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AR-147
AR-247
AR-447
TMA-281A
COMMANDO 246 BM

MOBILE TRANSCEIVER

USER'S MANUAL

Summary of Contents for AR-147

Page 1: ...AR 147 AR 247 AR 447 TMA 281A COMMANDO 246 BM MOBILE TRANSCEIVER USER S MANUAL ...

Page 2: ...es SAVE THIS INSTRUCTION MANUAL CAUTION This Instruction Manual covers the following models AR 147 144MHz FM TRANSCEIVER AR 247 222 230 250MHz FM TRANSCEIVER AR 447 430 440MHz FM TRANSCEIVER TM281A 144MHz FM TRANSCEIVER COMMANDO 246BM 245 246 MHz TRANSCEIVER NOTE Equipment damage may occur but not personal injury FCC WARNING This equipment generates or uses radio frequency energy Changes or modifi...

Page 3: ...FUNCTION LIST 40 7 MAINTENANCE 42 GENERAL INFORMATION 42 SERVICE 42 IN CASE OF DIFFICULTY 43 1 BEFORE OPERATION 3 2 SPECIFICATIONS 5 3 ACCESSORIES 6 4 INSTALLATION INSTRUCTION 6 5 OPERATION 9 CONTROL FUNCTION 9 RECEIVER OPERATION Reception 14 Frequency Selection 15 Frequency Step Selection 15 TRANSMITTER OPERATION Transmit Basics 16 Time out Timer TOT 16 MEMORY Memory Channels 17 Initial State 17 ...

Page 4: ...t sunlight or close to heating appliances To ensure good ventilation do not put anything on top of the cabinet and allow at least 15cm 6 inch of space behind the unit The power requirement is 13 8 VDC Never attempt connection to a 24 VDC source Do not place the Unit in areas off excessive dust high humidity or on unstable surfaces Do not drop pieces of metal needles coins and other electrically co...

Page 5: ...ipe the front panel and other exterior surfaces of the with a soft dry cloth or a soft cloth lightly moistened with water If an abnormal odor or smoke is detected immediately turn the power off and pull out the power plug Connect the ADI service station or our dealer Do not pull the power cord when disconnecting it from the AC wall outlet Grasp the plug and ensure that your fingers do not touch th...

Page 6: ...44 to146 144 to148 USA 430 to 440 TM281A 144 to148 THA COMMANDO 246BM 245 to 246 THA F3E FM 50Ω 20 C to 60 C 4 F to 140 F 13 8V DC 15 11 7 15 8V Negative Less than 9A Less than 12A Less than 0 6A Less than10A Less than12A Less than9A Less than 5ppm 140x40x166 5 1 2 x 1 37 64 x 6 17 32 1 2 2 65lbs Approx 60W Approx 25W Approx 7W Approx 30W Approx 15W Approx 7W Approx 35W Approx 15W Approx 7W Approx...

Page 7: ...ion Manual 1 ea Warranty Card 1 ea INSTALLATION INSTRUCTION 4 1 INSTRUCTION MOUNTING BRACKET When installing the transceiver in a vehicle consider the ease of operation and safety when selecting the location for the mounting bracket 1 Install the bracket using the supplied flat washer and self tapping screws 4 pc s each 2 Attach the transceiver loosely using the 4 SEMs screws 3 Align the grooves i...

Page 8: ...rating 4 After completing the wiring wrap the fuse holder with heat resistant tape to protect against heat and moisture 5 Do not remove the fuse even if the power cable is too long A Battery Connections Connect the power cable directly to the battery terminals Using of the cigarette lighter socket will lead to a poor connection and will result in poor performance Pay close attention to the polarit...

Page 9: ... will cause the transceiver output to drop and may lead to TVI or BCI reports 1 Never connect the AC power cable to the AC until all other connections have been made 2 Before connecting and disconnecting the power connector be sure to turn OFF the POWER switches of both the transceiver and the DC power supply 3 Observe polarity of the DC power cable The Transceiver operates on 13 8 VDC negative gr...

Page 10: ...ion will increase the volume and counterclockwise rotation will decrease the volume SQ Squelch control This control is used to select the desired squelch threshold level LOW DIM key LOW This function is used to select the transmit output power level HI MID or LOW DIM This function is used to select the intensity of the front panel display illumination Pressing the F key for longer than 1 second an...

Page 11: ... Recall mode from the VFO mode The Tuning control can then be used to select the desired memory channel Press the key for longer than 1 second will initiate memory channel scanning Pressing the key within 10 second of pressing the F key will store the display data into memory In the MR channel mode pressing the F key for longer than 1 second and then pressing the MR key will cause the Memory chann...

Page 12: ...ctivated This function allows you to watch two different frequencies The Transceiver is capable of following types of dual watch operation 1 Listen on the dial frequency and the memory frequency under M1 2 Listen on the dial frequency and one of the memory frequencies 3 Listen on the dial frequency and a memory frequency under scanning CALL key Press this key to activate the call channel function ...

Page 13: ...r indicates the relative receiver signal strength or the relative transceiver power output TX On during transmit F On whenever the function has been depressed Also shows the last memory channel number that has been selected LOCK On when the Lock function has been activated Indicates the active memory channel number SKP indicates that the channel is lock out T SQ On when the CTCSS DCS Decode and En...

Page 14: ... jack This jack is used to connect an external speaker The speaker should have an impedance of 8 ohms UP DOWN switches These switches can be used to increase or decrease the VFO frequency the Memory channel number and the subaudible tone etc PTT push to Talk switch The transceiver will transmit whenever this switch is depressed CALL Key This key functions just like the CALL key on the front of the...

Page 15: ...is depressed You can disable this function by pressing the F key for longer than 1 second and then pressing the DTMF key 5 2 1 Reception 1 Connect the power supply antenna and microphone and then adjust the controls as follows Power switch OFF Volume Control Full Counterclockwise Power switch of power supply Fixed station OFF SQ Control Full Counterclockwise 2 Turn on the Power Supply and then tur...

Page 16: ...and the BUSY indicator will turn ON 5 2 3 Frequency Step Selection The frequency step is indicated in the chart below VFO Mode Operation Frequency Selection 1 Press the VFO M V key to select the VFO mode 2 Rotate the tuning control or press the microphone UP DN switches to select the desired frequency Memory Channel Selection 1 Press the MR M key 2 Rotate the tuning control or press the microphone...

Page 17: ...ly discussed 2 Press the LOW DIM key to select the desired transmit output 3 Check the frequency to see if it is occupied before you transmit 4 Press the PTT switch The TX indicator will light and the RF meter will deflect to the right If you have selected the LOW power position the indicator will appear in the display and the RF meter will only deflect full scale 5 Speak into the microphone The r...

Page 18: ...r using the following procedure 1 Turn the PWR switch off 2 Press and hold the MR M key and turn on the PWR switch 3 Release the MR M key VFO Initialization VFO Reset All the settings except the contents of the memory and call channel are initialized 1 Turn the PWR switch off 2 Press and Hold the VFO M V key then turn the PWR switch on 3 Release the VFO M V key AR 147 AR 247 VFO Memory channel 1 C...

Page 19: ...y Channel 12 is used to store the upper limit for the Programmable Band Scan function 5 4 5 Memory Entry Simplex Normal shift 1 Press the VFO M V key to select the VFO mode 2 Select the desired operating frequency offset tone frequency etc For example 145 500MHz 3 Press the F key The F indicator and a memory channel indicator will light For example CH8 4 Select the desired Memory Channel using the...

Page 20: ...emory channel or CALL channel data to the VFO This will allow you to recall and alter these frequencies without changing the actual contents of the memory or CALL channel 1 Press the MR M key or CALL key 2 Press the F key The F indicator will light 3 Press the VFO M V key within 10 seconds of pressing the F key The F indicator and the Memory or CALL channel indicator will turn off to signal the da...

Page 21: ...ory in the time operated scan mode To switch between the two modes use the following procedure 1 Press the F key for longer than 1 second The F indicator will flash 2 Within 10 seconds of pressing the F key And B indicator will be on This will toggle the Scan Resume mode to carrier operated mode Then press and hold the VFO M key for longer than 1second for scanning 3 To return to time operated mod...

Page 22: ...an 1 Press the F key for longer than 1 second and then pressing the CALL key to turn ON OFF the programming scan mode 2 THe lower scan limit must be stored in memory channel 11 The higher scan limit must be stored in memory channel 12 5 5 5 Memory Channel Scan 1 Adjust the SQ control to the threshold point 2 Press and hold the MR M key for longer than 1 second The SCAN indicator will turn on as a ...

Page 23: ...memory frequency under M1 2 Listen on the dial frequency and one of the memory frequencies 3 Listen on the dial frequency and a memory frequency under scanning Information The word DUAL is indicated on the display during Dual watch operation The dial frequency can be changed during dual watch operation During dual watch operation the Transceiver listens on a memory frequency once every three secon...

Page 24: ...uency and a memory frequency or call frequency 1 Recall a memory frequency you wish to use in the dual watch function 2 Press the F key momentarily The F indicator should light in the display 3 Press the TONE DUAL key within 10 seconds of pressing the F key A DUAL will appear on the display to indicate the Dual watch operation 4 The display will alternately indicate the dial frequency and a select...

Page 25: ...ne UP DN switches to select the desired offset frequency 4 Press the VFO M V key to select the VFO mode 5 7 2 Automatic Repeater Offset This function automatically selects an appropriate offset direction and offset frequency according to the operating frequency that you select The transceiver is programmed for offset direction as shown below To select the desired offset frequency use the following...

Page 26: ...sed The transceiver provides two types of subaudible tone CTCSS and DCS There are 50 selectable CTCSS tones and 106 selectable DCS codes for users A repeater access tone is also used in transmit Press and hold the PTT key to transmit then press the microphone CALL key will generate a repeater access tone During the repeater access tone being transmitted the CTCSS DCS sub audible tone is muted 5 7 ...

Page 27: ...34 631 606 051 032 225 122 411 226 632 624 053 452 226 411 412 143 654 743 054 413 243 351 413 054 662 466 065 271 244 025 423 315 664 311 071 306 245 072 431 723 703 565 072 245 246 523 432 516 712 114 073 506 251 165 445 043 723 431 074 174 252 462 446 255 731 155 114 712 255 446 452 053 732 261 115 152 261 732 454 266 734 371 116 754 263 205 455 332 743 654 122 225 265 156 462 252 754 116 125 3...

Page 28: ...played on the radio there will be no tone squelch control No indicator T T SQ DCS T DCS T SQ CTCSS Tone DCS Code Scan When useing CTCSS DCS encoding and decoding function you can have the transceiver scan through the tones or codes to determine which one is present on a received signal During CTCSS TONE DCS scan the PAG C SQ feature is disabled 1 Let the transceiver enter CTCSS DCS encoding and de...

Page 29: ...otating the Tuning control 8 Press the F key and the complete C SQ code is registered The mode returns to the previous one Selecting and Storing a code with the DTMF KEY PAD MIC 147 D 1 Press the DTMF key twice to light the C SQ indicator 2 Press the F key then press the DTMF key while the F indicator is on in 10 seconds The C SQ code setting mode will be entered and the first digit of the code wi...

Page 30: ...eater The PAG C SQ signal is transmitted after a short delay if the PTT switch is pressed This is to avoid any malfunction due to the PAG C SQ signal being interrupted by repeaters with long response time Transmit Delay during C SQ or PAG output A delay is built in when the C SQ or PAG code is sent out The initial setting is 450 ms and can be changed to 750 850 or 1000 ms Changing the delay time 1...

Page 31: ...MF Dual Tone Multi Frequency signaling The common group code and individual codes should be determined in advance These codes should be from 000 to 999 3digits Unlike C SQ the code of the calling station is displayed on the receiver so the receiver can identify the calling station When called by a local station the individual code of the calling station is displayed when called by a group code tha...

Page 32: ... The first digit will flash This operation is not necessary if DTMF microphone is used 5 Set the desired number with the tuning control and press the DTMF key or key 0 to 9 on the microphone with DTMF keypad The first digit be set and the second digit will flash PA Use Stores your individual ID code in memory P0 Automatically stores the calling station s code during reception Can temporarily set c...

Page 33: ...A 1 Turn to the predetermined frequency 2 Press the DTMF key to light the PAG indicator 3 Press the F key then press the DTMF key while the F indicator is on 4 Select the memory number in which the local station code is stored using the tuning control Turn the paging function of the other transceiver on Calling all station in the group ...

Page 34: ...1 are transmitted A DTMF tone sounds is heard during transmitting To call a specific station for example station 3 use the following procedure 1 Select the memory in which the local station code is stored in this example select memory p2 or Enter the individual code of the local station in memory 0 2 Press a key other than DTMF key to display the frequency again 3 Press the PTT switch Calling a sp...

Page 35: ...ion code can not be decoded Err appears on the display 1 When a call is received with the group code the squelches of all the members of the group are opened to enable reception When you are called with the group code the common group code and its memory channel number are displayed Example Group code 789 is stored in channel 3 2 When the PTT switch is pressed group code 789 as displayed and your ...

Page 36: ...tep 1 and 2 4 You can rotate the tuning control or press the microphone UP DN switches to select the desired DTMF code position 5 11 DTMF CODE DECODING FUNCTION The DTMF Code Decoding Function is available when the optional DTMF UNIT DTF147 is installed The Decoding Function is useful to display the receiving DTMF signal on the LCD with 16 Digits Maximum 5 11 1 Setting the CODE decoding mode 1 Pre...

Page 37: ...ialer operation turn on the display will show as follows Autodial Memory 1 empty Send DTMF Autodial Sequence 1 Turn the transceiver to DTMF autodialer operation 2 Press the PTT key the transceiver goes to transmission mode 3 In transmission mode press the VFO key on microphone The display will show the current autodial memory number and the first 4 DTMF codes 4 Press the UP DN key on microphone to...

Page 38: ...st significant one 4 If the number entered is other than 0 9 the bu sound is generated and the number is inhibited to be entered The out of band entered frequency is also inhibited 5 The entered frequency will be automatically modified for the least significant digits to match the current frequency step 5 14 APO Automatic Power Off The automatic power off function turns the power off automatically...

Page 39: ... the beep is turned on and off 5 17 LOCK There are two types of lock functions Microphone key lock When the switch on the rear of the microphone is set to the LOCK position all the microphone keys except the PTT key are disabled LOCK The panel keys except F and MHz LOCK and LOW key and the tuning control are disabled However the microphone function works Press the F key then press the MHz LOCK key...

Page 40: ... frequency display mode Performs the procedures 2 3 4 5 as indicated in 5 18 1 will return to the normal frequency display mode 5 19 AM RECEPTION AR 147 option only When the AM RECEPTION option is installed in the AR 147 it is able to receive AM signals within the frequency range of 118 000 to 135 995 MHz Air Band 1 Turn the transceiver to VFO display mode 2 Press the MHz key for longer than 1 sec...

Page 41: ...ODE 5 TONE PWR ON DUAL WATCH WITH MEMORY SCAN IN MEMORY SCAN MODE 6 LOW DIM TX POWER LEVEL SETTING H M L 7 F LOW DIM ILLUMINATION INTENSITY LEVEL SETTING 1 4 8 F 1Sec LOW DIM TOT TIME OUT TIMER ON OFF AND SETTING 1 3 5 10 30 Minutes 9 VFO 1Sec VFO SCAN 10 F VFO CALL MR DATA TRANSFERRED TO VFO CHANNEL 11 F 1Sec VFO TX OFFSET FREQ SETTING 12 MR 1Sec MEMORY SCAN 13 F MR SAVE DATA TO MEMORY CHANNEL 14...

Page 42: ...F DTMF MR SAVING DTMF DECODING CODES TO EEPROM IF NOT IN PAG C SQ MODE 32 F DTMF MHz CLEARDTMFDECODINGCODESBUFFER IF NOT IN PAG C SQ MODE 33 F DTMF 1Sec DTMF AUTODIALER ON OFF DTMF AUTODIAL MEMORY SETTING EACH MEMORY COULD CONTAIN 16 DTMF CODES MAXIMUM WITH 9 INDIVIDUAL MEMORIES ROTARY SW OR MIC UP DN KEY SELECT MEMORY MHz KEY DTMF CODE SETTING DTMF KEY DTMF CODE VIEW 34 F 1Sec DTMF BEEF ON OFF 35...

Page 43: ...it in its original box and packing and include a full description of the problems involved Please include your daytime telephone number You need not return accessory items unless directly related to the service problem Service note Dear OM if you desire to correspond on a technical or operational problem please make your note short complete and to the point and please make it readable Please list ...

Page 44: ...ed too dark Poor antenna connection 1 Plug jack in 2 Connect antenna securely Connect antenna securely 1 Check voltage for 13 8 VDC 15 2 Press the F key and the LOW DIM key select the desired dimmer value Press the MHz LOCK key within ten seconds of pressing the F key The lock is on action 1 Check cables and connections 2 Check for the cause of the blown fuse and replace the fuse 1 Turn the SQ con...

Page 45: ...tery or damage may occur the equipment 3 Remove the backing from the small cushion provided with the DTF147 and attach it to the back of the DTF147 4 Plug the three connectors into the sockets in the units 5 Attach the cable from DTF147 as shown in Fig 2 Fig 1 Fig 2 6 Replace the cover and tighten the screws to complete the installation Installing DTF147 Attach this unit on the top of VCO shield F...

Page 46: ...uld be returned in its original packing and with proof of the date of the original retail purchase to your dealer for warranty service The warranty does not cover accident misuse fire flood and other Act of God unauthorized repair or altered serial numbers Some statutory regulations do not allow for the exclusion or limitation of incidental or consequential damages nor allow limitations on how lon...

Page 47: ...and are registered trademark of ADI Communications Corporation NX255A038E ...

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