background image

38

39

CTCSS TONE FREQUENCY (Hz)

67.0

8.25

100.0

123.0

151.4

171.3

189.9

210.7

250.3

69.3

85.4

103.5

127.3

156.7

173.8

192.8

218.1

254.1

71.9

88.5

107.2

131.8

159.8

177.3

196.6

225.7

-

74.4

91.5

110.9

136.5

162.2

179.9

199.5

229.1

-

79.7

97.4

118.8

146.2

167.9

186.2

206.5

241.8

-

77.0

94.8

114.8

141.3

165.5

183.5

203.5

233.6

-

DCS CODE

023

025

026

031

032

036

043

047

050

051

053

054

065

071

072

073

074

114

115

116

122

125

131

132

134

143

145

152

155

156

162

165

172

174

205

212

223

225

226

243

244

245

246

251

252

255

261

263

265

266

271

274

306

311

315

325

331

332

343

346

351

356

364

365

371

411

412

413

423

431

432

445

446

452

454

455

462

464

465

466

503

506

516

523

526

532

546

565

606

612

624

627

631

632

645

654

662

664

703

712

723

731

732

734

743

754

-

-

-

-

-

-

Summary of Contents for AHT-28-V

Page 1: ...unctions It is designed to meet different customers need for high quality with easy operation and perfect capablity We believe you are pleased with its nice shape and excellent performance This manual...

Page 2: ......

Page 3: ...FM radio and 25 stations memory Wide Narrow band selectable VOX 0 9 grade setting Chinese English voice prompt CTCSS DCS and scanning 1750Hz tone ANI function Shortcut menu operation mode Emergency al...

Page 4: ......

Page 5: ...ual Wait Standby LED Display Mode Background Light Color Keypad Beeper setting Automatic Number Identity Transmitter Time Out Timer Busy Channel Lock Out Transmit Over Beeper Dual Watch Monitor Receiv...

Page 6: ......

Page 7: ...User s Manual USING TIPS UNPACKING AND CHECKING EQUIPMENT www maas elektronik com...

Page 8: ......

Page 9: ...03 UNPACKING AND CHECKING EQUIPMENT Transceiver 1 Supplied Items to use AHT 28 V AHT 78 U...

Page 10: ......

Page 11: ...05 CHARGING BATTERY PACK 1600 7 4V Charging Precaution...

Page 12: ......

Page 13: ...ery pack into the batter pack trough then slide it toward the head to insert it completely in direction of arrowhead Picture 1 Push the battery pack lock to release the battery pack and slide it towar...

Page 14: ......

Page 15: ...09 Picture 5 Picture 6 SP M IC PUSH SP M IC PUSH Installing Belt Clip...

Page 16: ......

Page 17: ...User s Manual GETTING FAMILIAR www maas elektronik com...

Page 18: ......

Page 19: ...Press it to transmit and release it to receive after your transmission is completed MONI Press this key disables the noise squelching action allowing you to hear very weak signals near the back ground...

Page 20: ......

Page 21: ...indicator CTCSS decoder active DCS decoder active 5 Tone signaling active 2 Tone signaling active DTMF signaling active Operating A band indicator Operating B band indicator Frequency mantissa indica...

Page 22: ......

Page 23: ...0 Enter dual wait standby item Enter LED item Enter color item Enter beep item Enter ANI item Press key Left cursor position when editing channel name Right cursor position when editing channel name E...

Page 24: ......

Page 25: ...odel version information when you switch the transceiver power on DTMF and 2 5 TONE version will be with remote kill stun activate revive function Only 2 5 TONE version will be with 8 groups of scramb...

Page 26: ......

Page 27: ...tal Please see SET MENU MODE Page 22 6 Reset Mode Press key and switch the power on to enter Reset mode then press key to enter 1 or key to select VFO FULL 2 VFO initialize all setting under frequency...

Page 28: ......

Page 29: ...on of Function Available Values 23B 24 25 26 27 28 29 DIS NM CHNAME C CDC R CDC T CDC S D STEP Display Channel Name Channel Name Editing TX RX Tone coder RX Tone coder TX Tone coder Shift Direction VF...

Page 30: ......

Page 31: ...ble values VOX level 1 8 Press or to select available values High Low Press or to select available values SQL level 0 9 Press or to select available values ON OFF Press or to select available values O...

Page 32: ......

Page 33: ...l name editing 24 TX RX tone coder 25 Press or to select available values ON OFF Press or to select available values OFF DC MSG Press or to select available values Show current voltage Press or to sel...

Page 34: ......

Page 35: ...User s Manual DETAILED FUNCTION DESCRIPTIONS ADVANCED FUNCTIONS www maas elektronik com...

Page 36: ......

Page 37: ...atic transmit receive switching based on voice input to the microphone With the VOX switch ON you do not need to press PTT switch in order to transmit and it is not necessary to use a VOX headset in o...

Page 38: ......

Page 39: ...MENU 8 Functions choose LED background light color Enter Menu 8th to select background light color Default COLOR1 COLOR1 Purple COLOR2 Blue COLOR3 Orange 9 Keypad Beeper setting BEEP MENU 9 Functions...

Page 40: ......

Page 41: ...h to set RX SAV Default OFF 16 Auto Keypad Lock AUTOLK MENU 18 Functions in order to prevent accidental frequency change or inadvertent transmission various aspects of the transceiver s keys and switc...

Page 42: ......

Page 43: ...SEEK 67 0 D023N MENU 25 26 27 31 32 Function 1 CTCSS DCS Operation Many repeater systems require that a very low frequency audio tone be superimposed on your FM carrier in order to activate the repea...

Page 44: ......

Page 45: ...5 152 155 156 162 165 172 174 205 212 223 225 226 243 244 245 246 251 252 255 261 263 265 266 271 274 306 311 315 325 331 332 343 346 351 356 364 365 371 411 412 413 423 431 432 445 446 452 454 455 46...

Page 46: ......

Page 47: ...ns only 2 5 tone version has this function The transceiver has 8 groups of scrambler it is accomplished by the addition of com ponents to the original signal in order to make extraction of the origina...

Page 48: ......

Page 49: ...exit KEYPAD LOCK SETTING Under standby mode press for 2S to lock or unlock the keypad will be displayed at the top of LCD when keypad is locked REVERSE FREQUENCY ON OFF Under standby mode press for 2...

Page 50: ......

Page 51: ...7 Press or to choose or input 05 directly 8 Press for storage LCD displays MR mode and currently stored channel Channel delete 1 Under MR or CH mode press to turn on the radio LCD displays DEL and cha...

Page 52: ......

Page 53: ...see DEL in the screen and the channel number blinks press or to choose the channel number you want to delete press to confirm Repeat this operation you can delete all memory channel 25 in maximum Prep...

Page 54: ......

Page 55: ...User s Manual OPTIONAL SIGNALINGS REMOTE KILL STUN ACTIVATE AND REVIVE www maas elektronik com...

Page 56: ......

Page 57: ...the desired code into the corresponding list 16 characters in maximum Step 3 Choose the desired DTMF decoder from available values Code Squelch Picture 1 and Selective Call Picture 2 Step 4 Choose the...

Page 58: ......

Page 59: ...e corresponding to the one in the CallList e g if ID code is 1234 the corresponding callList is Group 1 Picture 3 Picture 3 Step 4 Set the optional signal of the desired channel to be MSK Click More a...

Page 60: ......

Page 61: ...As single tone calling only input A Tone e g A Tone is 1750 Hz no need to input in another Tone The Tone in Group Call should be the same to the Tone of encoder 900 3MHz Step 3 Set the optional signal...

Page 62: ......

Page 63: ...editing desired 5tone and then write into the radio Click More after the channel needed editing to enter setting Select 5tone in the Optional signal and then select the List Num want to call and clic...

Page 64: ......

Page 65: ...e kill status and enter normal operation In this situation the radio only can be revived by programming software the method is as follows read data from radio first and then click program Optional Fea...

Page 66: ......

Page 67: ...ansmit e g the Remote stun code for radio A is 1234567 revive code is 2345678 remote kill one is 7654321 If you want to remote stun it please use another one radio B to input the working frequency of...

Page 68: ......

Page 69: ...User s Manual TECHNICAL PARAMETERS www maas elektronik com...

Page 70: ......

Page 71: ...itter RF Sensitivity Audio power Audio Distortion Intermediation Selectivity Spurious Rejection Blocking Receiver 65 Note Specification will be revised without notice due to technical improvement Than...

Page 72: ......

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