers dialed are 4-8 digits long, and they will be provided by your  
system operator. The procedure used to place these calls is as follows:  
1. Select the system and group programmed for Unique ID and Directed  
Group calls. When one of these groups or a telephone group is selected,  
is displayed.The group alpha tag displayed on the lower line may  
also indicate when one of these groups is selected.  
2. Briefly press the PTT switch to obtain a dial tone. The procedure is  
similar to that used with telephone calls, and the Busy Queuing and  
Roaming features are available if programmed. Refer to step 4 near the  
bottom of page 19 for more information.  
23  
 
 
TELEPHONE CALLS AND OTHER SPECIAL CALLS  
3. Dial the 4-8 digit number using the microphone keypad. Refer to step  
4 on page 22 for more information.  
4. A tone then sounds to indicate that the call was accepted by the system.  
If this tone does not sound, an incorrect or unauthorized number may  
have been dialed. The call then proceeds as follows:  
Unique ID Call - Ringing is heard to indicate that the other transceiver  
is being rung. If there is no answer, ringing automatically stops after  
several rings and the call is terminated. When the other party answers,  
respond as with a standard call.  
Directed Group Call - A second tone sounds to indicate that the path  
is complete and you should transmit your message. No ringing occurs  
and the other party does not answer first.  
5. When the call is finished, it should be terminated by pressing the # key.  
Three beeps indicate that the call has been terminated.  
Receiving Other Multi-Net Special Calls  
When a Unique ID call is received, a ringing tone sounds similar to  
when a telephone call is received. Unique ID calls are received regardless  
of which group is selected. All that is required is that a system  
programmed for that call must be selected. To respond to a unique ID  
call, you may need to manually select the unique ID group if it is not  
selected automatically or some other group is displayed when the PTT  
switch is pressed.  
To receive and respond to a Directed Group call, the group  
programmed with the ID code being sent must be selected. This call is  
handled the same as the standard call described on page 20. No ringing  
occurs, and an incoming call is indicated when you hear the voice of the  
person placing the call.  
24  
 
GENERAL FEATURES  
Landside-Originate Calls  
Calls can be placed from a landside telephone to your transceiver if  
the radio system and transceiver have that capability. With most systems,  
a mobile can be called directly (each has a unique telephone number).  
With others, a mobile may be called as follows:  
1. Dial the number of the radio system in which the mobile is operating.  
2. When the system answers, a short tone sounds to indicate that the  
number of the mobile should be dialed. This is a 4-8 digit number that  
is supplied by your system operator, and it must be dialed using a tone-  
type telephone. If too much time elapses before dialing is started or  
between dialed digits, the call is terminated.  
3. If it is a telephone call, ringing is heard by the landside caller while the  
mobile is being rung. With other calls, a second tone sounds instead of  
the ringing tone and the landside caller should then begin talking.  
GENERAL FEATURES  
Bank Select  
A bank is a collection of selectable systems that have been set up for  
a specific application. For example, one bank could be programmed for  
operation in Minneapolis and another for operation in Milwaukee. Each  
bank is identified by a unique alpha tag, and up to sixteen banks can be  
programmed.  
Banks are selected by the BANK SEL menu parameter (see  
page 33). Rotate the Select switch to display “BANK SEL” on the top  
line and the current bank is then displayed on the bottom line. Press the  
Select switch to change the bank. If this menu parameter is not available,  
banks are not selectable.  
25  
 
   
GENERAL FEATURES  
Call Indicator  
The call indicator is “C” in the upper part of the display as shown in  
the following illustration. The purpose of this indication is to show that a  
call was received while you were away from the vehicle. Individual  
groups can be programmed for this feature and it then turns on when a  
call is received on one of those groups.  
Call  
Indicator  
This indicator is turned off by pressing any button or turning trans-  
ceiver power off and then on. If scanning and the “last received” configu-  
page 39), the system and group of the last call are displayed. Otherwise,  
the currently selected system/group is displayed.  
Emergency Switch  
If the EMER option switch is programmed (see page 32), it is used  
to set up or place a high priority call. When this switch is pressed,  
“EMERGNCY” is displayed on the lower line (unless this message has  
been disabled by programming).  
With Multi-Net systems, either automatic or manual operation can  
be programmed; with LTR and conventional systems, only manual opera-  
tion can be programmed. Operation in these modes is as follows. Your  
system operator may provide more information on how this switch should  
be used.  
Manual Operation - A specific system/group is automatically selected and  
the transceiver goes into a high-priority access mode. However, no call is  
placed until the PTT switch is manually pressed. This access mode mini-  
mizes, as much as possible, the chance that the system will be busy when  
the call is placed.  
26  
 
   
GENERAL FEATURES  
Automatic Operation - The transmitter automatically transmits an emer-  
gency message on the emergency system/group. The message is trans-  
mitted without pressing the PTT switch and at the highest priority.  
Emergency transmissions continue until an acknowledgment is received  
from the dispatcher.  
Encryption  
Voice encryption is an optional feature that prevents conversations  
from being monitored by casual eavesdropping and analog scanners. It  
does this by encrypting your voice so that it can be understood only by  
someone using a transceiver equipped with similar encryption device.  
Each group can be programmed so that when it is selected, encryp-  
tion is automatically enabled. When encryption is enabled,  
cated in the display as shown below.  
is indi-  
Encryption  
Indicator  
If you have the ENCRYPT menu parameter or ENCPT option  
switch, the encryption group programming can be temporarily over-  
ridden. Selecting another system or group causes encryption to revert to  
the status programmed for that group.  
Encrypted calls are received even if encryption is not enabled.  
However, encryption must be enabled to transmit an encrypted call.  
When transmitting an encrypted call, wait approximately 1 second before  
speaking. This gives the receiving encryption device time to establish  
synchronization which ensures that all of the first word is received. If the  
proceed tone is used (see page 30), speaking can begin as soon as it  
sounds because it is delayed for the required time.  
27  
 
 
GENERAL FEATURES  
Function (FCN) Switch  
If an option switch is programmed for FCN (function), it performs  
the following functions. If this switch is not programmed, these functions  
are not available. When the function select mode is active, “FCN” is  
displayed on the lower line of the display. The function mode is automati-  
cally exited after 8 seconds of no activity.  
Menu Mode Select - Pressing FCN twice selects the menu mode as  
described on page 33.  
Home System/Group Select - Pressing FCN and then the Select switch  
selects the home system/group as described in the next section.  
Squelch Adjust - Pressing FCN and then rotating the Select switch with a  
conventional system selected sets the squelch level as described on  
Home System/Group Select  
To select the preprogrammed Home system/group, simply press the  
FCN switch and then the Select switch. The Home system/group is then  
displayed and it becomes the selected system/group. If no home group  
has been programmed, the last selected group of the home system is  
selected. If you do not have a FCN switch, or no Home system is  
programmed, this feature is not available.  
Horn Alert  
If this feature has been installed by your system operator, it activates  
an external alert such as the vehicle horn or lights when a call is received  
on a group programmed for horn alert. When the horn alert is enabled,  
is displayed as shown in the following illustration.  
Horn Alert  
Enabled  
28  
 
     
GENERAL FEATURES  
When enabled, the horn alert pulses on and off for 1-8 cycles and  
then goes back to the disabled state. To change the currently selected horn  
alert mode, the HORN option switch or HRN ALRT menu parameter can  
be used if available (see page 32).  
The horn alert is programmed to operate in the manual or automatic  
mode (see descriptions which follow). If the ignition switch does not  
control transceiver power, only the front panel power switch affects oper-  
ation when applicable. Refer to “Power Turn-Off Delay” on page 30 for  
more information.  
Manual Off/On Mode  
The horn alert mode does not change when power is turned on and  
off by either the ignition switch or power switch. Therefore, the horn alert  
is entirely controlled by either the HORN option switch or menu  
parameter.  
Auto Off/On Mode  
Ignition Switch - The horn alert always turns off when the ignition switch  
is turned on, and always turns on when the ignition switch is turned off (if  
there is a turn-off delay).  
Power Switch - The horn alert always reverts to the off condition when  
power is turned on by the power switch.  
NOTE: The preceding automatic operation overrides any mode that may  
have been selected by the HORN option switch or HRN ALRT menu  
parameter.  
Option Select  
The AUX switch or OPTION menu parameter can be used to control  
an accessory that may have been installed by your system operator. If the  
switch is used, the enabled condition is indicated by  
in the display.  
29  
 
 
GENERAL FEATURES  
Power Turn-Off Delay  
Your transceiver may have been installed so that the vehicle ignition  
switch as well as the front-panel power switch control transceiver power.  
If this is the case, both the ignition switch and the front panel power  
switch must be on for transceiver power to turn on.  
When the ignition switch controls power, turn-off delays of Imme-  
diate, 10, 20, 30, 40, or 50 minutes, 1, 2, 4, 8, 10, 12, or 16 hours or  
Forever can be programmed. The delay can be overridden at any time by  
turning power off using the front-panel power switch or turning the igni-  
tion switch back on.  
A power turn-off delay allows features such as the horn alert and call  
indicator to remain active for a time after the ignition switch is turned off.  
At the same time, advantages of ignition switch control are utilized such  
as preventing battery discharge that may occur if the transceiver is acci-  
dentally left on for an extended period (see page 62).  
Proceed (Clear-To-Talk) Tone  
This is a short tone that sounds shortly after the PTT switch is  
pressed to indicate that the radio system has been accessed and speaking  
can begin. This tone can be programmed so that it sounds on Multi-Net  
and LTR systems but not conventional systems. In addition, this and other  
tones can be disabled on all systems by the TONES menu parameter (see  
“Tone Select” on page 32) or system operator programming, and either a  
standard or loud (two-pitch) tone can be programmed.  
On Multi-Net and LTR systems, if the radio system is busy when  
making a call, the busy tone sounds instead of the proceed tone and  
“BUSY” is indicated on the bottom line of the display. If the PTT switch  
is held down, the system is accessed and the proceed tone sounds when it  
is no longer busy. If an out-of-range condition occurs, the intercept tone  
sounds and “OUT-RNGE” is indicated in the display. The PTT switch  
must be released to make another call attempt. Refer to page 54 for more  
information on the busy and intercept tones.  
30  
 
   
GENERAL FEATURES  
On conventional systems, the Transmit Disable On Busy feature can  
be used to automatically perform monitoring (see page 51). The proceed  
tone then does not sound if the channel is busy. Otherwise, the proceed  
tone (if enabled) sounds on conventional systems even if the channel is  
busy.  
With all operating modes, if encryption is used, a 0.9-second delay  
occurs before this tone sounds and two beeps are heard instead of one. A  
short delay may also occur with conventional calls. These delays ensure  
that the radio path is complete before you begin talking so that part of  
your first word is not lost.  
Stealth Mode  
The stealth mode disables the following tones and indicators so that  
they do not reveal that you are transmitting or otherwise indicate your  
presence. The speaker audio and display remain enabled in this mode.  
All tones (see “Tone Select” on page 32)  
The front panel transmit/busy indicator (see page 16)  
Display backlight  
The stealth mode can be selected by an option switch or the  
STEALTH menu parameter (see page 33), or is fixed in the on or off  
mode by programming. There is no special indication that this mode is  
selected except “On” is displayed under “STEALTH” in the menu mode.  
Time-Out Timer  
The time-out timer disables the transmitter if it is keyed continu-  
ously for longer than the programmed time. It can be programmed for  
0.5 - 5.0 minutes or disabled entirely. If the transmitter is keyed continu-  
ously for longer than the programmed time, the transmitter is disabled,  
“TIMEOUT” is indicated on the lower line of the display, and the inter-  
cept tone sounds. The timer and tone are reset by releasing the PTT  
switch. Ten seconds before time-out occurs, a beep sounds to indicate that  
time-out is approaching. There is also a timer that can be programmed to  
prevent transmitting for up to one minute after time-out occurs.  
31  
 
   
OPTION SWITCHES AND MENU MODE  
One use of the time-out timer feature is to prevent a repeater from  
being kept busy for an extended period by an accidentally keyed trans-  
mitter. It can also prevent possible damage to the transmitter caused by  
transmitting for an excessively long period.  
Tone Select  
If the TONES menu parameter is selectable, the tones that sound can  
be selected. Otherwise, the tones that sound are fixed by programming.  
The following choices are available. Refer to page 33 for more informa-  
tion on using the menu mode.  
Silent - All tones are disabled.  
Key Beep - Only the Select switch and key press tones are enabled.  
Alert - All tones except the preceding Key Beep tones are enabled.  
All Tones - Both the Key Beep and Alert tones are enabled.  
Transmitter Thermal Foldback  
If the transmitter temperature increases to the point where damage to  
the transceiver could result, power is automatically cut back. When this  
happens, the transmit indicator on the front panel is orange instead of red  
when the transmitter is keyed. After sufficient cooling occurs, power  
output returns to the normal level and the indicator changes back to red.  
One time when this indication could occur is if you transmit for an  
extended period.  
OPTION SWITCHES AND MENU  
MODE  
Option Switches  
All five option switches on the front panel are programmable by  
your system operator. The available option switch and menu mode func-  
tions are shown in the table on page 34. Those which can be assigned to  
an option switch are indicated by an entry in the “Option Switch”  
32  
 
     
OPTION SWITCHES AND MENU MODE  
column. Refer to the page listed in this table for a description of the func-  
tion. If a function is controlled by an option switch, it cannot be  
controlled by the menu mode and vice versa. Some switches may not be  
used and are then disabled.  
Menu Mode Introduction  
The menu mode is selected by pressing the FCN switch twice. If this  
switch is not programmed, the menu mode is not available. Functions  
which can be controlled by the menu mode are indicated by an entry in  
the “Menu Items” column of the table on page 34. Refer to the page listed  
in the table for a description of the function. Some functions may not be  
used, may be in a fixed state, or may be controlled by an option switch.  
The menu parameter that controls that function is then not displayed.  
Using Menu Mode  
To use the menu mode, proceed as follows:  
1. To select the menu mode, press FCN FCN (the FCN switch twice). The  
menu display is shown below. The top line indicates the function being  
edited, and the bottom line indicates the current status of that function  
Function  
Status  
2. To display the various functions that are controllable by the menu mode  
(top line indication), rotate the Select switch. The currently selected  
status of that function is displayed on the bottom line.  
3. To change the selected status, press the Select switch. The selections  
displayed for each menu function are shown on page 60.  
4. To display another menu function, rotate the Select switch. Then  
change the status if desired as described in the preceding step.  
33  
 
 
OPTION SWITCHES AND MENU MODE  
Menu Mode and Option Switch Functions  
Option See Descrip.  
Function  
Menu Items  
Switch  
on Page  
Add/delete (scan list prg)  
Backlight adjust  
Bank select  
Caller ID [1]  
Call Guard Sq. disable  
Emergency  
Encryption on-off  
Function select  
Home sys/grp select  
---  
BACKLGHT  
BANK SEL  
CALL ID  
---  
A/D  
---  
---  
--  
CG  
EMER  
ENCPT  
FCN  
---  
ENCRYPT  
---  
---  
FCN then  
press Sel Sw  
HORN  
---  
FCN (twice)  
MON  
AUX  
PRI  
Horn Alert on-off  
LTR system search  
Menu mode select  
Monitor mode select  
Option select  
Priority sampling on-off PRIORITY  
Roaming on-off [1]  
Scan on-off  
HRN ALRT  
SYS SRCH  
---  
---  
OPTION  
ROAMING  
---  
---  
SCAN  
---  
---  
---  
Scan Method Select  
Scan type select  
SCAN SEL  
SCN TYPE  
SCN CONT  
SCN SAVE  
STATUS  
STEALTH  
---  
Scan continue on-off  
Scan list save mode  
Status message select [1]  
Stealth mode select  
Squelch adjust  
---  
STAT  
STLH  
FCN then  
rotate Sel Sw  
---  
System/group display  
mode  
S/G DISPL  
Talk-around on-off  
Tone type select  
TALKARND  
TONES  
TA  
---  
NOTE: Parameters left blank are not available.  
[1] Available with Multi-Net operation only.  
34  
 
 
SYSTEM AND GROUP SCAN  
5. The selected status conditions for the various functions are saved when  
the menu mode is exited in one of the following ways:  
Pressing the FCN switch again  
Pressing the PTT switch  
Automatically when time-out occurs 2 seconds after a change is  
made or 8 seconds after no changes are made.  
NOTE: Calls cannot be received or transmitted while the menu mode is  
selected.  
SYSTEM AND GROUP SCAN  
Introduction  
The scan feature monitors, in sequence, the programmed systems  
and/or groups in the scan list. When a message is detected that the trans-  
ceiver is programmed to receive, scanning stops and the message is  
received. Shortly after the message is complete, scanning resumes (unless  
it has been disabled).  
System Scanning - System scanning detects calls on all systems that are  
in the system scan list. When system scanning is not used, calls are  
detected on only the currently selected system.  
Group Scanning - Group scanning detects calls on all selectable groups in  
the current or scanned systems that are in the group scan list. When group  
scanning is not used, calls are detected on only the currently selected  
group or if system scanning, on the last selected group of each system.  
System and/or group scanning are turned on and off by the SCAN  
option switch. When system and/or group scanning is enabled by this  
switch,  
is indicated in the display (see following illustration). Then  
when system or group scanning is actually occurring, a scrolling under-  
line is displayed under each character in the upper line of the display. The  
microphone must be on-hook for scanning to occur (unless off-hook  
detection has been disabled by programming).  
35  
 
   
SYSTEM AND GROUP SCAN  
System Scan List  
Group Scan List  
System or Group  
System or Group  
Scanning Occurring  
Scanning Selected  
The type of scanning selected is determined by the menu mode SCN  
TYPE parameter (see page 33). If that parameter is not selectable, the  
type of scanning is fixed by programming. The available scan types are as  
follows. Single and multiple site scan may also be selectable (see  
page 37).  
SYS-GRP - Both system and group  
GRP ONLY - Group scanning only  
OFF - Both types disabled (SCAN switch non-functional)  
If the SCAN option switch is not programmed, the selected mode is  
always enabled. If the switch is enabled but the menu SCN TYPE param-  
eter is not selectable, the scan type is fixed by programming.  
Group scanning can be selectively disabled on systems by program-  
ming. It then does not occur on those systems even if enabled as just  
described. The selected system and group can be changed while scanning  
using the Select switch in the normal manner. Scanning resumes shortly  
after the change is made.  
When a call is received in the scan mode, the display changes to the  
system and group of the call. Programming determines if this change is  
temporary (until scanning resumes) or permanent, and if a response  
occurs on the system/group of the call or the selected system/group. Refer  
36  
 
SYSTEM AND GROUP SCAN  
Single and Multiple Site Scan  
Single and Multiple site scanning (see descriptions which follow)  
are selectable if the SCAN SEL menu parameter if it is available. If this  
parameter is not available, scanning is fixed in one of these states by  
programming. If you can select this parameter, your system operator may  
provide more information on which type to use.  
Single Site Scan - This type scans only Multi-Net systems that access the  
site of the current system, and it usually must be selected with a Multi-Net  
system displayed. If an LTR or conventional system is displayed and it  
cannot be selected, an error tone sounds and “NOT MULTI” is displayed.  
Multiple Site Scan - This type scans all systems in the scan list, and it must  
be used to scan LTR and conventional systems.  
Scan List Programming  
General  
NOTE: The selected (displayed) system and group are always scanned,  
even if they are deleted from the scan list.  
The system and group scan lists are programmed using the A/D  
(add/delete) option switch. Pressing this switch changes the status of the  
displayed system or group. The displayed system is in the scan list and  
scanned normally when  
is displayed. Likewise, the displayed group is  
in the scan list and scanned normally when  
preceding illustration).  
is displayed (see  
The system/group select mode described on page 17 also controls if  
the system or group scan list is changed when the A/D switch is pressed.  
For example, to change the scan list status of the displayed system, press  
the Select switch if necessary so that the system select mode is indicated  
and then press the A/D switch.  
Deleting a system only temporarily deletes the groups associated  
with that system. When a system is added back into the scan list, the orig-  
37  
 
   
SYSTEM AND GROUP SCAN  
inal group scan list is again active. Systems and groups can be deleted  
from the scan list while listening to a message on the system or group by  
pressing the A/D switch in the normal manner. Scanning resumes shortly  
after the system or group is deleted.  
Scan list programming is not available if the A/D switch is disabled.  
In addition, the group scan list is not programmable if the group scanning  
is disabled on the current system. If an attempt is made to program the  
group scan list on one of these systems, a beep sounds, “GSCN DIS” is  
flashed in the display, and no change occurs in the scan list.  
Saving Scan List  
If the menu mode SCN SAVE parameter is available, you can select  
if scan list changes are saved. If “On” is selected, changes are saved as  
they are made and the scan list is the same when power is turned on. If  
“Off” is selected, they are no longer saved. Therefore, to store a list,  
select “On”, program the list, then select “Off”. Then when power is  
turned on, the scan list returns to the state that existed when “Off” was  
selected.  
If the menu SCN SAVE parameter is not selectable, the scan list save  
mode is fixed by programming. If “On” is programmed, all changes are  
saved and no change occurs in the scan lists when power is cycled. If  
“Off” is programmed, they are not saved and the scan list reverts to the  
default status when power is cycled.  
Scan Delay and Continue Timers  
When a message is received or transmitted while scanning, there is a  
short delay before scanning resumes. The delay after receiving a call  
prevents another message from being received before a response can be  
made. Likewise, the delay after transmitting a call ensures that you hear a  
response to your call instead of another message occurring on some other  
system or group. Note that scanning does not resume if it has been  
disabled, such as by taking the microphone off-hook.  
38  
 
 
SYSTEM AND GROUP SCAN  
There is also a scan continue timer that may be programmed. This  
timer controls the maximum time that a call is received before scanning  
resumes. Times up to 60 seconds can be programmed. This prevents  
scanning from being delayed for long periods by lengthy calls. If the  
menu SCN CONT parameter is selectable (see page 33), this feature can  
be turned on and off.  
Transmitting In The Scan Mode  
General  
When a message is received in the scan mode, programming deter-  
mines if the selected system/group does not change or changes perma-  
nently or temporarily to that of the call. This then affects the system/  
group on which a response to the message occurs and also the system/  
group that is selected when the scan mode is exited by pressing the  
SCAN switch. The three programmable configurations are as follows:  
Last Selected - Transmissions always occur on the system/group that  
was last selected by the Select switch. Therefore, the display may not  
indicate the system/group on which a response will occur. To respond to a  
call not on the selected system/group, one of the following methods can  
be used:  
Select the system/group of the call manually using the Select switch.  
Before scanning resumes, exit the scan mode by pressing the SCAN  
switch. The system/group of the call then becomes the selected system/  
group and it is not necessary to change it manually.  
Last Received - The selected system/group changes to the system/group  
of a call. Therefore, you can always respond to a call without having to  
manually change the system/group. To return to the previously selected  
system/group, manually select it using the Select switch.  
Temporary Last Received - The system/group changes to the system/  
group of a call for only the duration of the scan delay period (see  
page 38.) Then when the delay expires and scanning resumes (if it is not  
39  
 
 
MULTI-NET, LTR, AND CONVENTIONAL MODES  
disabled), the selected system/group is again displayed. Therefore, you  
can respond to a call without changing the selected system/group as long  
as you do so before scanning resumes.  
Fixed System/Group Transmit in Scan  
Each bank can be programmed so that transmissions in the scan  
mode that are made while scanning is occurring are on a preprogrammed  
system/group. Note that scanning must be occurring (scrolling underline  
displayed) when the transmitter is keyed. Since taking the microphone  
off-hook normally disables scanning (unless off-hook detection is  
disabled), the transmitter usually must be keyed with the microphone on-  
hook.  
If a transmission occurs under these conditions, the selected system/  
group also changes. If the transmitter is keyed with scanning halted, the  
programming described in the preceding section takes precedence.  
MULTI-NET, LTR, AND  
CONVENTIONAL MODES  
General  
Each selectable system can be programmed for Multi-Net, LTR, or  
conventional operation by your system operator. The type or types of  
operation that are programmed in your transceiver are determined by the  
type of radio equipment being used in your radio system. The differences  
in operation are described in the following information and elsewhere in  
this manual as required.  
Multi-Net and LTR Operation  
The Multi-Net mode provides the most operating features. Features  
available only in the Multi-Net mode include roaming (auto-registration),  
status messages, and special calls. The two types of calls that can be  
placed with Multi-Net operation are Standard and Special. Special calls  
40  
 
 
MULTI-NET, LTR, AND CONVENTIONAL MODES  
include telephone, unique ID, and directed group. Multi-Net features are  
described starting on page 43.  
LTR operation is similar to Multi-Net operation. The main differ-  
ence is that the preceding features are not available. The two types of  
calls that can be placed with LTR operation are Standard and Telephone.  
LTR features are described starting on page 48.  
Both the Multi-Net and LTR modes provide automatic channel  
selection (trunking) and monitoring before transmitting. In addition,  
special tones and display messages indicate busy and out-of-range condi-  
tions. Selecting a system selects a collection of groups and other informa-  
tion such as fixed priority receive ID codes. Selecting a group selects a  
transmit and receive ID code and other information which controls the  
mobile or mobiles being called and what calls are received.  
Conventional Operation  
In the conventional mode, selecting a system selects a collection of  
channels and other information unique to those channels. Selecting a  
group selects the specific channel and also squelch coding (if any) used  
on that channel. Conventional features are described starting on page 50.  
There are no tones or messages to indicate busy or out-of-range  
conditions in this mode. A busy channel (group) is detected manually or  
automatically as described in the following information. An out-of-range  
condition cannot be detected automatically but may exist if you cannot  
get a response to any of your messages. Refer to “Operation At Extended  
Range” on page 61 for more information.  
To properly receive calls in the conventional mode, the squelch  
control must be set as described in page 18. If this control is not set prop-  
erly, weak messages could be missed or noise could be heard when no  
message is present. In the Multi-Net and LTR modes, the squelch level is  
fixed and setting this control has no affect.  
41  
 
 
MULTI-NET, LTR, AND CONVENTIONAL MODES  
Monitoring Conventional Channels Before Transmitting  
Regulations require that the channel be monitored before transmit-  
ting to make sure that it is not being used by someone else. If you were to  
transmit when someone else is talking, you would probably disrupt their  
conversation. As previously stated, monitoring is performed automati-  
cally in the Multi-Net and LTR modes. In the conventional mode, it must  
be performed automatically or manually as follows.  
Automatic Channel Monitoring  
If the selected group is programmed for the Transmit Disable On  
Busy feature, monitoring is performed automatically. Refer to page 51 for  
more information on this feature.  
Manual Channel Monitoring  
If the Transmit Disable On Busy feature is not used, monitoring  
must be performed manually as follows:  
Busy Indicator - With scanning disabled and the squelch control  
adjusted as described on page 18, note if the indicator on the front panel  
is green. If it is, a signal has been detected on the selected system  
(channel) and you should not transmit a message until it turns off.  
Monitor Mode - There may be times when the busy indication is on even  
though no one is using the channel. Monitoring should then be performed  
using the monitor mode. This mode is enabled by taking the microphone  
off-hook (unless off-hook detection has been disabled by programming).  
The monitor mode temporarily disables Call Guard squelch (see descrip-  
tion on page 52) and scanning so that all messages on the channel are  
heard. The monitor mode is indicated by  
in the display as shown in the  
following illustration. The monitor mode can also be enabled by the MON  
or CG option switch if it is programmed. Refer to the monitor mode  
description on page 50 for more information.  
42  
 
 
MULTI-NET FEATURES  
Monitor Mode  
Selected  
MULTI-NET FEATURES  
Standard and Special Calls  
Standard calls are between two mobiles or between a mobile and a  
control station, and special calls include telephone, unique ID, and  
directed group. Standard calls are described starting on page 19, tele-  
phone calls starting on page 21, and unique ID and directed group calls  
starting on page 23.  
Busy Queuing (Multi-Net)  
The Multi-Net Busy Queuing feature places the call in a queue if a  
busy condition occurs when the PTT switch is pressed. Then when the  
radio system is no longer busy, a tone sounds and the call can be placed if  
desired. This feature is enabled on individual Multi-Net systems by  
dealer programming, and it is then available with all types of calls on that  
system. This feature operates as follows:  
If a busy condition exists, the busy tone sounds and the Busy  
Queuing mode is entered automatically when the PTT switch is released.  
The busy tone then stops sounding and “IN QUEUE” is displayed as  
shown in the following illustration. When the transceiver successfully  
accesses the system, either a beep or dial tone sounds. The beep sounds  
43  
 
   
MULTI-NET FEATURES  
with all calls except telephone, and the dial tone sounds with telephone  
calls. The call can then be placed in the normal manner.  
When in the queue mode, calls are received normally. A response  
can be made to a call and Busy Queuing resumes shortly after the call is  
finished (if it was not on the selected group). If group scanning is  
enabled, it continues. However, system scanning is temporarily disabled,  
so calls are not received on other systems.  
If a call is not placed soon after this tone sounds, the queue mode is  
automatically exited and normal operation resumes. The queue mode is  
also exited if any of the following occur:  
Pressing the PTT switch (except when responding to a call as  
described above)  
A call is received on the selected group  
Pressing any front panel switch  
Turning power off and then on  
Roaming (Auto-Registration)  
Several Multi-Net sites can be linked together to provide wide-area  
coverage. Mobiles can then roam from site to site and the radio system  
tracks their location and calls are automatically routed to the correct site.  
Telephone and unique ID calls are always routed to other sites, and stan-  
dard calls may be routed.  
To utilize the Roaming feature, all of the following requirements  
must be met:  
The scan mode must be selected by the SCAN switch.  
The transceiver must be programmed for Roaming and it must be  
available in your radio system.  
If the menu mode “ROAMING” function is available, “On” must be  
selected.  
Roaming functions as follows: When you move out of range of the  
current site, the transceiver begins searching for the sites programmed in  
44  
 
 
MULTI-NET FEATURES  
other selectable systems. While searching is occurring, “ROAMING” is  
indicated on the lower line of the display as shown below. When a new  
site is located, this message is no longer displayed, and the system and  
group of the new site is displayed.  
The new system is the first higher system with a different site that  
could be accessed (wrap-around occurs after the highest system is  
accessed). The new group is either the same group that was displayed  
before roaming occurred or the last selected group of that system  
(programming determines which is selected).  
Transmitting Status Messages  
Preprogrammed status messages can be transmitted whenever the  
transmitter is keyed with a Multi-Net system selected. If this feature is  
available, the STATUS menu parameter (see page 33) is programmed to  
allow the desired message to be selected.  
Selecting the STATUS menu parameter enables the status message  
select mode. This mode is indicated by “STATUS” on the top line of the  
display and the bottom line indicates the currently selected status  
message (see following illustration).  
Status Select Mode  
Selected Status  
Message  
To change the current message, press the Select switch. When “NO  
STAT” is selected, no message is transmitted. To select the current  
45  
 
 
MULTI-NET FEATURES  
message and exit this mode, press the FCN option switch again. This also  
occurs automatically 2 seconds after a change is made or 8 seconds after  
no changes are made.  
Up to eight status conditions such as “AT SITE”, “LEAVING”, and  
“LOADING” may be preprogrammed by your system operator. The  
selected status condition along with the unique ID of your transceiver is  
then displayed on the dispatcher’s console whenever the transmitter is  
keyed.  
Caller Identification  
The caller identification feature displays the four-digit unique ID of  
the calling mobile. It is displayed on the bottom line as “UI XXXX”  
alternately with the group alpha tag.  
This feature can be turned on and off by the CALL ID menu param-  
eter (see page 33). If this menu parameter is not available, the caller ID  
feature is fixed in the on or off mode by programming. This feature is  
also programmed on individual groups by your system operator. If it is  
disabled on a group, the unique ID code is not displayed even if this  
feature is enabled.  
Calls on Priority and Block ID Codes  
Two fixed priority and a block of receive ID codes can be  
programmed. These codes are in addition to the receive and transmit ID  
code selected by the group select function. Calls on the fixed priority and  
block ID codes are received regardless of which group is selected or  
group scanning. All that is required is that the system programmed with  
those codes be selected or scanned.  
Calls on the fixed priority ID codes have a higher priority than calls  
being received on other ID codes. If a call with a higher priority is  
detected while receiving a call, the current call is immediately dropped  
and the higher priority call received. Telephone calls are not interrupted  
by priority calls.  
46  
 
   
MULTI-NET FEATURES  
If a call is received on one of the fixed priority ID codes, either  
“PRIORTY1” or “PRIORTY2” is displayed on the bottom line. The  
selectable groups are then checked to see if any have the same ID code. If  
a match is found, the transceiver changes to that group. If no match is  
found, the group does not change and a response cannot be made on that  
ID code. The “Transmitting in the Scan Mode” programming described  
on page 39 determines if a change is temporary or permanent.  
When block ID codes are used, calls are detected on entire blocks of  
ID codes. When a call is received on a block ID code, “BLK CALL” is  
displayed and the selected group does not change.  
Transmit Inhibit  
The Transmit Inhibit feature prevents the transmitter from keying if  
the mobile you are calling is busy with another call. When the transmitter  
is disabled by this feature, the intercept tone sounds and “TX INHIB” is  
displayed (see following illustration). To make another call attempt, the  
PTT switch must be released and pressed again. However, you may  
want to wait a few seconds before making another attempt so that the  
other call can finish.  
One use of this feature is to prevent the accidental interruption of a  
call in progress. This could happen when the other party unkeys or if a  
higher priority ID is transmitted. It may also be used to provide an indica-  
tion that the mobile you are calling is busy with another call. A similar  
Transmit Disable On Busy feature is available on conventional systems  
(see page 51).  
47  
 
 
LTR FEATURES  
LTR FEATURES  
Standard and Telephone Calls  
Standard calls are between two mobiles or between a mobile and a  
control station. Telephone calls allow you to place and receive calls over  
the public telephone system using your transceiver. Standard calls are  
described starting on page 19, and telephone calls are described starting  
Busy Queuing (LTR)  
The LTR busy queuing feature places a telephone call in a queue if  
the radio system is busy when it is placed. Then when the system  
becomes available, the call is automatically placed. Standard (mobile-to-  
mobile) calls are not queued by this feature. If queuing is programmed  
and a busy condition is encountered, the queue mode is entered automati-  
cally when the PTT switch is released. The queue mode is indicated by  
“IN QUEUE” on the bottom line of the display as shown below.  
When the radio system becomes available, it is automatically  
accessed. A beep then sounds and a dial tone is heard. The call can then  
be placed if desired. The queue mode is exited before the call is placed if  
any of the following occur (exit is indicated when “IN QUEUE” is no  
longer displayed).  
The PTT switch is pressed  
Any call is received  
Any front panel option switch is pressed  
Power is turned off  
Calls are received normally in the queue mode. However, receiving  
any call causes the mode to be exited as indicated above. Group scanning  
48  
 
   
LTR FEATURES  
remains enabled while in the queue mode, but system scanning is tempo-  
rarily disabled. This feature is enabled on individual LTR systems by  
dealer programming, and it is then available with all telephone calls on  
that system.  
System Search  
If an out-of-range condition exists when attempting an LTR tele-  
phone call, the system search feature can be used to automatically search  
for a system within range. If enabled, the system search mode is automat-  
ically entered when the PTT switch is released. This mode is indicated by  
a short tone and “SYS SRCH” on the bottom line of the display (see  
following illustration).  
The transceiver then attempts to access, in succession, other systems  
that have a group programmed for telephone calls. As each system is  
accessed, a beep sounds. If a system is accessed, the new system/group is  
selected and a dial tone sounds. The telephone call must then be placed  
within a few seconds or normal operation resumes. If no system could be  
accessed, the intercept tone sounds, “NO PHONE” is displayed, the  
system/group does not change, and the feature deactivates.  
This mode can also be canceled at any time by pressing any front  
panel option switch. If the menu mode SYS SRCH parameter is select-  
able (see page 32), this feature can be turned on and off. Otherwise, it is  
either enabled or disabled on all LTR systems by programming.  
Transpond  
The transpond feature indicates if the mobile being called is in  
service. To be available, it must be programmed in the transceiver you are  
calling. Each selectable LTR group can be programmed for this feature. If  
49  
 
 
CONVENTIONAL FEATURES  
a call is received on one of these groups, the transceiver automatically  
transmits a response. This causes the transceiver placing the call to  
briefly unsquelch and the call indicator to turn on (if it is programmed on  
the selected group).  
Priority and Block ID Codes  
LTR priority and block ID codes function nearly the same with both  
LTR and Multi-Net operation. Therefore, refer to the Multi-Net descrip-  
Transmit Inhibit  
The Transmit Inhibit function operates the same with both LTR and  
Multi-Net operation. Therefore, refer to the Multi-Net description on  
CONVENTIONAL FEATURES  
Monitor Mode  
The monitor mode is used to monitor a channel before transmitting.  
When this mode is selected, it temporarily disables Call Guard squelch or  
other squelch control techniques and also scanning so that all messages  
occurring on the selected group (channel) are heard. The monitor mode is  
enabled by taking the microphone off-hook (unless off-hook detection is  
disabled by programming) or pressing the MON option switch. The  
monitor mode is indicated by  
in the display.  
A conventional system must be selected to enable monitoring. If the  
microphone is taken off-hook with a Multi-Net or LTR system selected,  
scanning halts (unless off-hook detection is disabled) but monitoring is  
not selected. The MON option switch is not detected when scanning is  
enabled, and if it is pressed with a Multi-Net or LTR system selected,  
NOT CONV is displayed and monitoring is not selected. This switch  
must be pressed again to disable the monitor mode.  
50  
 
   
CONVENTIONAL FEATURES  
A CG (Call Guard disable) option switch may also be programmed.  
This switch disables both receive and transmit squelch control on the  
selected group only (the monitor mode disables only receive squelch  
control). When squelch control is disabled by the CG switch, “CG OFF”  
is momentarily displayed. To re-enable squelch control and momentarily  
display “CG ON”, press the CG switch again, select another system/  
group, or cycle transceiver power.  
If the Transmit Disable On Busy feature is used (see description  
which follows), monitoring is performed automatically and the monitor  
mode may not need to be used. Refer to “Monitoring Conventional Chan-  
Transmit Disable On Busy  
The Transmit Disable On Busy feature automatically disables the  
transmitter if the selected group (channel) is busy when the PTT switch is  
pressed. When the transmitter is disabled by this feature, the busy tone  
sounds briefly and “DSBL BSY” is indicated on the lower line of the  
display. The monitor mode (see preceding section) is enabled while the  
PTT switch is pressed so that activity on the channel can be monitored.  
However, it is not possible to access a channel by holding down the PTT  
switch (it must be released to make another attempt).  
Occasionally, a busy condition may be detected even though no one  
is talking. To key the transmitter in this case, release the PTT switch and  
then immediately press it again. There is also a programmable option  
with this feature to allow transmitting with a busy channel if the correct  
Call Guard signal is detected. The Transmit Disable On Busy feature is  
enabled or disabled on each conventional group by dealer programming.  
Receive-Only Groups  
Conventional groups can be programmed for monitoring only (trans-  
mitting is disabled). If the PTT switch is pressed with one of these groups  
selected, the intercept tone sounds and “TX DSBL” is displayed.  
51  
 
   
CONVENTIONAL FEATURES  
Talk-Around  
Normally, all transmissions go through a repeater. Therefore, if you  
are out of radio range of the repeater, you cannot talk to anyone, even if  
you are only a short distance away from the mobile you are calling. To  
allow communication if this occurs, the talk-around feature can be used  
to enable direct mobile-to-mobile communication without going through  
a repeater.  
Each selectable group can be programmed for talk-around. It is then  
automatically selected when the group is selected. There is no special  
talk-around indicator although the group alpha tag on the lower line of  
the display may be used to indicate this feature.  
Talk-around can also be selected by the TALKARND menu param-  
eter (see page 33) or T/A option switch. When talk-around is selected by  
this switch, “TA ON” is flashed on the lower line of the display. Then  
when it is disabled, “TA OFF” is flashed. Changing the selected system  
or group, enabling scanning, or turning power off causes talk-around to  
revert to the default condition programmed for the selected group.  
Conventional systems can be programmed so that talk-around  
cannot be selected. If an attempt is then made to enable talk-around with  
the switch, “NO TALK” is flashed on the lower line of the display.  
Groups may also be programmed so that talk-around cannot be turned  
off. If the option switch is then pressed, neither “TA OFF” nor “TA ON”  
is displayed. If the menu mode is used in these cases, the current mode  
cannot be changed.  
Call Guard Squelch  
The Call Guard squelch feature eliminates distracting messages  
intended for others using the channel. This is done by using a subaudible  
tone or digital code to control the squelch. This tone or code is unique to  
a user or a group on that channel. It is transmitted with the voice signal  
but is not heard because it is in the subaudible range and attenuated by a  
filter. Call Guard squelch can be programmed on each conventional  
group. LTR operation uses ID codes to perform a similar function.  
52  
 
   
CONVENTIONAL FEATURES  
Priority Group Sampling  
The priority group sampling feature ensures that messages on  
priority conventional groups are not missed while listening to a message  
on a non-priority conventional group. A fixed first and second priority  
group can be designated by programming or either priority group can be  
the selected group. When a first priority group is selected,  
displayed, and when a second priority group is selected,  
is  
is displayed  
(see following illustration). When scanning, this symbol is displayed only  
while a call is being received on the particular priority group.  
When a message is detected on a first priority group while listening  
to a non-priority message, a tone sounds, “PRIORTY1” is flashed on the  
lower line of the display, and the transceiver changes to that system/group  
to receive the message. Likewise, if a message is received on a second  
priority group, “PRIORTY2” is displayed. When the priority message is  
complete, the transceiver returns to the previous system/group. If a  
message is still present, it is received.  
When a priority system/group is sampled while listening to a  
message on some other system/group, a series of “ticks” may be heard.  
These ticks are brief interruptions of the audio signal that occur when  
sampling takes place.  
If the menu mode PRIORITY parameter (see page 33) or the PRI  
option switch is available, priority sampling can be turned on and off.  
When it is enabled by the switch, “PRI ON” is flashed, and if it is  
disabled, “PRI OFF” is flashed. If this menu parameter or switch is not  
available, priority sampling is either enabled or disabled by  
programming.  
53  
 
 
MISCELLANEOUS  
NOTE: Priority sampling occurs only on conventional systems and only  
when scanning is enabled by the SCAN switch. It does not occur when  
listening to a Multi-Net or LTR call or when transmitting.  
MISCELLANEOUS  
Supervisory Tones  
The following tones are heard at various times when operating this  
transceiver. Some or all of these tones can be disabled by the TONES  
menu parameter or programming. Refer to “Tone Select” on page 32 for  
more information.  
Busy Tone - This tone is similar to the standard telephone busy tone, and  
it indicates that the radio system is currently busy. It sounds with all  
Multi-Net and LTR calls, but not conventional calls. Repeated access  
attempts are made while the PTT switch is pressed with this tone  
sounding. Therefore, the PTT switch does not need to be released to  
access the system. The display indicates “BUSY” while this tone is  
sounding.  
Intercept Tone - This is a siren-like tone (alternating high and low tones)  
which indicates the following out-of-range and error conditions:  
Out-Of-Range - If this tone sounds shortly after pressing the PTT  
switch and “OUT RNGE” is displayed, the transceiver was unable to  
contact a repeater. The usual cause for this is an out-of-range condition  
sounds, no more access attempts are made until the PTT switch is  
released and then pressed again. This condition is not indicated with  
conventional operation.  
Time-Out Timer - If this tone sounds after the transmitter has been  
keyed for an extended period and “TIMEOUT” is displayed, the trans-  
mitter has been disabled by the Time-Out Timer feature (see page 31).  
This tone sounds with Multi-Net, LTR, and conventional operation. Ten  
54  
 
   
MISCELLANEOUS  
seconds before this tone sounds, a single beep sounds to indicate that  
time-out will soon occur.  
Transmit Inhibit - If this tone sounds as soon as the PTT switch is  
pressed with a Multi-Net or LTR system selected and “TX INHIB” is  
displayed, the transmitter has been disabled by the Transmit Inhibit  
feature (see page 47).  
Transmit Disable On Busy - If this tone sounds as soon as the push-to-  
talk switch is pressed with a conventional system selected and “DSBL  
BSY” is displayed, the channel is busy and the transmitter was disabled  
by the Transmit Disable On Busy feature (see page 51).  
Receive-Only Channel - If this tone sounds as soon as the push-to-talk  
switch is pressed with a conventional system selected and “TX DSBL”  
is displayed, the channel is receive-only (see page 51).  
Tx While Receiving Call - If the push-to-talk switch is pressed while  
receiving a Multi-Net or LTR call, this tone sounds and “DSBL BSY”  
is displayed.  
Proceed (Clear-To-Talk) Tone - This is a short tone which sounds after  
the push-to-talk switch is pressed to indicate when talking can begin (see  
page 30). A loud (two-pitch) tone may also be programmed.  
Key Press Tone - This is a short tone that indicates when an option  
switch is pressed (all modes).  
Priority Call Tone - This is a short tone that sounds when a call is received  
on a conventional first or second priority channel (see page 53).  
Wrap-Around Tone - This is a two-pitch tone that indicates that the  
highest or lowest channel was displayed and that wrap-around has  
occurred.  
Error Tone - This is a two-pitch tone that indicates that an error condition  
has occurred.  
55  
 
MISCELLANEOUS  
Multi-Net Telephone Call Tones  
The following tones are generated by the Multi-Net equipment and  
are heard when making a telephone, unique ID, or directed group special  
call on a Multi-Net system.  
Confirmation Tone - This is a short tone that sounds when the number  
just dialed has been accepted by the system.  
Call Proceed Tone - With Multi-Net directed group calls (see page 23),  
ringing does not occur after the number is dialed. Instead, another short  
tone sounds after the confirmation tone to indicate that the audio path is  
complete and speaking can begin.  
End Call Tone - Three beeps which indicate that the end of the call has  
been detected by the system.  
Proceed Dialing Tone - When placing a landside-to-mobile telephone  
call (see page 25), the landside caller may enter a special number which  
specifies the mobile being called. This tone indicates when that number  
should be dialed.  
LTR Telephone Call Tones  
The following tones are generated by LTR interconnect equipment  
and are heard when making LTR telephone calls. Therefore, if some other  
type of interconnect equipment is being used, these tones may vary.  
Reorder Tone - Three beeps which indicate that the call has been termi-  
nated by the system.  
Return Time Warning Tone - Two beeps which warn that you have not  
transmitted for an extended period. If you do not transmit within 5  
seconds, the call is automatically terminated by the system. The time  
between transmissions is one of the parameters used by the system to  
detect the end of a call when the # character is not sent.  
56  
 
MISCELLANEOUS  
Conversation Time-Out Tone - Calls are limited to a certain length by  
the system. Thirty seconds before this time is reached, a “tick” begins  
sounding each second. When the 30-second time expires, the call is auto-  
matically terminated by the system.  
Turn-Around Tone - This is a single beep which may be used to indicate  
to the landside party when to respond to your transmission. It sounds  
when you release the PTT switch, and you may partially hear this tone.  
Proceed Tone - This tone consists of two beeps and it tells the landside  
caller when to enter the five-digit number specifying the mobile being  
called. Dialing of this number must be started within 5 seconds of hearing  
this tone, and a tone-type telephone must be used.  
Display Messages  
The following messages appear on the upper or lower line of the  
display to indicate various operating modes and error conditions. The  
group alpha tag appears in this area during normal operation.  
ALL CALL - Indicates that a Multi-Net “All Call” special call is being  
received. This is a high-priority call to all mobiles assigned to a site. If  
another call is being received, it is dropped to receive this call.  
BLK CALL - Indicates that the call is being received on a Multi-Net or  
page 46).  
BUSY - Indicates that the Multi-Net or LTR radio system is currently  
busy (see “Busy Tone” on page 54).  
CG ON or OFF - Indicates that Call Guard squelch was just enabled or  
disabled by the CG option switch (see “Monitor Mode” on page 50).  
DSBL BSY - Indicates that the transmitter is disabled by the conven-  
tional Transmit Disable On Busy feature (see page 51). It also indicates  
that the transmitter was keyed while receiving a Multi-Net or LTR call.  
57  
 
MISCELLANEOUS  
EMERGNCY - Indicates that the emergency switch has been pressed  
FCN - Indicates that the function select mode is selected by the FCN  
option switch (see page 28).  
GSCN DIS - Indicates that an attempt was made to delete a group from  
the scan list with group scanning disabled (see “Scan List Programming”  
IN QUEUE - Indicates that the call has been placed in queue by the  
Multi-Net or LTR Busy Queuing feature (see “Busy Queuing” on pages  
43 and 48).  
Model - The last seven digits of the transceiver part number are indicated  
very briefly on the top line of the display when transceiver power is  
turned on. This number indicates such things as frequency band, power  
output, and tier of the transceiver. The eighth digit is reserved and always  
“0”.  
NO MULT - Indicates that an attempt was made to enable a Multi-Net  
feature on an LTR or conventional system.  
NO POWER - Indicates that the transmitter temperature or supply  
voltage is excessive and that the transmitter has been automatically shut  
down. Release the PTT switch and allow the transmitter to cool. If the  
problem persists, contact your system operator for service.  
NO PHONE - Indicates that the LTR system search mode could not  
locate any systems programmed for telephone calls (see page 49).  
NO TALK - Indicates that talk-around has been disabled on the selected  
conventional system by programming (see “Talk-Around” on page 52).  
NOT CONV - Indicates that an attempt was made to enable a conven-  
tional mode feature on a Multi-Net or LTR system.  
OUT-LOCK - Indicates that the synthesizer is unlocked. Refer to  
58  
 
MISCELLANEOUS  
OUT-RNGE - Indicates that the transceiver was unable to contact a  
repeater. Once this indication appears, no more access attempts are made  
until the PTT switch is released and then pressed again. Refer to “Opera-  
PRI ON or OFF - Indicates that priority sampling was just enabled or  
disabled by the PRI option switch (see page 53).  
PRIORTY1 or 2 - Indicates that a Multi-Net, LTR, or conventional call  
is being received on one of the priority ID codes or groups (see pages 46  
and 53).  
PROG ERR - Indicates an EEPROM read error. Refer to “Transceiver  
Service” on page 62 for more information.  
ROAMING - Indicates that the transceiver is in the process of regis-  
tering on another system (see “Roaming (Auto-Registration)” on  
page 44).  
SQUELCH - Indicates that the conventional squelch adjust mode is  
SYS SRCH - Indicates that the LTR System Search mode has been  
enabled (see page 49).  
TA ON or OFF - Indicates that talk-around was just enabled or disabled  
by the TA option switch (see “Talk-Around” on page 52).  
TIMEOUT - Indicates that the transmitter has been disabled by the  
Time-Out Timer (see page 31).  
TX DSBL - Indicates that the selected conventional system is  
programmed for monitoring only (see “Receive-Only Groups” on  
page 51).  
TX INHIB - Indicates that the transmitter has been disabled by the  
Transmit Inhibit feature (see page 47).  
UI xxxx - This is the unique ID of the mobile transmitting the message  
59  
 
MISCELLANEOUS  
Menu Mode Messages  
The following messages are displayed in the menu mode that is  
described starting on page 32. “ON” is displayed to indicate enabled or  
yes, and “OFF” is displayed to indicate disabled or no.  
BCKLHGT - Backlight control  
BRIGHT  
DIM  
OFF  
BANK SEL - Bank select  
Bank alpha tag  
CALL ID - Display unique ID  
ON or OFF  
ENCRYPT - Encryption on-off  
ON or OFF  
HRN ALRT - Horn alert on-off  
ON or OFF  
OPTION - Option on-off  
ON or OFF  
PRIORITY - Conventional priority group sampling  
ON or OFF  
ROAMING - Roaming (auto-registration) on-off  
ON or OFF  
SCN CONT - Scan continue on-off  
ON or OFF  
SCN SAVE - Scan list save  
ON = save, OFF = not saved  
SCN SEL - Single/multiple site scan select  
SGL SITE  
MLT SITE  
SCN TYPE - Selects type of scanning  
SYS-GRP - Both system and group  
GRP ONLY - Group scanning only  
OFF - All scanning disabled  
S/G DISPL - System/group display mode  
ALPHATAG  
NUMERIC  
60  
 
 
MISCELLANEOUS  
STATUS - Status message select  
NO STATUS - No status message transmitted  
Programmed status messages  
STEALTH - Stealth mode select  
ON or OFF  
SYS SRCH - LTR system search  
ON or OFF  
TALKARND - Conventional talk-around on-off  
ON or OFF  
TONES - Beep tones select  
SILENT - All tones disabled  
KEY BEEP - Only Select switch and key press tones sound  
ALERT - All tones sound except preceding Key Beeps sound  
ALL TONE - All the preceding tones sound  
System Operator Programming  
As noted several times in this manual, programming determines the  
availability and specific operation of many features. This refers to the  
programming performed by your system operator when the radio was set  
up, not to any programming that you can perform. If a feature is not  
controlled by a front panel option switch, it is fixed in the mode set by  
programming or not available. If you require additional information on  
the operation of a feature, contact your system operator.  
Speaking Into Microphone  
For best results, hold the microphone about 1-2 inches from your  
mouth and speak at a normal conversational level. Do not shout since it  
distorts your voice and does not increase range. Make sure that the PTT  
(push-to-talk) switch is pressed before you begin to speak and released as  
soon as the message is complete. If the proceed tone is used, wait for that  
tone to sound before speaking (see description on page 30).  
Operation At Extended Range  
When approaching the limits of radio range, the other party may not  
be able to hear your transmissions and there may be an increase in back-  
61  
 
 
MISCELLANEOUS  
ground noise when messages are received. You may still be out of range  
even though you can hear a message. The reason for this is that the signal  
you are receiving is usually transmitted at a higher power level than the  
one transmitted by your transceiver. Communication may be improved by  
moving to higher ground or away from shielding objects such as tall  
buildings or hills.  
Preventing Battery Discharge  
In the standby mode (power on, not transmitting), transceiver power  
consumption is relatively low. Therefore, you can probably leave the  
transceiver on for one or two days without operating the vehicle and the  
battery should not become seriously discharged. However, if the outdoor  
temperature is low enough to significantly decrease battery capacity, the  
transceiver should be turned off when not in use.  
Since power consumption is significantly higher when transmitting,  
it is good practice to have the vehicle running while transmitting. This  
ensures that optimum power is being delivered to the transceiver and that  
the battery does not become discharged.  
Licensing  
A government license is usually required to operate this transceiver  
on the air. Your system operator will normally handle the licensing  
requirements.  
Transceiver Service  
If your transceiver is not operating properly, “OUT-LOCK” or  
“PROG ERR” may be displayed. To attempt to clear this condition, turn  
power off and then on again to reset the control logic. Another indication  
that could be displayed is “NO POWER”. This indicates that transmitter  
temperature or supply voltage may be excessive. Release the PTT switch  
and allow the transceiver to cool, and make sure that the vehicle battery  
voltage is within the normal range.  
62  
 
   
MISCELLANEOUS  
Also make sure that the controls are properly set and that the power,  
external speaker (if used), and accessory (if used), cables are securely  
plugged into the back of the transceiver. If the transceiver still does not  
operate properly, return it to your system operator for service.  
NOTE: There are no user-serviceable components in the transceiver.  
Altering internal adjustments can cause illegal emissions, void the  
warranty, and result in improper operation that can seriously damage the  
transceiver.  
63  
 

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