Motorola AP 73 user manual Locking / Unlocking the Radio’s Function, Changing Squelch Modes

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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) 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.

NOTE

The lock / unlock status remains unchanged even when the power is turned off.

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 sig- nals minimizes interference from other users of the same channel.

This radio supports Carrier Squelch (CSQ), Coded Squelch - Tone Private-Line (PL), Digital Private-Line (DPL) and Signalling Squelch - Voice Selective Call (SelCall) operations on a per channel basis.

Carrier Squelch transmission allows all radios tuned to the selected receive channel (frequency) to hear the conversation. Coded Squelch transmission only allows radio(s) having the same PL / DPL code on the selected receive channel (frequency) to hear the con- versation. Signalling Squelch transmission can only be decoded by radios equipped with optional DTMF Decode boards with valid Voice Selective Call (Sel- Call) identiﬁcation code (see “Voice Selective Call (Optional)” on page 44).

18	2-Year Warranty

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Contents Portable Radios AP73 Quick Reference Basic OperationMHz Operation Individual Call, , Group Call, or All Call SPM Dis- SPM Browse Menu Year Limited Warranty For Radios Step Copyright Information Contents Introduction Coverage of this User GuidePacking Information Radio Antenna Antenna Adaptor Spring Belt ClipKnobs, Buttons, Connectors and Others Push-To-Talk PTT Button Signal ButtonLow Power / Frequency Step Button Squelch / PL ButtonSpeaker Mode / Backspace ButtonAccessory Connector Left Scroll / Offset ButtonBattery Latches Enable / Disable PTT ID KeyBattery Pack Numeric KeypadAttaching and Removing the Antenna Installing and Removing BatteriesGetting Started Attaching and Removing the Belt ClipCharging NiCd Battery Pack Charging your Battery for the First time Length of time required to fully charge a new battery➊ Make sure the battery pack is attached to the radio Charging your Battery SubsequentlyLength of time required to fully recharge a used battery Charging with Wall ChargerCharging with Desktop Charger ➊ Place the Charger Insert into the Desktop Charger➋ Insert the radio / battery into the charging docket Basic Operations Adjusting the VolumeHigh / Low Power Output Turning the Radio On Transmitting a Message Receiving a Message Display Backlight Press and hold to enable / disable PTT IDAdditional Operations Locking / Unlocking the Radio’s Function Changing Squelch ModesCtcss Setting Squelch Level Selecting The Receive PL / DPL Squelch Code ➊Press and holdSelecting a Transmit PL / DPL Squelch Code ➋P ressReceive And Transmit PL / DPL Code Tables RPL.xxx PL Freq Equiv TPL.xxx PL CodeEquiv Selecting the Frequency Step Size MHz Mode OperationsSelecting MHz Mode ➊Press and holdSelecting a Receive Frequency Enter the desired frequencyIi Through The Selector Knob CombinationTo ﬂash takes about 3 seconds Selecting The TX OffsetProgramming a User-Deﬁned TX Frequency MHz Mode Operations MHz Mode Operations Selecting a Memory Channel Memory Mode OperationsSelecting Memory Mode Rotate the Selector Knob 2 to the desired chan- nel numberProgramming a Memory Channel Loading a Memory Channel Scan Operations Programmable Band ScanRotate the Selector Knob 2 anti-clockwise ➊PressFrequency range ➋PressTransmitting During Band Scanning Pressing Push-To-Talk PTT Button 6, a digit onMemory Channel Scan BeforePress D Press Push-To-Talk PTT Button 6 to talk, release to listenScan Operations Press Dtmf Telephone InterconnectPlacing a Telephone Call Stores the preprogrammed telephone numberPress and hold Push-To-Talk PTT Button Last Number RedialStoring a Phone Number Then pressIf you make a mistake, press To scroll the cursor to the left or rightDisplaying a Stored Phone Number Voice Selective Call Optional Receiving a Voice Selective CallSending a Voice Selective Call Programmed see Edit Selective Call IDs onExiting SPM Special Programming Mode SPMEntering SPM Turn off the radio to exit SPMSPM Browse Menu To scroll through the channels Editing SPM ParametersEditing the Channel Scan List Erase a Single Channel from Memory➋ Press Editing the Phone Access / Deaccess CodesTo enter the edit mode Edit PTT ID ➊ In SPM, rotate the Selector Knob 2 to the PTT IDIng PTT ID Edit Selective Call IDs ➋ Use Editing Time Out TimerSetting the Selective Call Tone Status To change the current statusSetting the Sidetones Status To toggle between On and Off➋ Use OFS Options Setting the Alert Tone VolumeSetting the Battery Saver Status To scroll through the three➊ In SPM, rotate the Selector Knob 2 to the Set Setting the Battery TypeSetting the Accessory Sense Option To scroll through the optionsFactory Reset Feature Special Programming Mode SPM Indicators with Segments LCD Segments and IndicatorsIndicators Alert Tone Indicators Group and All Call Selective Call Decode Individual Selective Call DecodeAcknowledgment ID Decode Nuisance Channel DeleteFor Portable Two-way Radios Information For Safe, Efﬁcient Opera- tionExposure To Radio Frequency Energy Electromagnetic Interference/compatibility Potentially Explosive AtmospheresBlasting Caps And Areas For Vehicles With An Air BagEurope Recycling / Disposal of NiCd BatteriesUnited States AsiaJapan Licensing Licensing & Service InformationService Radio is dead TroubleshootingNiCd battery does not charge or last long enough Solution Clean battery and charger contacts often Alkaline Battery does not last long enough 10 minutesHearing other conversations or noise on your radio Solution Use proper radio etiquetteRadio will not talk to other radios in system Limited talk rangeYou have tried a solution for any of the above symp You hear constant static from speakerToms, without success Antennas AccessoriesBattery & Charging Accessories Radio to Radio Cloning Accessory Audio & Signalling Accessories for all modelsCarrying Cases & Accessories Limited Warranty Motorola Radio Products Receiver Radio SpeciﬁcationsGeneral Transmitter