Icom IC-F5020 Series User manual

INSTRUCTION MANUAL
VHF MOBILE TRANSCEIVERS
iF5020
Series
UHF MOBILE TRANSCEIVERS
iF6020
Series

i
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incor-
porated (Japan) in the United States, the United Kingdom, Germany, France,
Spain, Russia and/or other countries.
All other products or brands are registered trademarks or trademarks of their
respective holders.
IMPORTANT
READ ALL INSTRUCTIONS carefully and com-
pletely before using the transceiver.
SAVE THIS INSTRUCTION MANUAL — This
instruction manual contains important operating instructions
for the IC-F5021, IC-F5023/H, IC-5026/H, IC-F5028H VHF
MOBILE TRANSCEIVERS and the IC-F6021, F6023/H,
F6028H UHF MOBILE TRANSCEIVERS.
EXPLICIT DEFINITIONS
WORD DEFINITION
RWARNING Personal injury, fire hazard or electric
shock may occur.
CAUTION Equipment damage may occur.
NOTE
If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.
FCC INFORMATION
• FOR CLASS B UNINTENTIONAL RADIATORS:
This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reason-
able protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in ac-
cordance with the instructions, may cause harmful interfer-
ence to radio communications. However, there is no guaran-
tee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to cor-
rect the interference by one or more of the following meas-
ures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and re-
ceiver.
• Connect the equipment into an outlet on a circuit differ-
ent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV techni-
cian for help.

ii
PRECAUTIONS
RWARNING! NEVER connect the transceiver to an AC
outlet. This may pose a fire hazard or result in an electric shock.
RWARNING! NEVER connect the transceiver to a
power source of more than 16 V DC such as a 24 V battery.
This connection will ruin the transceiver.
RWARNING! NEVER cut the DC power cable be-
tween the DC plug and fuse holder. If an incorrect connec-
tion is made after cutting, the transceiver might be damaged.
RWARNING! NEVER place the transceiver where
normal operation of the vehicle may be hindered or where it
could cause bodily injury.
CAUTION! NEVER allow children to touch the trans-
ceiver.
CAUTION! NEVER expose the transceiver to rain,
snow or any liquids.
USE the specified microphone only. Other microphones have
different pin assignments and may damage the transceiver.
DO NOT use or place the transceiver in areas with tem-
peratures below –30°C (–22°F) or above +60°C (+140°F), or
in areas subject to direct sunlight, such as the dashboard.
DO NOT operate the transceiver without running the ve-
hicle’s engine. The vehicle’s battery will quickly run out when
the transceiver transmits while the vehicle’s engine is OFF.
DO NOT place the transceiver in excessively dusty envi-
ronments.
DO NOT place the transceiver against walls. This will ob-
struct heat dissipation.
DO NOT use chemical agents such as benzine or alcohol
when cleaning, as they damage the transceiver surfaces.
BE CAREFUL! The transceiver will become hot when
operating continuously for long periods.
For U.S.A. only
CAUTION! Changes or modifications to this transceiver, not
expressly approved by Icom Inc., could void your authority to
operate this transceiver under FCC regulations.
Icom optional equipment is designed for optimal perform-
ance when used with this transceiver. We are not respon-
sible for the transceiver being damaged or any accident
caused when using non-Icom optional equipment.

iii
TABLE OF CONTENTS
IMPORTANT .......................................................................... i
EXPLICIT DEFINITIONS....................................................... i
FCC INFORMATION ............................................................. i
PRECAUTIONS.................................................................... ii
TABLE OF CONTENTS....................................................... iii
1 PANEL DESCRIPTIONPANEL DESCRIPTION................................................1–6
 ■ Front panel ...................................................................1
 ■ Function display ...........................................................2
 ■ Programmable function keys........................................3
2 BASIC OPERATIONBASIC OPERATION..................................................7–13
 ■ Turning power ON ........................................................7
 ■ Channel selection.........................................................7
 ■ Call procedure..............................................................8
 ■ Receiving and transmitting...........................................8
 ■ User set mode............................................................11
 ■ Scrambler function .....................................................12
 ■ Emergency transmission............................................12
 ■ Stun function ..............................................................12
■Priority A channel selection........................................12
 ■ MDC 1200 system operation......................................13
3 CONNECTION AND MAINTENANCE ....................14–16
 ■ Rear panel connection ...............................................14
 ■ Supplied Accessories.................................................15
 ■ Mounting the transceiver ............................................15
 ■ Antenna......................................................................16
 ■ Fuse replacement ......................................................16
 ■ Cleaning .....................................................................16
 ■ Options.......................................................................16
4 SAFETY TRAINING INFORMATION.............................17

1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
q w
t
SpeakerFunction display (p. 2)
r
e
■Front panel
qAF VOLUME CONTROL KNOB [VOL]
Rotate the knob to adjust the desired audio output level.
• Minimum audio level is pre-set. (p. 11)
wUP/DOWN KEYS [CH Up]/[CH Down]
Push to select an operating channel, etc.
* The desired function can be assigned by your dealer. (p. 3)
e POWER KEY [ ]
Push to turn the power ON and OFF.
• The following functions are available at power ON as options:
- Automatic scan start
- Password prompt
- Set mode
r DEALER-PROGRAMMABLE KEYS
Desired functions can be programmed independently by
your dealer. (p. 3)
t MICROPHONE CONNECTOR
Connect the supplied or optional microphone.
NEVER connect non-specified microphones. The pin
assignments may be different and the transceiver may
be damaged.
DMICROPHONE
The supplied microphone has a PTT switch and a hanger hook.
• The following functions are available when the microphone is on or
off hook (depending on the setting):
- Automatic scan starts when it is on hook.
- Scan is cancelled when it is off hook.
- Scan is paused when it is off hook.
- Automatic priority channel selection is available when it is off
hook.
- Sets to ‘Inaudible’ condition (mute condition) when it is on hook.
- Sets to ‘Audible’ condition (unmute condition) when it is off hook.
1
PANEL DESCRIPTION

■Function display
q TRANSMIT INDICATOR
Appears while transmitting.
w BUSY INDICATOR
Appears while the channel is busy.
e SIGNAL STRENGTH INDICATOR
Indicates relative signal strength level as below.
Weak Receive Signal level Strong
r LOW POWER INDICATOR
Appears when low output power is selected.
tAUDIBLE INDICATOR
 ➥ Appears when the channel is in the ‘Audible’ (unmute)
condition.
 ➥ Appears when the specific 2/5-tone/MDC* code is re-
ceived.
ySCRAMBLER INDICATOR
Appears when the voice scrambler function is activated.
uBELL INDICATOR
Appears/blinks when the specific 2/5-tone/MDC* code is
received, according to the pre-programming.
iSCAN INDICATOR
Blinks during scan.
oALPHANUMERIC DISPLAY
Displays an operating channel number, channel name,
Set mode contents, DTMF code, etc.
* MDC operation only (p. 13)
2
1PANEL DESCRIPTION
q w e r t y u i
o

3
1
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
■Programmable function keys
The following functions can be assigned to [UP], [DOWN],
[P0], [P1], [P2] and [P3] programmable function keys.
Consult your Icom dealer or system operator for details con-
cerning your transceivers programming.
If the programmable function names are bracketed in the fol-
lowing explanations, the specific key is used to activate the
function depends on the programming.
CH UP AND DOWN KEYS
➥Push to select an operating channel.
➥Push to select a transmit code channel after pushing [TX
Code CH Select].
➥Push to select a DTMF channel after pushing [DTMF Au-
todial].
➥Push to select a scan group after pushing and holding
[Scan A Start/Stop]/[Scan B Start/Stop] for 1 sec.
ZONE KEY
Push this key, then select the desired zone using [CH Up]/
[CH Down].
What is “zone”?— Selected channels are assigned to a
zone according to how they are to be used in a group.
For example, ‘Staff A’ and ‘Staff B’ are assigned into a
“Business” zone, and ‘John’ and ‘Cindy’ are assigned into
a “Private” zone.
SCAN A START/STOP KEY
➥Push to start and cancel scanning operation.
• When Power ON Scan function is activated, push to pause the
scanning operation. And the paused scan resumes after the
specified time period has passed.
➥Push and hold this key for 1 sec. to indicate the scan list,
then push [CH Up] or [CH Down] to select the desired list.
SCAN B START/STOP KEY
➥Push to start and cancel scanning operation.
The scan restarts after the specified time period has
passed when the scan (started with this key) is cancelled
by except for this key operation.
➥
Push and hold this key for 1 sec. to indicate the scan list,
then push [CH Up] or [CH Down] to select the desired list.
SCAN ADD/DEL (TAG) KEY
➥Push to add/delete the selected channel to/from the scan
list.
1. Push to indicate the scan group, then push [CH Up] or
[CH Down] to select the desired list.
2. Push to add or delete the channel to/from the selected scan list.
3. Push and hold for 1 sec. to exit the scan list selection mode.
➥Push this key while scan is paused (a signal is detected)
on a channel (except for priority channel), the channel is
cleared from the scan list.
Depending on the setting, the cleared channel is added
to the scan list again after the scan is cancelled.

4
1PANEL DESCRIPTION
PRIO A/B KEYS
➥Push to select Priority A or Priority B channel.
➥Push and hold [Prio A (Rewrite)] or [Prio B (Rewrite)] for
1 sec. to rewrite the operating channel as the Priority A or
Priority B channel.
MR-CH 1/2/3/4 KEYS
Push to select the memory channel 1 to 4 directly.
MONI (AUDI) KEY
➥Push to mute and release the CTCSS (DTCS) or 2-tone
squelch mute. Open any squelch/deactivate any mute
while pushing and holding this key. (LMR operation only)
➥Activates one of (or two of) the following functions on
each channel independently: (PMR operation only)
• Push and hold to unmute the channel (audio is emitted; ‘Au-
dible’ condition).
• Push to mute the channel (sets to ‘Inaudible’ only).
• Push after the communication is finished to send a ‘reset code’.
(5-tone operation only)
NOTE: The un-mute condition (‘Audible’ condition) may
automatically return to the mute condition (‘Inaudible’
condition) after a specified period depending on pro-
gramming.
LOCK KEY
Push and hold to electronically lock all programmable keys
except the following:
[Moni(Audi)], [Lock], [Call] (incl. Call A and Call B), [Emergency],
[Surveillance], [Siren], [Lone Worker] and [OPT 1/2/3].
LONE WORKER KEY
Push to turn the Lone Worker function ON or OFF.
• If the Lone Worker function is activated, Emergency function is au-
tomatically turned ON after the specified time period has passed
with no operation is performed.
HIGH/LOW KEY
Push to select the transmit output power temporarily or per-
manently, depending on the pre-setting.
• Ask your dealer for the output power level for each selection.
C.TONE CH ENT KEY
Push to enter the continuous tone channel selection mode.
Then, push [CH Up]/[CH Down] to change the tone frequency/
code setting. The selected channel remains set as the continu-
ous tone channel until another channel is designated as such.
TALK AROUND KEY
Push to turn the talk around function ON and OFF.
• The talk around function equalizes the transmit frequency to the
receive frequency for transceiver-to-transceiver communication.

5
1
PANEL DESCRIPTION
1
WIDE/NARROW KEY
Push to toggle the IF bandwidth between wide and narrow.
• The wide passband width can be selected from 25.0 or 20.0 kHz
using the CS-F3020/F5020 cloning software. (PMR operation
only) Ask your dealer for details.
DTMF AUTODIAL KEY
➥Push to enter the DTMF channel selection mode. And
then select the desired DTMF channel using [CH Up]/
[CH Down].
➥After selecting the DTMF channel, push again to transmit
the selected DTMF code.
RE-DIAL KEY
Push to transmit the last-transmitted DTMF code.
• TX memories are cleared after turning the transceiver OFF.
CALL KEYS
Push to transmit a 2/5-tone ID code.
• Call transmission is necessary before calling another station
depending on your signalling system.
• [Call A] and/or [Call B] may be available when your system
employs selective ‘Individual/Group’ calls. Ask your dealer which
call is assigned to each key.
EMERGENCY KEY
Push and hold this for specified period to transmit an emer-
gency call.
• The emergency call transmits with beeps; the display does not
change.
• The transceiver can transmit an emergency call with no beep emis-
sion and LCD indication change depending on the pre-setting. Ask
your dealer for details.
• If you want to cancel the emergency call, push and hold the key
again before transmitting the call.
• The emergency call is transmitted one time only or repeatedly until
receiving a control code, depending on the pre-setting.
SURVEILLANCE KEY
Push to turn the surveillance function ON or OFF.
When this function is turned ON, the beep is not emitted and
the LCD backlight does not light when a signal is received or
a key is pushed, etc.
SIREN
Push to emit a siren.
TX CODE ENTER KEY (PMR operation only)
Push to enter the TX code edit mode directly.
Then set the desired digit using [CH Up]/[CH Down]. (p. 10)

6
1PANEL DESCRIPTION
TX CODE CHANNEL SELECT KEY
➥Push to enter the TX code channel selection mode. Then
set the desired channel using [CH Up]/[CH Down]. (p. 9)
➥While in the TX code channel selection mode, push and
hold this key for 1 sec. to enter the TX code edit mode.
Then set the desired digit using [CH Up]/[CH Down].
(p. 10)
TX CODE CHANNEL UP/DOWN KEYS
Push to select a TX code channel directly.
ID-MR SELECT KEY (PMR operation only)
➥Recalls detected ID codes.
• Push this key, then select the ID code using [CH Up]/
[CH Down].
• Up to 5 ID’s are memorized.
➥ Push and hold this key for 1 sec. to erase the selected ID’s.
SCRAMBLER KEY
➥Push to turn the voice scrambler function ON and OFF.
USER SET MODE KEY
➥Push and hold for 1 sec. to enter user set mode.
• During user set mode, push this key to select an item*, and
change the value or condition using [CH Up]/[CH Down].
*Selectable items may differ depending on the pre-setting.
➥ Push and hold this key for 1 sec. again to exit user set mode.
User set mode is also available via the ‘Power ON’ function.
In this case, all set mode items are available. Refer to p. 11
also.
OPT 1/2/3 OUT KEYS
Push to control the output signal level from the optional unit
connector.
OPT 1/2/3 MOMENTARY KEYS
Control the output signal level from the optional unit connec-
tor while pushing and holding this key.
Ext. CH Sel Mode KEY
Push to turn the Ext. CH Select function ON or OFF.
When the function is turned ON, memory channels can be
selected with external input operation only.
When the function is turned OFF, memory channels can be
selected with [CH Up] or [CH Down] operation, and cannot
with external input operation.
• This function is available when the external unit, such as a dim-
mer control is connected to the transceiver with an optional cable,
OPC-1939 (p. 16).
• Ask your dealer for details of external input operation.

7
2
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
■Turning power ON
qPush [ ] to turn the power ON.
wIf the transceiver is programmed for a start up password,
input the digit codes as directed by your dealer.
• The keys as below can be used for password input:
The transceiver detects numbers in the same block as identical.
Therefore “01234” and “56789” are the same.
eWhen the “PASSWORD” indication does not clear after
inputting 4 digits, the input code number may be incorrect.
Turn the power off and start over in this case.
■Channel selection
Several types of channel selections are available. Methods
may differ according to your system set up.
NON-ZONE TYPE:
Push [CH Up] or [CH Down] to select the desired operating
channel, in sequence; or, push one of [MR-CH 1] to [MR-CH 4]
keys to select a channel directly.
ZONE TYPE:
Push [Zone], then push [CH Up] or [CH Down] to select the
desired zone.
AUTOMATIC SCAN TYPE:
Channel setting is not necessary for this type. When turning
power ON, the transceiver automatically starts scanning.
Scanning stops when receiving a call.
KEY
NUMBER 0
5
4
9
3
8
2
7
1
6

8
2BASIC OPERATION
■Call procedure
When your system employs tone signaling (excluding
CTCSS and DTCS), a call procedure may be necessary
prior to voice transmission. The tone signalling employed
may be a selective calling system which allows you to call
specific station(s) only and prevents unwanted stations from
contacting you.
qSelect the desired TX code channel, 2/5-tone code ac-
cording to your System Operator’s instructions.
• This may not be necessary depending on programming.
• Refer to pages 9–10 for selection.
wPush [Call] (assigned to one of the dealer programmable
keys).
eAfter transmitting, the remainder of your communication
can be carried out in the normal fashion.
Selective calling Non-selective calling
■Receiving and transmitting
Receiving:
qPush and hold [ ] for 1 sec. to turn the power ON.
wPush [CH Up] or [CH Down] to select a channel, in se-
quence.
eWhen receiving a call, rotate [VOL] to adjust the audio
output level to a comfortable listening level.
Transmitting:
Wait for the channel to become clear to avoid interference.
qTake the microphone off hook.
• The ‘audible’ condition is selected.
• A priority channel may be selected automatically.
wWait for the channel to become clear.
• The channel is busy when BUSY indicator appears on the LCD.
eWhile pushing and holding [PTT], speak into the micro-
phone at your normal voice level.
rRelease [PTT] to return to receive.
IMPORTANT: To maximize the readability of your signal;
1. Pause briefly after pushing [PTT].
2. Hold the microphone 5 to 10 cm (2 to 4 inches) from
your mouth, then speak into the microphone at a nor-
mal voice level.

9
2
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DTransmitting notes
• Transmit inhibit function
The transceiver has several inhibit functions which restrict
transmission under the following conditions:
- The channel is in mute condition (‘Inaudible’ condition;
“ ” (Audible indicator) does not appear.)
- The channel is busy.
- Un-matched (or matched) CTCSS is received.
(Depending on the pre-setting)
- The selected channel is a ‘receive only’ channel.
• Time-out timer
After continuous transmission for the pre-programmed time
period, the time-out timer is activated, causing the trans-
ceiver to stop transmitting.
• Penalty timer
Once the time-out timer is activated, transmission is further
inhibited for a period determined by the penalty timer.
• PTTID call
The transceiver sends the ID code (5-tone, DTMF or digital
ANI) automatically when [PTT] is pushed (beginning of the
transmission) and/or released (end of transmission) de-
pending on the setting.
PTTID call is also available with the MDC 1200 signal-
ing system. (p. 13)
DTX code channel selection
If the transceiver has [TX Code CH Select] assigned to it,
the indication can be toggled between the operating channel
number (or name) and TX code channel number (or name).
When the TX code channel number (or name) is displayed,
[CH Up] or [CH Down] selects the TX code channel.
USING [TX CODE CH SELECT] KEY:
qPush [TX Code CH Select]— a TX code channel number
(or name) appears.
wPush [CH Up] or [CH Down] to select the desired TX code
channel.
eAfter selecting, push [TX Code CH Select] to set.
• Return to the stand-by mode.
rPush [Call] to transmit the selected TX code.
USING [TX CODE CH UP]/[TX CODE CH DOWN] KEY:
If the transceiver has a [TX Code CH Up] or [TX Code CH
Down] key assignment, the programmed TX code channel
can be selected directly when pushed.

10
2BASIC OPERATION
DTX code number edit (PMR operation only)
If the transceiver has [TX Code CH Select] or [TX Code
Enter] assigned to it, TX code contents can be edited within
the allowable digits.
USING [TX CODE CH SELECT] KEY:
qPush [TX Code CH Select] to enter the TX code channel
selection mode.
• Select the desired operating channel before entering the TX
code channel selection mode if necessary.
wPush [TX Code CH Select] for 1 sec. to enter the TX code
edit mode.
• The digit to be edited blinks.
ePush [TX Code CH Select] to select the desired digit to
be edited.
rPush [CH Up] or [CH Down] to select the desired digit.
tPush [TX Code CH Select] to set. The digit to the right will
blink automatically.
yRepeat rand tto edit all allowable digits.
uAfter editing, push [TX Code CH Select] to set.
• Return to the stand-by mode.
iPush [Call] to transmit.
USING [TX CODE ENTER] KEY:
qPush [TX Code Enter] to enter the TX code edit mode.
• The digit to be edited blinks.
wPush [TX Code Enter] to select the desired digit to be ed-
ited.
ePush [CH Up] or [CH Down] to select the desired digit.
rPush [TX Code Enter] to set. The digit to the right will
blink automatically.
tRepeat eand rto edit all allowable digits.
yAfter editing, push [TX Code Enter] to set.
• Return to the stand-by mode.
uPush [Call] to transmit.
DDTMF transmission
If the transceiver has [DTMF Autodial] assigned to it, the
automatic DTMF transmission function is available. Up to 8
DTMF channels are available.
qPush [DTMF Autodial]— a DTMF channel appears.
wPush [CH Up] or [CH Down] to select the desired DTMF
channel.
ePush [DTMF Autodial] to transmit the DTMF code.

11
2
BASIC OPERATION
2
■User set mode
User set mode can be accessed with ‘Power ON’ function. In
this case, all set mode items are available.
User set mode allows you to set seldom-changed settings
and you can “customize” the transceiver operation to suit
your preferences and operating style.
Entering the user set mode:
qWhile pushing and holding [P1] and [P2], push [ ] to turn
the power ON.
• Turn power OFF in advance.
• Push and hold [P1] and [P2] continuously until “SET MODE”
appears on the display.
[P1] [P2] [ ]
wPush and hold [P0] for 1 sec. to enter user set mode.
[P0]
ePush [P0] several times to select the appropriate item.
Then, push [Up] or [Down] to set the desired level/condi-
tion.
• Available set mode functions are Backlight, Beep, Beep Level,
SQL Level, AF Min Level, Mic Gain, Horn, Battery Voltage,
Signal Moni and Lone Worker.
[P0] [Up]/[Down]
rPush and hold [ ] for 1 sec. to turn power OFF, then ON
again to exit set mode.
[ ]
User set mode is also available using a programmable key.
Please refer to p. 6 [User Set Mode] section for instructions
regarding using the key assigned for user set mode.
[User Set Mode] is allowed for the quick item selection. Set
“Enable” for the often used items with the CS-F3020/F5020
cloning software.

12
2BASIC OPERATION
■Scrambler function
The voice scrambler function provides private communica-
tion between stations. All versions have a built-in frequency
inversion type scrambler, moreover, the optional Rolling or
Non-rolling type can be available.
qPush [Scrambler] to turn the scrambler function ON.
• “ ” (Scrambler indicator) appears.
wPush [Scrambler] again to turn the scrambler function
OFF.
• “ ” disappears.
■Emergency transmission
The emergency call can be performed using [Emergency]. (p. 5)
When [Emergency] is pushed for the specified time period,
the DTMF or 5-tone emergency signal is transmitted once
or repeatedly on the emergency channel depending on the
channel. However, when no emergency channel is specified,
the signal is transmitted on the previously selected channel.
If you want to cancel the emergency call, push and hold the
key again before transmitting the call.
Emergency call is also available with the MDC 1200 signal-
ing system. (p. 13)
■Stun function
When the specified ID, set as a stun ID or kill ID, is received,
the stun function is activated.
When the stun ID is received, the transceiver becomes
unusable. Entering of the password (p. 8) or receiving a
specified ID, set as a revive ID, is necessary to operate the
transceiver again in this case.
When the kill ID is received, the transceiver switches to
the cloning required condition. Cloning the transceiver is
necessary to operate the transceiver again in this case.
Stun function is also available with the MDC 1200 signaling
system. (p. 13)
■Priority A channel selection
When one of the following operations is performed, the
transceiver selects the Priority A channel automatically.
• Turning the power ON
The Priority A channel is selected each time the trans-
ceiver power is turned ON.
• Off hook.
The Priority A channel is selected when the microphone is
took off from its hanger.

13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
■MDC 1200 system operation
The MDC 1200 signaling system enhances your trans-
ceiver’s capabilities. It allows PTT ID*, Emergency signaling,
and receiving Radio Check. Also, the dispatcher can stun
and revive transceivers on the system.
An additional feature of MDC 1200 system found in Icom
transceivers is called aliasing. Each transceiver on the system
has a unique ID number. Aliasing allows the substitution of an
alphanumeric name for this ID number. For transmit, you can
use this alias to select a transceiver to call. For receive, the
alias of the calling station is displayed instead of the ID.
*When [PTT] is pushed and/or released, the transceiver transmits
your own station ID.
DReceiving an Emergency Call
qWhen an emergency call is received;
• Beeps sound.
• The calling station ID (or alias) and “EMG EMG” are displayed
alternately.
w Turn power OFF, change the channel, push [PTT] for re-
plying the call, etc. to stop the beep and display indication.
DTransmitting an Emergency Call
The MDC 1200 system Emergency feature can be accessed
using the [Emergency] key (p. 5). The transceiver will send
an Emergency MDC 1200 system command once or repeat-
edly for a programmed number of times until it receives the
acknowledgement signal.
The emergency call can be transmitted without a beep emis-
sion, and the LCD indication change depends on how emer-
gency is programmed. Ask your dealer for details.
DReceiving a Stun and Revive
The dispatcher can send MDC 1200 system signals that
will stun or revive your transceiver. If a Stun command is
received that matches your station ID, the transceiver will
display “SORRY” (default) and you can not receive or trans-
mit. When a Revive command is received that matches your
station ID, normal operation is restored.
2
BASIC OPERATION

14
e
r
Antenna
Black
Red
12V
Battery
Solder
Crimp
NOTE: Use the terminals as shown
below for the cable connections.
qANTENNA CONNECTOR
Connects to an antenna. Contact
your dealer about antenna selec-
tion and placement.
qw
wEXTERNAL SPEAKER JACK
Connect a 4–8 øexternal speaker.
eMICROPHONE HANGER
Connect the supplied micro-
phone hanger to the vehicle’s
ground for microphone on/off
hook functions. (See p. 1)
rOPTIONAL CABLE (OPC-1939)
t
tDC POWER RECEPTACLE
Connects to a 12 V DC battery.
Pay attention to polarities.
Optional speaker
Connect an external modem,
dimmer control, etc.
NEVER connect to a 24 V
battery. This could damage
the transceiver.
CAUTION: NEVER remove the fuse-
holders from the DC power cable.
(Depending on version, the fuse holder
may not be attached to the black cable.)
■Rear panel connection
3CONNECTION AND MAINTENANCE

15
3
15
■Supplied Accessories
Microphone Microphone hanger
and screw set
Microphone
hanger cable
DC power cable
Flat washers
Spring washers Bracket bolts
Mounting screws
(M5×12)
Self-tapping screws
(M5×20)
Nuts
Function name
stickers*
Used for labelling the programmable function
keys according to their assinged functions.
*
Mounting bracket
■Mounting the transceiver
The universal mounting bracket supplied with your trans-
ceiver allows overhead mounting.
• Mount the transceiver securely with the 4 supplied screws
to a thick surface which can support more than 1.5 kg
(3.3 lb).
Flat washer
Felt*
Spring washer
When using
self-tapping screws
Felt*
*Felts reduce the vibration effects.
CONNECTION AND MAINTENANCE 3
1
2
16
15
14
13
12
11
10
9
8
7
6
5
4

16
3CONNECTION AND MAINTENANCE
■Antenna
A key element in the performance of any communication
systems is an antenna. Contact your dealer for more infor-
mation regarding antennas and how to install them.
■Fuse replacement
A fuse is installed in each fuse holder of the supplied DC
power cable*. If a fuse blows or the transceiver stops func-
tioning, track down the source of the problem if possible, and
then replace the damaged fuse with a new rated one.
*Depending on version, only 1 fuse holder may be attached.
❑Fuse rating: 10 A (for 1 fuse holder)/20 A (for 2 fuse holders)
USE the applicable fuse only.
■Cleaning
If the transceiver becomes dusty or dirty, wipe it clean with a
soft, dry cloth.
AVOID the use of solvents such as benzene or
alcohol, as they may damage the transceiver sur-
faces.
■Options
• OPC-1132A/OPC-347 dc power cable
2 fuse holders are attached. USE the 20 A fuse only.
OPC-1132A: 3 m (9.8 ft)
OPC-347: 7 m (23 ft)
• OPC-1939 acc cable
Allows you to connect to an external terminal.
• HM-152/HM-152T/HM-148G/HM-148T hand microphone
HM-152 : Hand microphone
HM-152T : DTMF microphone
HM-148G : Self ground heavy duty microphone
HM-148T : Self ground heavy duty microphone with 10-keypad
• SM-25 desktop microphone
• SP-5/SP-10/SP-22 external speaker
Input impedance : 4 ø
Max. input power : 5 W
SP-5 : Large speaker for good audio quality.
SP-10 : For all-round mobile operation.
SP-22 : Compact and easy-to-install.
• UT-108R dtmf decoder unit
Provides pager and code squelch capabilities.
• UT-109R/UT-110R scrambler units
Non-rolling type (UT-109R)/Rolling type (UT-110R) voice scrambler
unit provides higher communication security.