Motorola AP73 User Guide

Portable Radios

User Manual

SQL LOW

SIG

ABCD

MODE

OFS

MEM

1
4
7

*

STEPPL

CTCSS

LOW

TX

SIGNAL

23
5
89
0

BATT
SCAN
SAVE

SCAN

N-DEL

3

6

#

AP73 Quick Reference

B

PL

SQL

LOW

STEP

B

PL

C

On / Off and

Volume Knob

Microphone

Speaker

LCD Screen

Keypad

flashing

✰

xxx

✰

xxx

)

is

is

Selector Knob

Antenna Connector

STEP

L

Toggle Light / Enter

and Parameter

Transfer Button

Monitor Button

Push-to-Talk

(PTT) Button

LOW CTCSS

TX

SIGNAL

BATT

+

-

SCAN

SAVE

P

E

D

O

M

S

F

O

3

7

A

#

Basic Operation...

Turning Radio On/Off: RotateOn/Off and Volume Knob clockwise /

anti-clockwise.

Adjusting Volume: PressMonitor Button and adjust On/Off and Vol­ume Knob to comfortable volume level.

Setting High/Low Power Output Level: Press to toggle power lev-
els; ‘LOW’ indicator is on when radio is set for Low Power output level.

Transmitting: Select the desired channel / frequency. Make sure channel
is free then press PTT to talk, release to listen. ‘TX’ indicator lights up.

Locking/Unlocking Radio’ s Function: Press for 2 seconds to lock /
unlock Keypad and Selector Knob. LCD displays when locked.

Changing Squelch Modes: Press to toggle between Carrier

(‘CTCSS’
squelch.

off

), Coded( ‘CTCSS’on ) and Signalling (‘CTCSS’

Setting Squelch Level: Press then rotate Selector Knob clockwise
/ anti-clockwise to increase / decrease squelch level. Press any key to
accept.

Selecting Receive PL/DPL Squelch: Press until
shown. Rotate Selector Knob to the desired active Receive PL/DPL

SIG

A

SQL

B

PL

SQL

code. Press any key to accept.
Selecting Transmit PL/DPL Squelch: Press until

shown. Press to get
active Transmit PL/DPL code. Press any key to accept.

Selecting Mhz/Memory Mode: Press to toggle between Mhz (fre-

SQL

✰

B

PL

xxx

. Rotate Selector Knob to the desired

MODE

quency displayed) and Memory (channel number displayed) mode.

MHz Operation...

Selecting Frequency Step Size: Press until current frequency size
is shown. Rotate Selector Knob to the desired frequency step size then

LOW

C

STEP

press any key to accept.
Selecting Receive Frequency: In Mhz mode, enter desired frequency

(whole or
Selecting TX Offset: Pres

positive offset
user-defined TX frequency

Programming User-Defined TX Frequency: Pres
shown. Enter desired TX frequency (whole or

❖

part) or/and rotate Selector Knob to the required frequency.

(‘+’ displayed),

OFS

s to toggle between

standard negative offset

(“+ -” displayed).

❖

part) or/and rotate Selec-

no offset,standard

(‘-’ displayed) and

OFS

s until ‘+ -’ is

tor Knob to the required frequency then press Toggle Light / Enter and
Parameter Transfer Button.

Memory Mode Operation...

Selecting Memory Channel: In Memory mode, rotate Selector Knob.
Programming Memory Channel: In MHz mode, select the desired fre-

quency, type of offset and offset frequency then press Toggle Light /
Enter and Parameter Transfer Button until
Selector Knob to select the desired memory channel then press Toggle

✰

xxx

is shown. Rotate

Light / Enter and Parameter Transfer Button to accept.
Loading Memory Channel: In Memory mode, rotate Selector Knob to

the desired memory channel then press Toggle Light / Enter and Param­eter Transfer Button to accept.

Scan Operation...

Scanning Frequency Range/Memory Channel : In Mhz/Memory mode,

SCAN

D

press to begin scanning the preprogrammed frequency range/chan-

N-DEL

nel. ‘SCAN’ indicator flashes when scanning is in progress, and lights up
continuously when it is receiving a signal.

Transmitting During Band Scanning: PressPTT when scan is locked at
a frequency.

Deleting Nuisance Channel: With radio locked onto unwanted channel,

SCAN

D

press until you hear two beeps.

N-DEL

✰

DTMF Telephone Interconnect...

Placing a Telephone Call: Press and holdPTT and dial access code (or,

if radio has preprogrammed code, press followed by ). Release
PTT and wait for dial tone. If successful, press and hold PTT, then dial
phone number (or, if radio has preprogrammed phone n umber , press

MEM

MEM

followed by number button that stores phone number). Press PTT to talk,
release to listen. T o hang up , press and holdPTT, then dial deaccess code
(or, if radio has preprogrammed code, press followed by ).

Last Number Redial: Once you have accessed the telephone network,
press and hold PTT, then press followed by (only works with

MEM

MEM

manual entered phone number).
Storing a Phone Number or Access/Deaccess Code: Press and hold

MEM

until LCD displays (with a flashing cursor). Enter a phone
number location (1 to 9), or press / to enter access / deaccess
code. Enter the phone number (up to 12 digits), or access/deaccess code
(up to 8 digits). Press Toggle Light/Enter and Parameter Transfer But-

ton to accept.
Displaying a Stored Number: To vie w stored phone number, press ,

followed by a phone number location (1 to 9). To view access/deaccess
code, press followed by
view the last manually dialled number.

✣

Voice Selective Call (Optional)...

MEM

/ . Press followed by to

MEM

MEM

Receiving a Voice Selective Call:When radio decodes a Voice Selective
Call, LCD indicates the type of SelCall message being received:
(Individual Call),

, (Group Call), or (All Call).

Sending a Voice Selective Call:Press and holdPTT , then dial the required
ID. ReleasePTT and wait for a response.

Special Programming Mode (SPM)...

Entering SPM: Hold down while turning on the radio. Only release

MEM

after the radio sounds a ringing SPM start-up tone.

MEM

Exiting a Menu Item: Select another menu item by rotating Selector
Knob. NOTE: This aborts the phone access / deaccess codes entry, if
Toggle Light/Enter and Parameter Transfer Button is not pressed first.

Exiting Special Programming mode: Turn radio off, then on again.

The following table provides a complete list of the available parameters
and their programming procedures (items with similar procedures are
grouped together).

First go to SPM then rotate Selector Knob to the desired menu item (refer
to the SPM display column below).

SPM Browse Menu

SPM Dis-

SPM Browse Menu

play

Edit Channel Scan
List

Item

To Edit

OFS

Press or to scroll through

MEM

the channels (01 to 20). Press Toggle
Light/Enter and Parameter Change
Button to toggle status of channel.

OFS

Erase Single Chan­nel from Memory

Press or to scroll through the
channels (01 to 20) and Toggle Light/

MEM

Enter and Parameter T ransfer Button

to erase a programmed channel.

SPM Dis-

✰
✰

play

SPM Browse Menu

Item

Edit Phone Access /
Deaccess Code

To Edit

OFS

Press or to enter into edit
mode. to erase unwanted digits.

MEM

MODE

Enter new code.

OFS

Edit PTT ID

Edit Acknowledge­ment / Individual /

Press or to enter into edit
mode. to erase unwanted digits.
Enter new ID.

MEM

MODE

Group / All Call IDs

OFS

xxx

Edit Time-Out

Press or .

MEM

Timer

§

Set SelCall Tone

Status (‘On’ or ‘Off’)
Set Sidetones Sta-

tus (‘On’ or ‘Off’).
Set Alert Tone Vol-

ume (‘Off’ or ‘On’).

OFS

Press or to toggle between

MEM

the available states.
Sidetones Status affects DTMF

sidetones only. If Alert Tone Volume is

all

set to ‘off’,

radio alert tones are disa-

bled.

Set Battery Saver
Status (‘Off’, ‘Nor­mal’ or ‘Enhanced’)

Set Battery Type
‘Alkaline’ or ‘NiCd’

Refer to your AP73 User Manual for a
full description of these menu items.

Set Accessory
Option (‘Auto­sense’, ‘Speaker
Microphone only’
or ‘Headset Only’)

Notes...

✰

xxx

represents a number.

❖

Press Toggle Light / Enter and Parameter Transf er Button to commit

partially entered frequency.

✣

Radio must be equipped with an optional DTMF Decode Option board.

§

SelCall Tone Status only displays when an option board is installed.

2-YEAR LIMITED WARRANTY

FOR RADIOS

We thank you for purchasing our Motorola radios. These
radios are manufactured according to the highest quality
standards set and are backed by Motorola’s two (2) year
warranty. The rechargeable Motorola supplied batteries have
a one (1) year warranty. Kindly approach your dealer for more
information.

Motorola warrants its radios and batteries against defects in
material and workmanship under normal use and service for
the period stated above.

Motorola recommends that you use Motorola supplied
accessories and batteries in connection with the radio. We
would also advise you against attempting any modifications
or repairs or any other form of unauthorised service to your
radio.

Should you have any queries, please contact:
Singapore - Telephone/Fax: [phone]

Beijing - Telephone/Fax: [phone]
Please see page 75 for more information.
Fill in the details of your radio below for your own reference:

Model Name/No.:
Serial Number:
Date of Purchase:
Dealer Name:
Address:
Telephone:

1

8

7

1

2

0

9

3

4

5

6

STEP

L

P

E

D

O

M

S

F

O

11
12

13

2

1

1

0

1

6

14

3

7

A

15

1

7

18

23
22

19

#

21

20

1. On / Off and Volume Knob 13. Mode / Backspace Button

2. Selector Knob 14. Left Scroll / Offset Button

3. Antenna Connector 15. Right Scroll / Memory Button

4. Toggle Light / Enter and Parameter

16. Accessory Connector

Transfer Button

5. Monitor Button 17. SCI Port

6. Push-To-Talk (PTT) Button 18. LCD Screen

7. Signal Button 19. Numeric Keypad

8. Squelch / PL Button 20. Enable / Disable PTT ID Key

9. Low Power / Frequency Step Button 21. Lock / Unlock Key

10. Scan / Nuisance Delete Button 22. Battery Pack

11. Microphone 23. Battery Latches

12. Speaker

NOTE

Keep this page open for easy reference as you go
through the user guide.

Copyright Information

The Motorola products described in this manual may
include copyrighted Motorola computer programs
stored in semiconductor memories or other mediums.
Laws in the United States and other countries pre­serve for Motorola certain exclusive rights for copy­righted computer programs, including the exclusive
right to copy or reproduce in any form the copyrighted
computer program. Accordingly, any copyrighted
Motorola computer programs contained in the Motor­ola products described in this instruction manual may
not be copied or reproduced in any manner without the
express written permission of Motorola. Further more,
the purchase of Motorola products shall not be
deemed to grant either directly or by implication,
estoppel, or otherwise, any license under the copy­rights, patents, or patent applications of Motorola,
except for the normal non-exclusiv e , ro y alty fee license
to use that arises by operation of law in the sale of a
product.

© 1997 by Motorola, Inc.
All Rights Reserved.

Motorola Malaysia Sdn. Bhd. (Company No. 12631DE),
Bayan Lepas Free Industrial Zone, Phase III,
11900 Penang, Malaysia.

Printed in Malaysia.

Motorola, APC, Adaptive Power Control™
Technology and Channel Scan are trademarks of
Motorola, Inc.

Contents

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Packing Information . . . . . . . . . . . . . . . . . . . . .3

Knobs, Buttons, Connectors and Others . . . . .4

Getting Started . . . . . . . . . . . . . . . . . . . . . . . . .8

Basic Operations . . . . . . . . . . . . . . . . . . . . . .14

Turning the Radio On . . . . . . . . . . . . . . . . . 14

Turning the Radio Off . . . . . . . . . . . . . . . . . 14

Adjusting the Volume . . . . . . . . . . . . . . . . .14

High / Low Power Output . . . . . . . . . . . . . .14

Transmitting a Message . . . . . . . . . . . . . . .15

Receiving a Message . . . . . . . . . . . . . . . . .16

Additional Operations . . . . . . . . . . . . . . . . . . .17

Receive And Transmit PL / DPL Code Tables 23

MHz Mode Operations . . . . . . . . . . . . . . . . . . 25

Memory Mode Operations . . . . . . . . . . . . . . .31

Scan Operations . . . . . . . . . . . . . . . . . . . . . .34

Programmable Band Scan . . . . . . . . . . . . .34

Memory Channel Scan . . . . . . . . . . . . . . . .37

DTMF Telephone Interconnect . . . . . . . . . . .40

Voice Selective Call (Optional) . . . . . . . . . . . .44

Special Programming Mode (SPM) . . . . . . . .46

SPM Browse Menu . . . . . . . . . . . . . . . . . . .47

Editing SPM Parameters. . . . . . . . . . . . . . .48

LCD Segments and Indicators . . . . . . . . . . . . 59

Alert Tone Indicators . . . . . . . . . . . . . . . . . . .60

Information For Safe, Efficient Operation . . . . 62

Recycling / Disposal of NiCd Batteries . . . . . .65

Licensing & Service Information . . . . . . . . . . .67

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . .68

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . .73

Limited Warranty . . . . . . . . . . . . . . . . . . . . . .75

Radio Specifications . . . . . . . . . . . . . . . . . . . .76

2-Year Warranty

1

Introduction

Introduction

Congratulations on your purchase of a Motorola two-

way radio. Your radio is a product of Motorola’s more
than 50 years of experience as a world leader in the
designing and manufacturing of communications
equipment. This radio offers superior quality, superior
performance, ultimate flexibility and years of reliable
and effective communications.

This radio incorporates the latest technology available
in two-way radio communications. The use of micro­computer technology makes changing radio character­istics such as operating frequencies and squelch
codes both economical and fast. Any computer
equipped dealer can easily reprogram your radio’s
operating characteristics.

The radio meets tough environmental demands while
providing cost-effective and reliable communications.
It meets established standards for low pressure, high
temperature, low temperature, temperature shock,
solar radiation, rain, humidity, salt fog, dust, vibration,
and shock. This radio also meets the Electronic Indus­try Association RS316B electrical and mechanical
specifications. The Motorola Accelerated Life Test
(ALT) assures that possible failures brought on by field
stress and abuse are identified and designed out of
your radio before it reaches your hands.

All of these features provide for better, yet more cost
effective communications for you.

Coverage of this User Guide

This user guide describes the operation of the AP 73
portable radios.

2

2-Year Warranty

Packing Information

Packing Information

When you receive your packaged Motorola radio,

inspect the shipping carton for any signs of damage.

Next, remove and check the contents of the packing

case to be sure that all items ordered have been

included

.

STEP

L

P

E

D

O

M

S

F

O

7

3

A

Antenna

Adaptor

#

Spring

Antenna

Radio

Belt Clip

Standard Packaged Model Contents

• Radio

• Antenna

• Antenna Adaptor

• Spring Belt Clip

• User Manual

Inspect the equipment thoroughly. If any part of the

equipment has been damaged in transit, report the

extent of the damage to the transportation company

immediately.

NOTE

The radio as shipped accepts an alkaline battery
case (for six standard “AA” size batteries) or a
rechargeable NiCd battery cell-pack (available as
standard or high capacity packs). Please refer to
page 73 for a complete list of available accessories.

2-Year Warranty

3

Knobs, Buttons, Connectors and Others

Knobs, Buttons, Connectors and Others

The numbers in brackets below refer to the loca-

NOTE

tions of the control buttons, knobs, etc. as shown in
the illustration on the inside front cover.

On / Off and Volume Knob (1)

Turns the radio on and off and adjusts the volume
level.

Selector Knob (2)

➊Selects the frequency (Mhz mode), channel (Mem-

ory mode), PL / DL code, frequency step size and
squelch level.

➋Changes the direction of scanning when the radio

is in scan mode.

Antenna Connector (3)

Connects antenna to the radio.

Toggle Light / Enter and Parameter Transfer Button (4)

➊Toggles display backlight status (quick press).
➋Confirms user input (quick press).
➌Transfers parameters from Mhz mode to Memory

mode (long press).

➍Transfers parameters from Memory mode to Mhz

mode (long press).

Monitor Button (5)

Monitors the channel for activities (squelch is dis­abled).

4

2-Year Warranty

Knobs, Buttons, Connectors and Others

Push-To-Talk (PTT) Button (6)

➊Push to talk, release to listen.
➋Press and hold when making DTMF dialling.

Signal Button (7)

➊Toggles between

Signalling Squelch modes.

➋DTMF (Dual Tone Multiple Frequencies) digit ‘A’.

Squelch / PL Button (8)

➊Selects Carrier Squelch level.
➋Selects Receive and Transmit PL / DPL codes

(long press).

➌DTMF digit ‘B’.

Low Power / Frequency Step Button (9)

➊Toggles between high and low transmit power.
➋Selects the frequency step size (long press).
➌DTMF digit ‘C’.

Scan / Nuisance Delete Button (10)

➊Enables / disables scanning in Mhz and Memory

mode.

➋Deletes a Nuisance Channel in Memory mode

(long press).

➌DTMF digit ‘D’.

SIG

,

A

Carrier

, Coded (PL / DPL), and

SQL

B

,

PL

LOW

C

,

STEP

SCAN

D

,

N-DEL

Microphone (11)

Used in the process of transmitting messages.

2-Year Warranty

5

Knobs, Buttons, Connectors and Others

Speaker (12)

Used in the process of receiving messages.

Mode / Backspace Button (13)

MODE

,

➊Toggles between Mhz / Memory modes.
➋When editing phone numbers and IDs, this key

acts as a backspace (rub-out) key.

Left Scroll / Offset Button (14)

OFS

,

➊Selects the TX (repeater) offset frequency type.
➋Scrolls to the left when editing phone numbers and

IDs.

Right Scroll / Memory Button (15)

MEM

,

➊Stores / recalls phone numbers, phone access and

phone deaccess code.

➋If held on power-up, radio enters into

gramming

mode.

Special Pro-

➌Scrolls to the right when editing phone numbers

and IDs.

Accessory Connector (16)

Connects accessories such as remote speaker
microphone or external handset to radio.

SCI Port (17)

Used to service the radio.

LCD Screen (18)

Displays information about the current state of the
radio (see

“LCD Segments and Indicators”

page 59).

6

2-Year Warranty

on

Knobs, Buttons, Connectors and Others

Numeric Keypad (19)

➊Used to enter the frequency (MHz mode), phone

number or phone number location.

➋Used for numeric data entry during parameter

changing session.

➌DTMF digits ‘0’ to ‘9’.

Enable / Disable PTT ID Key (20)

,

➊Enables / disables PTT ID (long press).
➋DTMF digit ‘#’.
➌Pressing this key after sends the programmed

MEM

phone deaccess code.

➍Pressing this key immediately following ,

inserts a pause.

Lock / Unlock Key (21)

,

➊Locks / unlocks the keypad (long press).
➋DTMF digit ‘
➌Pressing this key after sends the programmed

∗’.

MEM

phone access code.

Battery Pack (22)

Power supply to the radio.

Battery Latches (23)

For attaching battery tray / pack to the radio.

2-Year Warranty

7

Getting Started

Getting Started

Attaching and Removing the Antenna

Attaching

➊

Fasten the antenna to the radio by placing the
threaded end of the antenna into the Antenna Con­nector (3).

➋

Rotate the antenna clockwise until tight.

Removing

• Turn the antenna in an anti-clockwise direction until
it disengages from the radio.

Attaching and Removing the Belt Clip

Attaching

➊

Align mounting rails of the radio with the grooves of

belt clip.

➋

Slide belt clip downwards until it clicks into place.

Removing

➊

Insert the end of a key between the release tab

and the back surface of the radio.

➋

Lift the release tab; slide the belt clip upwards.

Installing and Removing Batteries

Installing

➊

Align the Battery Pack (22) with the back of the

radio.

➋

Slide the Battery Pack (22) into place.

8

2-Year Warranty

Getting Started

Removing

➊

Release the Battery Latches (23).

➋

Slide the Battery Pack (22) away from the radio.

Charging NiCd Battery Pack

Before using your radio with a rechargeable (NiCd)
battery, you must charge the battery.

DO NOT attempt to charge your radio if you are

WARNING

using alkaline batteries. Doing this may cause the
batteries to leak or explode, leading to severe skin
burns or eye injuries.

IMPORTANT

Transmitting a message while your radio is charg­ing can cause the radio or the charger to operate
improperly. DO NOT transmit when your radio is
charging.

NOTE

Your radio may take twice as long to charge if it is
not turned off during charging.

2-Year Warranty

9

Getting Started

Charging your Battery for the FIRST time

New batteries are supplied in a totally uncharged
state. T o ensure maximum battery performance, a new
battery MUST be FULLY charged. Refer to the fol­lowing table for guidelines.

T able 1: Length of time required to full y c harge a ne w

battery

Wall Charger (with/

without Wall

Charger Base)

Standard Desktop

Charger

Quick Charge

Desktop Charger

Standard
Capacity

NiCd Battery

Pack

16 hours 20 hours

16 hours 16 hours

16 hours 16 hours

High

Capacity

NiCd

Battery Pack

10

2-Year Warranty

Getting Started

Charging your Battery Subsequently

Refer to the following table for guidelines on recharg-

ing your batteries.

Table 2: Length of time required to fully recharge a

used battery

Standard
Capacity

NiCd Battery

Capacity

NiCd Battery

Pack

Wall Charger (with/

without Wall

Charger Base)

Standard Desktop

Charger

Quick Charge

Desktop Charger

10 hours 20 hours

10 hours 10 hours

3 hours 3 hours

NOTE

A battery that is left unused for several months will
be completely discharged. In this case, follow
guidelines in Table 1 on page 10 to recharge the
battery.

Charging with Wall Charger

➊

Make sure the battery pack is attached to the
radio.

NOTE

With the Charger Base, the battery can be charged
when connected or not connected to the radio.

High

Pack

Turn the radio off (if it is turned on).

➋

2-Year Warranty

11

Getting Started

If not using the Charger Base:

Lift the dust cover cov ering the Accessory Connec-

➌

tor (16).

➍

Insert one end of the Wall Charger into the lower
port of the Accessory Connector (16), and the
other into an electrical outlet.

If using the Charger Base:

Insert the radio / battery into the charging docket.

➌
➍

Refer to Table 1 and 2 on pages 10 and 11 for an
estimation of the duration involv ed f or charging the
battery pack.

➎

Unplug the Wall Charger from the radio when
charging is complete.

NOTE

The LED on the
ously during charging.

Wall Charger

is lit (red) continu-

Charging with Desktop Charger

With Desktop Chargers, the battery can be charged

NOTE

when connected or not connected to the radio.

Place the Charger Insert into the Desktop Charger.

➊

12

2-Year Warranty

Getting Started

➋

Insert the radio / battery into the charging docket.

If using the Quick Charge Desktop Charger:

Press the Quick Charge button.

➊
➋

Refer to Table 1 and 2 on pages 10 and 11 for an
estimation of the duration involv ed f or charging the
battery pack.

➌

Remove the radio / battery from the charger when
charging is complete.

The LED on the charger lights up continuously dur­ing charging. For the Standard Desktop Charger, it
is red for the whole charging period. For the Quick
Charge Desktop Charger, it changes from yellow
(before charging begins) to red (during charging) to
green (when charging is completed).

CAUTION

The Quick Charge Desktop charger runs on a 3­hour timer which begins counting each time you

NOTE

press the
tery or radio from the charger before the battery is
fully charged, or removing and replacing battery /
radio repeatedly during charging, and then press­ing the
or damage the battery. Press the
ton only when the battery needs to be fully
charged.

Quick Charge

Quick Charge

button.Removing the bat-

button again can overcharge

Quick Charge

but-

2-Year Warranty

13

Basic Operations

Basic Operations

Turning the Radio On

• Rotate the On / Off and Volume Knob (1) clock-
wise to turn the radio on.

Turning the Radio Off

• Rotate the On / Off and Volume Knob (1) anti-
clockwise until a click is heard to turn the radio off.

Adjusting the Volume

• Rotate the On / Off and Volume Knob (1) clock-
wise to increase your radio’s volume level, or anti­clockwise to decrease it.

To do an initial setting of the volume, press and
hold the
noise is heard. Continue holding the

ton (5)

High / Low Power Output

Monitor Button (5)

until the background

Monitor But-

while adjusting to the desired volume.

LOW

• Press to toggle between high and low power
output levels.

C

STEP

NOTE

NOTE

The indicator

(18)

when the radio is operating in

LOW

lights up on the

LCD Screen

low power

NOTE

High power mode can improve the clarity of voice
activity in areas where signals are weak while low
power mode extends battery life.

14

mode.

2-Year Warranty

Basic Operations

Transmitting a Message

➊

Select the desired channel or frequency (see

“MHz Mode Operations” and “Memory Mode
Operations” on pages 25 and 31).

➋

Press and hold the Monitor Button (5), and listen

for channel activity.

If the selected channel is in Carrier squelch mode -

CTCSS indicator is not displayed on the

Screen (18)

If the channel is clear, press the Push-To-Talk

➌

, you can skip step ➋.

LCD

(PTT) Button (6) and speak clearly into the Micro­phone (11) (see “Information For Safe, Efficient
Operation” on page 62 for more information).

TX

NOTE

NOTE

Unless disabled (“dot” indicator flashes on the

Screen (18)

being transmitted (see
can start your conversation when the tones end.

), PTT ID tones are heard as they are

“PTT ID”

on page 17). You

LCD

NOTE

The TX indicator lights up on the
when the
pressed.

Push-To-Talk (PTT) Button (6)

LCD Screen (18)

is

2-Year Warranty

15

Basic Operations

Whenever you transmit a message, you are using
the resources of the transmitting channel. Speaking
for long periods of time would deprive others from
using that channel.

NOTE

IMPORTANT

The maximum duration for transmission is deter­mined by the value of the

“Editing Time Out Timer”

reach the time limit, a
is sounded, and the transmission is cut off.

Time-Out-Timer

on page 53). Once you

“Time-Out Timer Alert”

(see

Receiving a Message

• If the Push-To-Talk (PTT) Button (6) is pressed,
release it and listen for incoming messages.

NOTE

Make sure the volume level is set properly, or else
you may receiv e a message but are una w are about
it.

tone

16

2-Year Warranty

Additional Operations

Additional Operations

Display Backlight

• Press the Toggle Light / Enter and Parameter
Transfer Button (4) to turn on / off the backlight.

To conserv e po w er, the backlight is programmed to
automatically turn off after 5 seconds.

NOTE

NOTE

Pressing either the
or the

Monitor Button (5)

light.

Push-To-Talk (PTT) Button (6)

has no effect on the back-

PTT ID

If programmed, the radio transmits a DTMF identifica­tion code (unit ID), indicating which portable is in oper­ation.

During a conversation, the code is normally sent only
on the initial PTT press (unless PTT ID has been dis­abled). The ‘TX’ indicator lights for the duration of the
PTT ID. If there is no PTT or receive activity for 7 sec­onds, or if you change the frequency or channel (or
scan resumes), the PTT ID is once again transmitted
on the next PTT press.

• Press and hold to enable / disable PTT ID.

NOTE

Upon pressing , you will hear a beep. Hold the
button down until you hear a second beep, indicat­ing that the PTT ID status has been changed.
When PTT ID is
on the

LCD Screen (18)

disabled

, the “dot” indicator flashes

.

2-Year Warranty

17

Additional Operations

Locking / Unlocking the Radio’s Function

Locking the radio will disable all buttons except the

Toggle Light / Enter and Parameter Transfer Button (4)
Monitor Button (5),Push-To-Talk (PTT) Button (6)

. Pressing a locked button will result being
shown on the
radio:

• Press and hold (for about 2 seconds) until two
beeps are heard.

LCD Screen (18)

. To lock / unlock the

,

and

The

lock /unlock

when the power is turned off.

status remains unchanged even

Changing Squelch Modes

Squelch acts as a kind of filtering system which helps
to control the amount of signals the radio receives.
Configuring the radio to receive only the desired sig­nals minimizes interference from other users of the
same channel.

NOTE

This radio supports

Squelch - Tone Private-Line (PL)
(DPL)

and

(SelCall)

Signalling Squelch - Voice Selective Call

operations on a per channel basis.

Carrier Squelch

the selected receive channel (frequency) to hear the
conversation.
radio(s) having the same
selected receive channel (frequency) to hear the con­versation. S
decoded by radios equipped with optional DTMF
Decode boards with valid

Call)

identification code (see

(Optional)”

Coded Squelch

ignalling Squelch

on page 44).

Carrier Squelch (CSQ), Coded

,

Digital Private-Line

transmission allows all radios tuned to

transmission only allows

PL / DPL

transmission can only be

code on the

Voice Selective Call (Sel-

“Voice Selective Call

18

2-Year Warranty