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1. INTRODUCTION 

INTRODUCTION 

The Zetron Model 38 is a flexible repeater panel that provides individualized repeater service 
to up to 60 or 68 different customer groups. It is a complete interface between a transmitter 
and receiver, providing CTCSS encode/decode, repeat audio processing, and all timer 
functions. It can be remote-controlled from a variety of sources. The Model 38A is equipped 
with an RS-232 serial port for connection to computers and modems. An internal database 
keeps track of all airtime use and, for accounting purposes, downloads into a PC. Nearly all 
of the Model 38’s functions can easily be customized for each of the 38 or 50 CTCSS tones 
and 22 or 18 digital coded squelch codes.  

FEATURES 

• 

Supports 38 or 50 CTCSS user groups, with ToneLock™ high sensitivity decoding 

• 

Supports 18 or 22 digital coded squelch (DCS) codes 

• 

Programmable via RS-232 and DTMF  

• 

Attributes are programmable for each user group 

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Remote enable and disable of all tones and DCS codes 

• 

Temporary enable and disable of cross encoding 

• 

Automatic Morse code station identification 

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Stuck microphone timeout and identification 

• 

DTMF paging when site alarm triggered 

• 

Vacant tones and codes can be reserved 

• 

Airtime Hog Penalty mode 

• 

Cross-tone, cross-code, tone-code encoding 

• 

Courtesy beeps and tailbips 

• 

Privacy mode to prevent “barge-ins” 

• 

Airtime is tallied for each user group 

• 

Prepaid airtime feature 

Содержание 38A

Страница 1: ...ZETRON Model 38A Repeater Tone Panel Instruction Manual Part No 025 9043Y Please check for change information at the end of this manual Copyright 1986 1999 by Zetron Inc All Rights Reserved...

Страница 2: ...atter consisting of Title Page Table of Contents 3 pages Statements 3 pages Other special pages 1 pages Correctly printed photos on Page Page Page Page Last page in each section 1 1 6 10 2 2 7 7 3 13...

Страница 3: ...imeout Timer 3 5 Timeout User Identification 3 5 DTMF Regeneration 3 5 Airtime Hog Penalty 3 6 Temporary Cross tone or Cross code Encoding 3 6 Temporary Defeat of Cross tone or Cross code Encoding 3 6...

Страница 4: ...5 13 Kenwood TKR 720 TKR 820 Repeater 5 14 Motorola GR300 Repeater or Two GM300 Radios 5 15 Motorola MTR2000 Stations 5 16 Motorola MSF 5000 Analog Repeater 5 17 Motorola MSF 5000 Digital Repeater 5...

Страница 5: ...MF REMOTE PROGRAMMING MODE NOTES 7 1 MODEL 38 SYSTEM PROGRAMMING LOG 7 2 MODEL 38 CTCSS USER DATABASE PROGRAMMING LOG 7 4 MODEL 38 DCS USER DATABASE PROGRAMMING LOG 7 6 MODEL 38 PROGRAM MODE COMMAND S...

Страница 6: ...functions can easily be customized for each of the 38 or 50 CTCSS tones and 22 or 18 digital coded squelch codes FEATURES Supports 38 or 50 CTCSS user groups with ToneLock high sensitivity decoding S...

Страница 7: ...djustable 800 Hz per FCC rules Courtesy tone frequency 1 000 Hz adjustable 400 to 3 000 Hz Indicators Power carrier transmit decode encode DTMF Current consumption 350 mA at 13 8 VDC Operating voltage...

Страница 8: ...oise detector or external carrier detect input External input threshold adjustable 0 to 7 VDC Adjustments Four adjustments from rear panel Rx input gain CTCSS DCS encode gain Tx audio output gain and...

Страница 9: ...S decoder bandwidth than the standard 38 tone version The 50 tone version is not recommended for use with radios that use tunable encoders due to the possibility of the encoder becoming mistuned or dr...

Страница 10: ...ONES CODES ARE ENABLED User Validation The Model 38 is always listening to the receive audio for the presence of an enabled user All 38 or 50 CTCSS tones and 18 or 22 of the digital codes can be marke...

Страница 11: ...A MOBILE UNKEYS When a mobile unkeys CTCSS tone or DCS code is no longer detected the Model 38 will do the following Anti Kerchunker Filter The anti kerchunker filter cancels the transmit hold time a...

Страница 12: ...tch to know when the mobile has unkeyed as opposed to knowing when the repeater has dropped off the channel When using the repeater for dispatch only the encode may be left on during the Tx hold time...

Страница 13: ...e the second squelch tail heard by the mobiles when the repeater transmitter unkeys Repeater tailbips may be enabled to beep once every second during the repeater hold time Timeout Timer While mobiles...

Страница 14: ...MF command sequence and can be enabled disabled on a per user basis An alert signal is sent during the transmitter hang time while the temporary cross tone or cross code mode is active Command sequenc...

Страница 15: ...nded then the programmed CTCSS tone or DCS code will be encoded the repeat audio squelched and the transmitter keyed This condition will continue until the site alarm input is released This feature ca...

Страница 16: ...bile does not unsquelch use the Model 38 digital encode invert selection The mobile should unsquelch on either the normal or inverted code 3 Set the transmitter CTCSS DCS encode deviation using a CTCS...

Страница 17: ...0100110010 264AAE 143 01101111010100001100011 630AF6 464 01001111110100100110100 164BF2 145 01010101110100001100101 530BAA 465 11000001011100100110101 564E83 152 00111101100100001101010 2B09BC 466 110...

Страница 18: ...073 065 271 263 205 516 432 071 306 265 156 523 246 072 245 266 454 526 325 073 506 271 065 532 343 074 174 274 145 546 132 114 712 306 071 565 703 115 152 311 664 606 631 116 754 315 423 612 346 122...

Страница 19: ...S 02 Mobile to dispatcher call Rx CTCSS 01 Tx 01 Rx 02 Tx CTCSS 02 In this mode the dispatcher can communicate with the fleet but the fleet can not hear each other In order for talkthrough to be used...

Страница 20: ...ion Off 12 Hog limit 0 12 Hog limit 0 13 Prepay mode Off 13 Prepay mode Off 14 Airtime 000 00 00 14 Airtime 000 00 00 15 Aux relay Off 15 Aux relay Off Table 3 6 RFW System Programming System Programm...

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