Motorola Ap73 Portable Radios User Manual
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Memory Mode Operations 332-Year Warranty NOTEThe radio remains in MHz mode after successfulprogramming of the channel. CAUTIONIf the selected memory channel was already pro- grammed (channel number lit continuously), the new frequency information overwrites the previous information. Loading A Memory Channel The data of a memory channel (receive and transmit frequencies, TX offset type and offset frequency) can be copied over into the MHz mode. This allows you to tune the radio in the MHz mode from the point speciÞed by the memory channel data. In Memory mode: Ê Rotate theSelector Knob (2) to the desired mem- ory channel number. ËPress and holdToggle Light / Enter and Parame- ter Transfer Button (4) for about 3 seconds. NOTEAvalid keypresstone sounds when the memory channel data has been successfully copied over to the MHz mode.
Scan Operations 342-Year Warranty Scan Operations Scan operation tells the radio to monitor a number of frequencies or channels. When there are some activi- ties at a particular frequency or channel, the radio stops scanning and changes to that frequency or channel. Scan modes supported by the radio are: (i) Programmable Band scan (MHz mode) (ii) Memory Channel scan (Memory mode) NOTEEach frequency or channel is given the same prior-ity i.e.non-priority scan. IMPORTANTThe radio will not recall the scan state if it is pow-ered off while scanning. Programmable Band Scan In the MHz mode, the radio scans over a prepro- grammed range of frequencies usually speciÞed in memory channels 19 and 20. NOTEUser can specify the frequency range for scanning by programming the frequency limit into memory channel 19 (usually the lower limit) and memory channel 20 (usually the upper limit) (see ÒPro-gramming A Memory ChannelÓon page 32). Scanning A Frequency Range In MHz mode:
Scan Operations 352-Year Warranty ÊPress to begin scanning the preprogrammed frequency range. NOTEThe frequency range is scanned according to the frequencies speciÞed in channels 19 and 20, and the selected frequency step size. If the operating fre- quency before scanning starts is within the scan range, the radio starts scanning from that fre- quency, otherwise, it starts from the frequency speciÞed by memory channel 19 (or the lowest fre- quency in the band if channel 19 is blank). NOTEWhen the ÔSCANÕ indicator ßashes, scanning is in progress and the currently scanned frequency is dis- played. To change the scan direction: ¥ Rotate the Selector Knob (2) anti-clockwise. NOTEIf activity is detected, the radio stops scanning and stays on the active frequency. The ÔSCANÕ indicator remains on, and you will hear the conversation, pro- vided the PL/DPL code (if required) is correct. IMPORTANTRadio resumes scanning after approximate 5 seconds (even if activity is still received). If received activity ceases, the radio resumes scan- ning after another 7 seconds, unless receive activ- ity resumes. Ë Press to stop scanning. N-DELDSCAN N-DELDSCAN
Scan Operations 362-Year Warranty NOTEPressingPush-To-Talk (PTT) Button (6), a digit on the numeric keypad, or also ends the scanning. NOTEThe ÔSCANÕ indicator turns off when scanning is terminated and the radio displays the frequency where scanning stopped. IMPORTANTIf both memory channels are left blank (unpro- grammed), the radio scans the entire frequency band. If channel 19 is programmed but channel 20 is blank, the upper frequency limit becomes the highest frequency in the band. If channel 20 is pro- grammed but channel 19 is blank, the lower fre- quency limit becomes the lowest frequency in the band. If the frequency stored in channel 19 is lower than that stored in channel 20, then scan proceeds in an incrementing order otherwise, scan proceeds in a decrementing order. Transmitting During Band Scanning When the scan is locked at a frequency: ¥ Press Push-To-Talk (PTT) Button (6). IMPORTANTAs soon asPush-To-Talk (PTT) Button (6) is pressed, the radio exits band scanning and trans- mits the TX frequency which corresponds to the active RX frequency, plus or minus any selected TX offset. If the user-deÞned mode is selected (Ô+Õ and ÔÐÕ indicators both on), the radio transmits theuser-deÞnedTX frequency.
Scan Operations 372-Year Warranty Memory Channel Scan In the Memory mode, the radio scans allprogrammedmemory channels that are also in the channel scan list. NOTEThe scan list is edited using the Special Program- ming mode (seeÒSpecial Programming Mode(SPM)Óon page 46). NOTEChannels may be temporarily removed from the scan list using a Nuisance Channel Delete feature (seeÒNuisance Channel DeleteÓon page 38). Scanning Memory Channels In Memory mode, Ê Press to begin channel scanning. NOTEWhen the ÔSCANÕ indicator ßashes, scanning is in progress and theHome Channel (the active channel before was pressed) is displayed until activity is received on another channel. The channels are scanned in an increasing order (from lowest to highest). To scan in a decreasing order: ¥ Rotate the Selector Knob (2) anti-clockwise. N-DELDSCAN N-DELDSCAN
Scan Operations 382-Year Warranty NOTEThe radio scans through all channels in the prepro- grammed scan list. If activity is detected, the radio stops scanning and stays on the active channel. The ÔSCANÕ indicator remains on, and you will hear the conversation, provided the PL/DPL code (if required) is correct. In Carrier squelch and Coded squelch modes, when activity is over and a 7-sec- ond Òhang timeÓ has expired, the display reverts to theHome Channel and scanning resumes. To stop scanning: ¥ Press . Transmitting During Channel Scanning When the scan is locked at a channel: ¥ Press Push-To-Talk (PTT) Button (6) to talk, release to listen. IMPORTANTThe radio transmits on the current active TX fre- quency. But, ifPush-To-Talk (PTT) Button (6) is pressed before the scan is locked at any channel, theHome Channel TX frequency is used. Nuisance Channel Delete When the radio is scanning, it would stop at any chan- nel within the scan list that has activity. A channel that generates unwanted signals continuously is called a Nuisance Channel. To temporarily remove the chan- nel from the scan list: ¥ Press and hold for about 3 seconds while scan locks on theNuisance Channel. N-DELDSCAN N-DELDSCAN
Scan Operations 392-Year Warranty NOTETwo medium-pitched ÒbeepsÓ are sounded indicat- ing the radio has temporary removed theNuisanceChannel from its scan list. IMPORTANTTo add a deleted nuisance channel back into the scan list, exit and reenter the scan function or restart the radio.
DTMF Telephone Interconnect 402-Year Warranty DTMF Telephone Interconnect Dual Tone Multiple Frequency (DTMF) tones are encoded by the radio to dial into (access) the landline telephone network and return (deaccess) to conven- tional radio operation. Once the telephone network has been accessed, phone numbers can be dialled either manually or from memory. The keypad provides support for DTMF digits 0 to9, and the charactersA,B,C,D,* and#. NOTEThe radio is capable of storing a maximum of 9 pre-programmed phone numbers (up to 12 digits each). Placing a Telephone Call To place a call: Ê Press and hold the Push-To-Talk (PTT) Button (6). ËDial the access code manually using the DTMF keys or press then to send the prepro- grammed access code. ÌRelease thePush-To-Talk (PTT) Button (6) and wait for a dial tone. ÍPress and hold the Push-To-Talk (PTT) Button (6) and either manually dial the telephone number or press and the phone number location that stores the preprogrammed telephone number. ÎPress thePush-To-Talk (PTT) Button (6) to talk; release to listen. NOTEIf you press a phone number location which has not been programmed, the radio will sound an Invalid Button Press tone and no further action is taken. MEM MEM
DTMF Telephone Interconnect 412-Year Warranty To hang up: Ê Press and hold the Push-To-Talk (PTT) Button (6). ËManually dial the deaccess code or press then to send the preprogrammed deaccess code. Last Number Redial Manually dialled phone numbers (up to 16 digits long) are stored in numeric location Ô0Õ for quick redial capa- bilities.They are sent exactly as preprogrammed tele- phone numbers are. After you receive a dial tone: ¥ Press and holdPush-To-Talk (PTT) Button (6), then press and . NOTELast Number Redial only stores manually dialled numbers and NOT preprogrammed telephone num- bers. The number set is stored in phone location 0 until the radio is turned off or until another DTMF sequence is manually dialled. NOTEIf you attempt to perform a last number redial where no manual numbers have yet been dialled since radio power-up, the radio will sound an Invalid But-ton Press tone. Storing a Phone Number A maximum of 9 telephone numbers (up to 12 digits each) can be stored into the radio memory. Each phone number is stored and recalled via a unique number on the keypad in the range of1 to9. The fol- lowing procedure can also be used to store the access / deaccess codes (up to 8 digits each): MEM MEM
DTMF Telephone Interconnect 422-Year Warranty ÊPress and hold until you hear a second Valid Button Press tone (takes about 2 seconds). ËEnter a phone number location (in the range of1to 9) to store a phone number or press to store the access code or to store the deacess code. ÌEnter the phone number (up to 12 digits long), or access / deaccess code (up to 8 digits long). NOTEValid digits are DTMF digits0 to9, the charactersA,B,C,D,* and#, and pause digits. NOTEPause digit ( )causes the radio to wait in between transmission of the digits programmed before and after it. One or more pause digits can be entered between successive digits of the phone number (or access / deaccess code). When a pause digit is successfully entered, two beeps are heard; the display changes from ÔAÕ to Ô-Õ. Pause digits placed at the end of a phone number are not remembered by the radio. NOTEIf you make a mistake, press to scroll the cur- sor to the left and erase the incorrect entry. To view a numeric sequence of more than 6 digits, press or to scroll the cursor to the left or right. MEM (ßashing cursor) MODE OFSMEM