Motorola Ap73 Portable Radios User Manual

Getting Started
132-Year Warranty
ËInsert the radio / battery into the charging docket.
If using the Quick Charge Desktop Charger:
Ê
Press the Quick Charge button.
ËRefer to Table 1  and 2  on pages 10 and 11 for an
estimation of the duration involved for charging the
battery pack.
ÌRemove the radio / battery from the charger when
charging is complete.
NOTEThe LED on the charger lights up continuously dur-
ing charging. For the Standard Desktop Charger, it
is red for the whole charging period. For the...

Basic Operations
142-Year Warranty
Basic Operations
Turning the Radio On
¥ Rotate theOn / Off and Volume Knob (1) clock-
wise to turn the radio on.
Turning the Radio Off
¥ Rotate theOn / Off and Volume Knob (1) anti-
clockwise until a click is heard to turn the radio off.
Adjusting the Volume
¥ Rotate theOn / Off and Volume Knob (1) clock-
wise to increase your radioÕs volume level, or anti-
clockwise to decrease it.
NOTETo do an initial setting of the volume, press and
hold theMonitor Button (5) until...

Basic Operations
152-Year Warranty
Transmitting a Message
ÊSelect the desired channel or frequency (see
ÒMHz Mode OperationsÓ andÒMemory Mode
OperationsÓ on pages 25 and 31).
ËPress and hold theMonitor Button (5), and listen
for channel activity.
NOTEIf the selected channel is in Carrier squelch mode -
CTCSSindicator is not displayed on theLCDScreen (18), you can skip stepË.
Ì
If the channel is clear, press thePush-To-Talk
(PTT) Button (6) and speak clearly into theMicro-
phone (11) (seeÒInformation For...

Basic Operations
162-Year Warranty
IMPORTANTWhenever 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.
NOTEThe maximum duration for transmission is deter-
mined by the value of theTime-Out-Timer (seeÒEditing Time Out TimerÓon page 53). Once you
reach the time limit, aÒTime-Out Timer AlertÓtoneis sounded, and the transmission is cut off.
Receiving a Message
¥ If thePush-To-Talk (PTT) Button (6)is...

Additional Operations
172-Year Warranty
Additional Operations
Display Backlight
¥ Press the Toggle Light / Enter and Parameter
Transfer Button (4) to turn on / off the backlight.
NOTETo conserve power, the backlight is programmed toautomatically turn off after 5 seconds.
NOTEPressing either thePush-To-Talk (PTT) Button (6)or theMonitor Button (5) has no effect on the back-light.
PTT ID
If programmed, the radio transmits a DTMF identiÞca-
tion code (unit ID), indicating which portable is in oper-
ation....

Additional Operations
182-Year Warranty
Locking / Unlocking the RadioÕs Function
Locking the radio will disable all buttons except theToggle Light / Enter and Parameter Transfer Button (4),Monitor Button (5),Push-To-Talk (PTT) Button (6) and
. Pressing a locked button will result  being
shown on the
LCD Screen (18). To lock / unlock the
radio:
¥ Press and hold  (for about 2 seconds) until two
beeps are heard.
NOTEThelock /unlock status remains unchanged evenwhen the power is turned off.
Changing Squelch...

Additional Operations
192-Year Warranty
NOTETo performSignalling Squelch (SelCall) operation,
the radio must be equipped with an optionalDTMFDecode board.
To temporarily override the default receive squelch
mode for the channel:
¥ Press  to change between Carrier (CSQ),
Coded (PL /DPL) and Signalling (SelCall) squelch
modes.
NOTEThe ÒCTCSSÓ indicator lights up continuously when
the radio is operating inCoded (PL / DPL) mode,
ßashes when operating inSignalling (SelCall) mode
and is not displayed when...

Additional Operations
202-Year Warranty
NOTEUsing this procedure in Memory mode to switch
from one squelch mode to the other, does not affect
the default squelch mode for the channel. Each
time you turn the radio off and on again, or when
you switch to another channel and back again, the
radio reverts back to its default squelch mode.
Setting Squelch Level
An open (low) squelch level sets the threshold for the
receiving signal strength to be low. This means that
the radio would receive a great variety of...

Additional Operations
212-Year Warranty
NOTEIf you reach the upper (Ô15Õ) or lower (Ô00Õ) limit of
the squelch range, the squelch level does NOT
wrap around to the opposite limit but remains
where it is.
Selecting The Receive PL / DPL Squelch Code
NOTEReceive PL / DPL squelch code selection can onlybe done in MHz mode.
There are 126 different Receive PL / DPL codes avail-
able, numbered from 001 to 126 (see
ÒReceive And
Transmit PL / DPL Code TablesÓon page 23).
NOTEReceive PL / DPL code Ô000Õ...

Additional Operations
222-Year Warranty
Selecting A Transmit PL / DPL Squelch Code
There are 126 different Transmit PL / DPL codes avail-
able, numbered from 001 to 126 (seeÒReceive And
Transmit PL / DPL Code TablesÓon page 23).
NOTETransmit PL / DPL code Ô000Õ representsCarriersquelch.
Ê
Press and hold  until xxx is shown (where
xxx represents the active Receive PL / DPL code
number).
ËPress  momentarily to toggle the display to
xxx (where xxx represents the active Transmit
PL / DPL code number)....