ZETRON 37-MAX Installation Manual Download Page 69

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Section 6. Repair

6-3

MODEL 37-MAX REPEATER PAL (702-9808A)

Parts List

LEGEND:

# = NOT INSTALLED

^ = INSTALLED ON HIGHER ASSY

+ = OPTION (INSTALLED PER CUSTOMER ORDER)

ITEM QTY COMPONENT REFERENCE PART NO. DESCRIPTION PART REFERENCE

------------------------------------------------------------------------------------------------------------------------------

1 0 R45# 101-0015 3.3 OHM 1/4W 5% CARBON FILM

2 1 R67 101-0025 10 OHM 1/4W 5% CARBON FILM

3 1 R23 101-0033 22 OHM 1/4W 5% CARBON FILM

4 2 R38,R60 101-0047 47 OHM 1/4W 5% CARBON FILM

5 1 R44 101-0049 100 OHM 1/4W 5% CARBON FILM

6 5 R61,R64,R72,R73,R74 101-0057 220 OHM 1/4W 5% CARBON FILM

7 0 R50# 101-0059 270 OHM 1/4W 5% CARBON FILM

8 1 R65 101-0061 330 OHM 1/4W 5% CARBON FILM

9 2 R15,R16,R47# 101-0065 470 OHM 1/4W 5% CARBON FILM

10 2 R8,R39 101-0066 510 OHM 1/4W 5% CARBON FILM

11 7 R6,R10,R14,R19,R51,R62, 101-0073 1.OK 1/4W 5% CARBON FILM

R75

12 1 R43 101-0083 2.7K 1/4W 5% CARBON FILM

13 1 R29 101-0085 3.3K 1/4W 5% CARBON FILM

14 1 R22 101-0089 4.7K 1/4W 5% CARBON FILM

15 0 R56# 101-0091 5.6K 1/4W 5% CARBON FILM

16 3 R17,R18,R59 101-0092 6.2K 1/4W 5% CARBON FILM

17 1 R5 101-0094 7.5K 1/4W 5% CARBON FILM

18 6 R13,R24,R63,R66,R68,R79 101-0097 10K 1/4W 5% CARBON FILM

19 1 R52 101-0103 18K 1/4W 5% CARBON FILM

20 2 R21,R32,R46#,R48#,R49# 101-0105 22K 1/4W 5% CARBON FILM

21 1 R11 101-0109 33K 1/4W 5% CARBON FILM

22 2 R7,R55#,R57 101-0113 47K 1/4W 5% CARBON FILM

23 1 R9 101-0114 51K 1/4W 5% CARBON FILM

24 2 R41,R36 101-0117 68K 1/4W 5% CARBON FILM

25 1 R40 101-0119 82K 1/4W 5% CARBON FILM

26 12 R26,R27,R30,R31,R34,R37, 101-0121 100K 1/4W 5% CARBON FILM

R53,R70,R71,R76,R77,R80

27 1 R58 101-0123 120K 1/4W 5% CARBON FILM

28 1 R25 101-0129 220K 1/4W 5% CARBON FILM

29 2 R4,R20 101-0131 270K 1/4W 5% CARBON FILM

30 3 R28,R54,R69 101-0145 1.0M 1/4W 5% CARBON FILM

31 1 R78 101-0149 1.5M 1/4W 5% CARBON FILM

32 1 R33 101-0150 2.7M 1/4W 5% CARBON FILM

33 1 R3 107-0003 2K POT 1 TURN R/A

34 2 R1,R2 107-0015 50K POT 1 TURN R/A

Summary of Contents for 37-MAX

Page 2: ...ntial damages or losses to the buyer or any third party arising out of or connected with the buyer s purchase and use of Zetron s products or services FEDERAL COMMUNICATIONS COMMISSION FCC REGULATIONS...

Page 3: ...emark of Motorola Inc Private Line and PL are trademarks of Motorola Inc ToneLock is a trademark of Zetron Inc Touch Tone is a registered trademark of American Telephone and Telegraph Company Zetron i...

Page 4: ...s doing A warble or dee doo dee doo dee doo tone indicates an invalid command or that an error condition exists A chirp or bip bip bip bip bip five quick notes indicates the proper completion of a co...

Page 5: ...ral 2 1 User Specific 2 2 Installation Aids 2 2 3 OPERATION 3 1 OVERVIEW 3 1 USERS VERSUS CTCSS DCS DECODE 3 1 USER OPERATION ISSUES 3 2 Disabled Users 3 2 Enabled Users 3 2 Carrier Only Repeat 3 3 Re...

Page 6: ...Timer Stuck Mic 4 5 Station ID Parameters 4 5 Station ID Call Sign 4 6 Courtesy Tone Frequency 4 6 Program Mode Access Code 4 7 DCS Encode Polarity 4 7 DCS Decode Polarity 4 7 Exit the Program Mode 4...

Page 7: ...ctions to a Motorola R100 Repeater Station 5 20 Connections to a Motorola MSF5000 Analog Base Repeater 5 21 Connections to a Motorola MSF5000 Digital Base Repeater 5 22 Connections to a Motorola MSR20...

Page 8: ...INTRODUCTION 1 1 OVERVIEW 1 1 Complete CTCSS DCS Coverage 1 1 Features You Expect in a Zetron Panel 1 1 Programming and Control 1 2 Installation and Setup 1 2 FEATURE SUMMARY 1 2 USING THIS MANUAL 1...

Page 9: ...tron feature that eliminates dropouts resulting from weak fading signals or high modulation levels The usable range of the repeater is not limited by the decode performance of the repeater tone panel...

Page 10: ...radio This programming method was chosen for two very good reasons First because it doesn t require the installer or maintenance technicians to have special equipment in order to program the repeater...

Page 11: ...lar radios USING THIS MANUAL While this manual was not written to be read from cover to cover it is highly recommended that you review Sections 3 and 5 before starting to work with the unit Depending...

Page 12: ...commands and tables of tone frequencies and DPL codes showing their relationship to user numbers 6 REPAIR Contains low level hardware information such as parts lists schematics and component layout si...

Page 13: ...2 SPECIFICATIONS 2 1 GENERAL SPECIFICATIONS 2 1 RADIO INTERFACE SPECIFICATIONS 2 1 ADDITIONAL SPECIFICATIONS 2 1 PROGRAMMABLE FUNCTIONS 2 1 General 2 1 User Specific 2 2 Installation Aids 2 2...

Page 14: ...io 40 to 10 dBm Hi Lo range selector 25 k input impedance CTCSS DCS encode 40 to 3 dBm Hi Lo range selector 600 output impedance CTCSS slope Flat or de emphasized output ADDITIONAL SPECIFICATIONS Indi...

Page 15: ...ay customers Regenerated CTCSS DCS Selectable encode may be any CTCSS or DCS programmable per user TX Hold Time Normal or Alternate transmit hold time selection Tone in Tail Enable or disable CTCSS DC...

Page 16: ...Users 3 3 Tone Translation 3 4 NORMAL OPERATION 3 4 Carrier is Detected 3 4 Valid Tone or Code is Detected 3 4 Repeater Hold Time 3 5 Encode During Repeater Hold Time 3 5 Transmitting Morse Code Stati...

Page 17: ...all 50 CTCSS tones and 104 of the DCS codes flexibility of configuration at a level that would be difficult to provide for even half as many users if physical switches or jumpers were required to con...

Page 18: ...J4 50 254 1 J9 USER OPERATION ISSUES A short list of topics related to the setup and configuring of the users needs to be covered before discussing normal tone panel operations Disabled Users The defa...

Page 19: ...565 70 122 225 96 261 732 122 446 255 148 712 114 71 125 365 97 263 205 123 452 053 149 723 431 72 131 364 98 265 156 124 454 266 150 731 155 73 132 546 99 266 454 125 455 332 151 732 261 74 134 223...

Page 20: ...operating in its normal mode The actions of the Model 37 MAX will be determined by both which features have been enabled in programming and what signals are coming to it from the receiver Carrier is...

Page 21: ...e entire repeater hold time A common one would be to support the use of radios that had a busy channel lock out feature enabled in them This would both prevent new tones from interrupting conversation...

Page 22: ...irtime wasted with both parties to a conversation waiting because they were all uncertain whether the speaker has actually unkeyed and is waiting for a response The Courtesy Beep feature was developed...

Page 23: ...the decoder will see the inverted code and fail to provide a valid decode output This problem can arise going in either direction the panel can fail to decode the DCS sent by the radio user or the ra...

Page 24: ...mode the panel will retain all of its programming but it will not function and service the valid radio users until the technician enters and exits the programming mode again or the main power is cycl...

Page 25: ...ne 4 4 SYSTEM PROGRAMMING COMMANDS 4 4 TX Hold Time Duration 4 5 Repeater Time out Timer Stuck Mic 4 5 Station ID Parameters 4 5 Station ID Call Sign 4 5 Courtesy Tone Frequency 4 6 Program Mode Acces...

Page 26: ...ccess code decoded by the 37 MAX is invalid then the panel will ignore the attempt Manually Resetting the Access Code There are a number of ways in which the Program Mode Access Code in use can be ren...

Page 27: ...ng the next command entry If the next command is not received within 60 seconds of the last command the 37 MAX will exit the programming mode and return itself to the normal idle condition CLEARING PR...

Page 28: ...that will be decoded when that user is enabled By default a user will encode the same tone or code that it decodes but this is not a fixed relationship The encode output of any user can be programmed...

Page 29: ...User uu default 131 uu Reserve Mode Enabled for User uu Courtesy Tone The Courtesy Tone is a beep prompt transmitted by the 37 MAX every time it detects that the mobile which was transmitting has unk...

Page 30: ...et to only ID when the timer has expired and there has been some activity on the channel either during the timer period or since it timed out The alternative mode is for the panel to go ahead and ID w...

Page 31: ...default frequency is 1000 Hz 244 Set Courtesy Tone Frequency to 500 Hz 245 Set Courtesy Tone Frequency to 1000 Hz default 246 Set Courtesy Tone Frequency to 1500Hz Program Mode Access Code The Program...

Page 32: ...e This may be necessary to make the transmitted data stream look correct for the decoders in the mobiles using the system 215 DCS Encode set to Normal Polarity default 216 DCS Encode set to Inverted P...

Page 33: ...alues This command can be used to zero out a unit that is in some unknown condition so that programming it can proceed from a known defined state 391 Reset all Programming to Factory Default Values TX...

Page 34: ...ation The test is terminated by sending a to the panel 395 CTCSS Encode Test CTCSS Frequency Response Test This test is used to determine how flat the encode deviation level is across the entire range...

Page 35: ...ternate Hookup 5 15 Connection to an EF Johnson CR1000 5 16 Connection to a Kenwood TKR720 TKR820 5 17 Connections to a Midland Basetech Repeater 5 18 Connections to a Motorola GR300 GR500 Repeater St...

Page 36: ...X though the top cover will need to be removed during the initial installation to allow the technician to check and set the positions of various jumpers The Installation Procedure in the beginning of...

Page 37: ...wire from J1 pin 2 GND of the Model 37 MAX to the chassis ground of the transmitter receiver 3 Transmitter PTT Connect a wire from J1 pin 7 PTT of the Model 37 MAX to the PTT input of the transmitter...

Page 38: ...Initial Receiver Audio Level Using a DTMF equipped mobile radio or portable set to the repeater s receive frequency transmit all of the DTMF tones Adjust the potentiometer R2 RX LVL so that the Statu...

Page 39: ...deviation move the jumper JP2 LO HI to the opposite position and try again Enter a DTMF to exit this test 7 CTCSS Pre Emphasis Test Enter the DTMF command 396 to start the CTCSS pre emphasis test Afte...

Page 40: ...Repeat Audio Mode no tones from the 37 MAX 4 Transmit Audio Level Set the deviation level of the 1 kHz tone being transmitted by the tone panel to 60 of full channel deviation example 3 kHz deviation...

Page 41: ...el Supply a full quieting signal with a test tone of known deviation on the receive frequency of the repeater Adjust R2 RX LVL not R3 TX LVL for unity gain through the repeater This means that the dev...

Page 42: ...Generic Radio Cable part 709 7179 was used to do the interface however the same information will still be very useful to any technician that is making up a cable on site The repeaters covered here are...

Page 43: ...CSS DCS Encode 10 GREEN P3 14 CTCSS Encode MASTER III Configuration The connectors for P2 P3 P4 and P5 are located on the Master III backplane 1 Cut the printed circuit foil at JP 1 on the T R Shelf s...

Page 44: ...CAS CTCSS DCS Encode 10 GREEN J933 pin 3 CG Hi GE Master II Configuration Two versions of the GE Master II Repeater Control Panel exist The earlier version is identified by multiple plug in cards the...

Page 45: ...spare 6 N C PTT Output 7 ORANGE System Audio Squelch board J911 PTT Ground 8 BROWN Exciter board P902 pin 5 Mic Lo COR Input 9 YELLOW System audio squelch J912 CAS CTCSS DCS Encode 10 GREEN Exciter b...

Page 46: ...udio Output 5 BLUE H36 Tone Hi Ground spare 6 N C PTT Output 7 ORANGE J907 pin 10 PTT Ground 8 BROWN Ground trace COR Input 9 YELLOW J913 pin 4 CAS CTCSS DCS Encode 10 GREEN J907 pin 6 CG Hi GE EXEC I...

Page 47: ...PLR HI Ground 4 BRAID No connection TX Audio Output 5 BLUE J902 Pin 2 MIKE HI mic connector Ground spare 6 N C PTT Output 7 ORANGE TB502 Pin 10 XMIT Ground 8 BROWN COR Input 9 YELLOW TB502 Pin 16 COS...

Page 48: ...es 12 volts DC 1 RED J2 23 15_ACC Ground 2 BLACK J2 21 Ground Discriminator Input 3 WHITE J2 2 WB_DISC Ground 4 BRAID No connection TX Audio Output 5 BLUE J2 5 TX_AUDIO Ground spare 6 N C PTT Output 7...

Page 49: ...gic Drawer pin 19 fast squelch TX Audio Output 5 BLUE 56 k Logic Drawer pin 18 TX Tone CG CTCSS DCS Encode 10 GREEN 15 k Logic Drawer pin 18 TX Tone CG CR1010 Configuration 1 Remove the brown wire fro...

Page 50: ...pin 19 Fast Squelch CTCSS DCS Encode 10 GREEN Logic Drawer pin 18 TX Tone CG CR1010 Configuration Alternate Hookup 1 Remove the brown wire from the receiver going to the exciter transmit audio pin 1 N...

Page 51: ...d pin 11 Ground 4 BRAID No connection TX Audio Output 5 BLUE Level Adjust Card pin 18 Ground spare 6 N C PTT Output 7 ORANGE Level Adjust Card pin 19 Ground 8 BROWN Ground COR Input 9 YELLOW Level Adj...

Page 52: ...2 LG this is the PTT Enable jumper Place the second from pin 9 SI to pin 12 SO this is the Speaker Enable jumper 2 Set the repeater s front panel switches to TAKEOVER Off Disabled REPEAT Off Full Dupl...

Page 53: ...End Function J1 pin Wire Color Radio End Connection Notes 12 volts DC 1 RED Pin 1 12 6 V Ground 2 BLACK Pin 8 Ground Discriminator Input 3 WHITE Pin 3 RX Disc Ground 4 BRAID No Connection TX Audio Ou...

Page 54: ...Ground 8 BROWN AUX pin 9 Emergency Alert CTCSS DCS Encode 10 GREEN AUX pin 5 Flat TX Audio Radius GM300 Radio Configuration 1 On both Accessory Connectors a black wire jumper connects pins 15 Interna...

Page 55: ...umper from U551A pin 4 on the RX Command Board to JAUX pin 25 This routes unfiltered discriminator audio from the receiver to the 37 MAX 3 Program the R 100 for carrier squelch operation and disable r...

Page 56: ...2 BLACK J800 Pin 7 Pin 8 or TB601 GND on Power Supply Discriminator Input 3 WHITE Test Point 3 3 kHz 1Vpp Ground 4 BRAID No connection TX Audio Output 5 BLUE 33 k U834 Pin 13 1 Vpp 3 kHz Ground spare...

Page 57: ...Ground spare 6 N C PTT Output 7 ORANGE SW800 the pin closest to the outside edge of the PCB Ground 8 BROWN COR Input 9 YELLOW U1552 pin 1 CTCSS DCS Encode 10 GREEN 33 k U831 pin 3 Motorola MSF 5000 D...

Page 58: ...nds of both diodes joined to Orange wire anodes unbanded connected to Squelch Gate pin 3 and Squelch Gate pin 18 Ground 8 BROWN No connection COR Input 9 YELLOW Audio Squelch pin 20 CTCSS DCS Encode 1...

Page 59: ...BROWN No connection COR Input 9 YELLOW J2 pin 5 RX Unsquelch CTCSS DCS Encode 10 GREEN 10 k Resistor goes on radio end connects to J5 pin 27 Motorola MICOR Connection 1 Remove all modules except Stati...

Page 60: ...pin 4 13 8 V Ground 2 BLACK Multitone pin 5 Ground Discriminator Input 3 WHITE Multitone pin 2 DISC Ground 4 BRAID No connection TX Audio Output 5 BLUE Control pin 9 MIC HI Ground spare 6 N C PTT Outp...

Page 61: ...IN Ground spare 6 N C PTT Output 7 ORANGE pin 9 TX Key Line Ground 8 BROWN pin 4 TX Line IN Ground COR Input 9 YELLOW pin 8 Squelch Output CTCSS DCS Encode 10 GREEN pin 6 CTCSS Input Standard RPT30 Co...

Page 62: ...B1 5 TX LINE Ground spare 6 N C PTT Output 7 ORANGE TB1 12 TX KEY Ground 8 BROWN TB1 8 ground COR Input 9 YELLOW TB1 11 RX GATE CTCSS DCS Encode 10 GREEN TB2 9 CTCSS Tait T800 Configuration 1 Make up...

Page 63: ...UE Pin 7 TX AF Ground spare 6 N C PTT Output 7 ORANGE Pin 10 TX Key Ground 8 BROWN No connection COR Input 9 YELLOW Pin 20 RX GATE see Note 2 CTCSS DCS Encode 10 GREEN Pin 2 CTCSS ENCODE Tait T300 Con...

Page 64: ...GE Pin 3 Ground 8 BROWN No connection COR Input 9 YELLOW Pin 2 CTCSS DCS Encode 10 GREEN Pin 9 Uniden ARU 251 Configuration 1 At the radio s accessory jack install a jumper wire between pin 7 and pin...

Page 65: ...Ground 8 BROWN Pin 8 COR Input 9 YELLOW Pin 2 CTCSS DCS Encode 10 GREEN Pin 9 Uniden ARU 251K Configuration 1 Install a wire jumper on the accessory jack between pin 4 and pin 5 Audio Amp Out to Speak...

Page 66: ...6 REPAIR 6 1 IN CASE OF DIFFICULTY 6 1 Service Notes 6 1 MODEL 37 MAX REPEATER PAL ASSEMBLY 6 2 MODEL 37 MAX REPEATER PAL 702 9808A 6 3 Parts List 6 3 Schematic 6 6 Silkscreen 6 9...

Page 67: ...ocked up due a lightning hit or power line spike a microprocessor reset can be performed by sending any valid DTMF digit continuously for more than 20 seconds This removes the need to drive to the sit...

Page 68: ...IPS CASE 3 4 221 0108 440X1 4 PAN HD PHIL SEM PCB TO BOTTOM 4 1 265 0001 TY WRAP STD 5 1 265 0003 STRAIN RELIEF 6 1 401 0201 10 PIN x 156 HOUSING 7 10 402 0012 CON PINS TRIFURCON BAG 2X3 8 1 415 9094...

Page 69: ...0085 3 3K 1 4W 5 CARBON FILM 14 1 R22 101 0089 4 7K 1 4W 5 CARBON FILM 15 0 R56 101 0091 5 6K 1 4W 5 CARBON FILM 16 3 R17 R18 R59 101 0092 6 2K 1 4W 5 CARBON FILM 17 1 R5 101 0094 7 5K 1 4W 5 CARBON...

Page 70: ...50V 5 POLYESTER 52 1 C32 C30 154 0025 1 UF 35V TANTALUM 10 53 6 C17 C33 C37 C39 C45 C46 154 0100 10 UF 16V TANTALUM 10 54 2 C19 C28 155 0083 470 UF 10 VOLT RADIAL ALUMINUM ELECTROLYTIC 55 4 E1 E2 E3 E...

Page 71: ...1A 77 7 XJP1 2 3 4 6 POS A 402 3040 MINI JUMPER XJP5 2EA POS A 78 7 XU1 XU2 XU3 XU4 XU5 XU6 407 0008 SKT 08 PIN DIP XU8 79 2 XU9 XU11 407 0014 SKT 14 PIN DIP 80 1 XU10 407 0016 SKT 16 PIN DIP 81 1 XU7...

Page 72: ...Section 6 Repair 6 6 MODEL 37 MAX REPEATER PAL 702 9808A Schematic 1 3...

Page 73: ...Section 6 Repair 6 7 2 3...

Page 74: ...Section 6 Repair 6 8 3 3...

Page 75: ...Section 6 Repair 6 9 MODEL 37 MAX REPEATER PAL 702 9808A Silkscreen...

Page 76: ...APPENDIX A PROGRAMMING LOG A 1 OVERVIEW A 1 SYSTEM PROGRAMMING A 2 USER PROGRAMMING A 3...

Page 77: ...x can be copied and used as log sheets to record the programming done when a system is initially set up or at any time the programming is changed The programmable features are divided into System Prog...

Page 78: ...RVALS 233 STATION ID INTERVAL 0 to 90 minutes 15 minutes 235 STATION ID SENT AT 22 WORDS PER MINUTE 273 STATION ID SENT AT 11 WORDS PER MINUTE 274 STATION ID CALL SIGN 272 SET COURTESY TONE FREQUENCY...

Page 79: ...3 100 0 Hz 14 103 5 Hz 15 107 2 Hz 16 110 9 Hz 17 114 8 Hz 18 118 8 Hz 19 123 0 Hz 20 127 3 Hz 21 131 8 Hz 22 136 5 Hz 23 141 3 Hz 24 146 2 Hz 25 151 4 Hz 26 156 7 Hz 27 159 8 Hz 28 162 2 Hz 29 165 5...

Page 80: ...10 7 Hz 44 218 1 Hz 45 225 7 Hz 46 229 1 Hz 47 233 6 Hz 48 241 8 Hz 49 250 3 Hz 50 254 1 Hz 51 023 52 025 53 026 54 031 55 032 56 036 57 043 58 047 59 051 60 053 61 054 62 065 63 071 64 072 65 073 66...

Page 81: ...78 155 79 156 80 162 81 165 82 172 83 174 84 205 85 212 86 223 87 225 88 226 89 243 90 244 91 245 92 246 93 251 94 252 95 255 96 261 97 263 98 265 99 266 100 271 101 274 A User Enabled B Tone Translat...

Page 82: ...4 113 365 114 371 115 411 116 412 117 413 118 423 119 431 120 432 121 445 122 446 123 452 124 454 125 455 126 462 127 464 128 465 129 466 130 503 131 506 132 516 133 523 134 526 135 532 A User Enabled...

Page 83: ...12 140 624 141 627 142 631 143 632 144 654 145 662 146 664 147 703 148 712 149 723 150 731 151 732 152 734 153 743 154 754 A User Enabled B Tone Translation C Encode during TX Hold D No Encode During...

Page 84: ...ODE ACCESS Q 1 ENTERING A PROGRAM COMMAND Q 1 EXITING THE PROGRAM MODE Q 1 USER PROGRAMMING COMMANDS Q 2 User Numbers versus CTCSS Tones Q 3 User Numbers versus DCS Codes Q 4 SYSTEM PROGRAMMING COMMAN...

Page 85: ...id command sequence was received Some commands will require additional numbers be entered When it receives a command of this type the 37 MAX will respond with two quick beeps to indicate that it is wa...

Page 86: ...0 uu Encode Disabled During TX Hold for User uu default 121 uu Encode Enabled During TX Hold for User uu 123 uu Use Normal TX Hold Timer for User uu default 124 uu Use Alternate TX Hold Timer for User...

Page 87: ...3A 37 189 9 J6 4 74 4 WA 21 131 8 3B 38 192 8 7A 5 77 0 XB 22 136 5 4Z 39 196 6 J7 6 79 7 WB 23 141 3 4A 40 199 5 J8 7 82 5 YZ 24 146 2 4B 41 203 5 M1 8 85 4 YA 25 151 4 5Z 42 206 5 8Z 9 88 5 YB 26 15...

Page 88: ...134 112 364 131 138 606 631 61 054 413 87 225 122 113 365 125 139 612 346 62 065 271 88 226 411 114 371 734 140 624 632 63 071 306 89 243 351 115 411 226 141 627 031 64 072 245 90 244 025 116 412 143...

Page 89: ...ID Call Sign default is blank To clear a call sign from memory enter the command with no digits after it 272 Digits Code Digits Lette Code Digits Lette Code 00 0 12 A 26 N 01 1 22 B 36 O 02 2 32 C 17...

Page 90: ...r Knockdown 301 Repeater Setup 391 Reset all Programming to Factory Default Values 392 Transmit Audio Test 393 Transmit Audio Pre Emphasis Test 394 Repeat Audio Test 395 CTCSS Encode Test 396 CTCSS Fr...

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