NHRC-4/M2 Installation and Setup Guide
Contents
1. NHRC 4 M2 User Guide 14 2 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 5 100 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K Jor equivalent R10 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K Jor equivalent R11 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K equivalent R12 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K Jor equivalent 813 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K Jor equivalent R14 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K or equivalent R15 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K Jor equivalent R35 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K Jor equivalent R36 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K equivalent R6 10K 10K 1 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R8 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R16 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R19 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R20 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R21 40K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R24 10 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R25 40K 10K2. 4 2 operates using the MASTR II as the primary radio The primary radio must operate in full duplex mode If your MASTR II is not already converted for full duplex operation consult the NHRC WWW MASTR II Info site Full Duplex Conversion for duplexing information There are two options for interfacing the CAS and TX audio to the controller These signals do not normally appear on the P908 plug on the system board of the MASTR II You can either use an interface cable or you can modify the Option 1 Use an interface cable Transmit audio and CAS appear on the controller at J1 a 3 pin header Wire an interface cable as shown in the table below J1 Connections J1 MASTR II Pin Signal 1 MIC HI J902 6 CAS 904 9 MIC LO J902 5 2 2 2 1 2 1 1 Page 2 Copyright 2001 2005 NHRC LLC All Rights Reserved NHRC 4 M2 User Guide 2 1 2 Option 2 Modify the MASTR 11 System Board By cutting one trace and adding two wires to the MASTR II system board the jumper described in option 1 above can be avoided Add a wire that connects P908 pin 2 to J902 pin 6 the exciter s MIC HI input Cut the trace that leads to P908 pin 3 on the system board and add a wire that connects P908 pin 3 to J904 pin 9 the CAS signal from the IFAS board Install 0 ohm resistors jumpers R22 and R38 on the NHRC 4 M2 board enabling the TX audio and CAS signals on the J908 connector Note that these jumpers
3. 100K REMOTE BASE RX 22K 5 ALL CAPACITORS ARE 16V AUDIO MUTE ELECTROLYTIC 50V CERAMIC UNLESS OTHERWISE STATED VREF an gt AA 2 4 J NHRC Repeater Controllers cd af 100K 10 1 0 za 10K VDD 0 POT R8 THIS DRAWING CONTAINS 444 Micol Road PROPRIETARY INFORMATION WHICH Pembroke NH 03275 2 2 J IS THE CONFIDENTIAL PROPERTY 603 485 2248 C17 22K OF NHRC LLC IT SHALL NOT BE http www nhrc net 2 GND 22uF LE COPIED REPRODUCED DISCLOSED 6 d COURTESY TONE PUBLISHED OR USED IN PART OR NHRC 4 M2 Repeater Controller Audio AUDIO LEVEL WHOLE WITHOUT THE EXPRESSED VREF GENERATION WRITTEN PERMISSION OF NHRC LLC Document Number Rev SPECIFICATIONS SUBJECT TO CHANGE B NHRC 4 M2 Audio DRAWN BY N1LTL B gt WITHOUT NOTICE OR OBLIGATION Date Friday November 06 1998 Sheet 2 of 2 D PCB REV B ev DRAWN BY N1LTL 1 8 2 vec VLED VLED R39 R5 R2 33K VCC 470 470 aio y 3 vec 2N3906 U2 D5 MAIN D MCLRIVPP H4 o vec 4 VREF H8 o vec STD LED z LED CO
4. 2001 2005 NHRC LLC All Rights Reserved Page 9 NHRC 4 M2 User Guide 4 Appendices 4 1 Terminology and Abbreviations Description Carrier Activated Squelch where receipt of a signal with or without CTCSS tones will activate the controller Continuous Wave signals commonly using Morse Code The term refers to the radio emission type while Morse Code refers to the signaling type used Typically they are incorrectly used interchangeably Digital Audio Delay DAD removes squelch crashes and allows DTMF tones to be fully muted Also known as Touch Tone codes Identification Push to Talk Term CAS CW Digital Audio Delay DAD DTMF ID PTT Page 10 Copyright 2001 2005 NHRC LLC All Rights Reserved NHRC 4 M2 User Guide 5 Circuit Board 5 1 Interconnections P908 REPEATER Connects the primary repeater transmit and receive audio PTT CAS fan control and power signals to the controller P909 REMOTE BASE Connects the secondary repeater transmit and receive audio PTT and CAS signals for the radio to the controller AUX Supplies MIC HI and CAS signals for unmodified MASTR Iis with no system board modifications for the NHRC 4 M2 2 DELAY Connects power and audio signals for operation of the Digital Audio Delay NHRC DAD board for the primary radio port J3 RB DELAY Connects power and audio signals for operation of the Digita
5. REPEATER CONTROLLERS NHRC 4 M2 Instal ation and Setup Guide Copyright Notice Copyright 2000 2001 2005 by NHRC LLC This document contains proprietary information which is the confidential property of NHRC LLC No part of this document may be used or reproduced by any means or for any purpose without the expressed written consent of NHRC LLC No part of this document should be considered to be specifications for the proper or correct operation of the NHRC 4 M2 Repeater Controller In no way will NHRC LLC be liable for direct or indirect damages to the controller or attached equipment Printed in the U S A Thank You Thank you for purchasing the NHRC 4 M2 Repeater Controller This controller has been designed using the very latest state of the art technology Please review this manual carefully before putting your controller into operation This manual represents a very large documentation effort Your comments are important to us If you find an error or find any passages that are not clearly understandable we would like to hear about it Please send your comments to software nhrc net Support for the controller is available by email or telephone Please direct software related questions via email to software nhrc net Please direct hardware related questions via email to hardware nhrc net Your question s will be answered promptly Questions of a more urgent nature can be answered by telephone support
6. Telephone support is available Monday through Friday from 6 PM until 10 PM Eastern Time Table Of Contents EUOn 2 jOOPUn 2 2 1 PRIMARY RADIO PORT CONNECTIONS 2 00000020 0600000 0000000000000000 000 2 24 1 Option 1 Use an interface cable ete ener eerte 2 2 1 2 Option 2 Modify the MASTR II System Board 3 2 2 SECONDARY RADIO PORT WIRING 4 2 3 TSs32 DS 64HOOKUP ER die c He m tes eiue Id 5 VES EE NETT a 3 23 2 T9 323NO 8S f s t an d ERE A 6 3 INSTALLING THE NHRC 4 M2 INTO THE MASTER II 7 3 1 THE LED STATUS INDICATORS u au 7 3 2 INSTALLING THE NHRC DAD WITH THE NHRC 4 M2 aaa 71 33 USING THE DIGITAL 8 3 4 ADJUSTING THE AUDIO LEVELS 8 10 00101010100101 APPENDICES 4 10 TERMINOLOGY AND ABBREVIATI NS uuu umanaka aap 4 1 11 CIRCUIT BOARD uu a k a 2 a 5 11 INTERCONNECTIONS m
7. Wire JTS32 to the TS 32 TS 64 as follows JTS32 Connections JTS32 TS 32 Description Pin Signal p 1 HV POWER 10 volts to CTCSS board CTCSS DECODER INPUT receiver audio to CTCSS decoder receiver audio to audio filter input AUDIO FILTER INPUT separate lead for TS 64 2 3 4 FROM AUDIO FILTER OUTPUT filtered audio to controller 5 6 7 decode signal from CTCSS decoder Relea See important warning below CTCSS ENCODER OUTPUT CTCSS tone to transmitter GROUND amp HANG UP Ground WARNING DO NOT APPLY VOLTAGE TO THE CTCSS DETECT INPUT his input is pulled low by the CTCSS decoder when CTCSS is NOT PRESENT It will float high hen CTCSS is detected Application of voltage to this input will destroy Q4 and render the ontroller inoperative Damage of this nature is not covered by the NHRC Limited Warranty The TS 32 and the TS 64 both have a high pass filter to remove the CTCSS tone from the repeated audio By removing jumper JP3 the controller s audio can be passed through the audio filter on the TS 32 TS 64 Note If the audio filter is not used then jumper JP3 must be installed in order for audio to be passed through the controller The Communications Specialists CTCSS boards are not supplied by NHRC Contact Communications Specialists at 800 854 0547 directly to order these boards 2 3 1 TS 64 Notes Consult the NHRC 4 M2 TS 64 Application note for detailed connection instructions The TS 64
8. 1 6 28R C C18 R 510K C 0 0068uF 2 1 DISC_AUDIO L gt Vi 10K POT Ct R36 MAIN 2 2 jk 11 2 1 2 P23 R31 RX AUDIO j 1 1 2 1 2 LEVEL 1uF 51K vREFo _3 t i DECODE AUDIO 0 1uF 100K d MAIN J2 RX AUDIO BUFFER VDD 1 3 4 vgc HEADER 4 MAIN RX AUDIO M R15 3 Q7 DELAY CONNECTOR MAIN TX AUDIO 10K MPF102 MASTER LEVEL R16 Q2 i 22 6 257000 1 2 IN VR3 MUTE 100K MAINRX 5 10K AUDIOMUTE 1uF POT R7 R9 qu 1 22 2 2 1 2 1 C TX AUDIO JP1 22K 33K Tx JUMPER MAIN RX TL064 1uF 5 INIT AUDIO LEVEL MAIN TX AUDIO AMP IP 2 1 l NOTE REMOTE BASE TX AUDIO 0 0068uF FOR FLAT AUDIO MASTER LEVEL RESPONSE R19 REMOVE C15 CHANGE R30 2 1 J R32 TO 100K RB DISC AUDI 10K 510K POT 93 R20 R10 2 REMOTE BASE 2 2 ti 2 13 FC 1 6 28R C i 22 jk 1 RX AUDIO 14 R 510K C24 LEVEL 1uF 51K VREFoO 12_ 5 C 0 0068uF 33K tuF VREFo 19 L RB TX AUDIO d REMOTE BASE 064 J3 064 Ss RX AUDIO bb BUFFER VREF 1 REMOTE BASE 5 9 R26 4 100K HEADER 4 REMOTE BASE NOTES Q6 RX AUDIO DELAY 1 VDD 6 3 VDD MPF102 CONNECTOR 2 VCC 5VDC VREF 6VDC or 1 2 VDD 3 4 9 R34 6 9 n R6 4 ALL RESISTORS ARE 1 4W R42 RB MUTE 22 2N7000 1 2 1 2 4 5 TOL UNLESS OTHERWISE 10K J STATED
9. 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R29 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R30 40K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R31 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R33 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R37 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R40 40K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R9 100 100 4W 5 Carbon Film Resistor Yaego CFR 25JB 100R or equivalent 18 100 100 4W 5 Carbon Film Resistor Yaego CFR 25JB 100R or equivalent R26 100 100 14W 5 Carbon Film Resistor Yaego CFR 25JB 100R Jor equivalent R23 93 1 93 11 4W 5 Metal Film Resistor Yaego MFR 25FBF 93K1 jor equivalent R17 470 470 5 Carbon Film Resistor Yaego CFR 25JB 470R Jor equivalent R22 470 470 5 Carbon Film Resistor Yaego CFR 25JB 470R Jor equivalent 27 470 470 5 Carbon Film Resistor Yaego CFR 25JB 470R Jor equivalent R32 470 470 5 Carbon Film Resistor Yaego CFR 25JB 470R Jor equivalent R34 470 470 5 Carbon Film Resistor Yaego 25 470 equivalent R28 470K 470K 4W 5 Carbon Film Resistor Yaego CFR 25JB 470K equivalent R39 39 39K 1 4W 5 Carbon Film Resistor Yaego CFR 25JB 39K or equivalent U1 TLO64 Quad Op Amp Tl TLO64CN see note 1 U2 LM7805CT 5V 1 048 Voltage Regulator Nat l LM340T 5 0 or equival
10. may already be populated on your board If you plan on using the local microphone on the MASTR II s control head install a 1 5K resistor in location R38 P908 Primary Radio Port Connections P908 Pin 1 Discriminator Audio Transmit Audio Add Wire to MIC HI On Exciter J902 6 CAS Cut existing trace to P908 3 Add Wire to CAS on IFAS J904 9 10V Regulated no connection PTT CG Encode Delayed PTT 9 Ground NHRC 4 M2 Use System Board Modification NID OI mo Copyright 2001 2005 NHRC LLC All Rights Reserved Page 3 NHRC 4 M2 User Guide 2 2 Secondary Radio Port Wiring The controller provides the secondary radio port on the F3 through F8 frequency select leads using the P909 connector These leads are routed to the front panel control cable connector on the systems board In mobile MASTR II radios these control lines are sometimes subject to the installation of diodes and jumpers and cutting of traces to share channel elements across more than one channel selection These diodes and jumpers must be removed and the cut traces must be jumpered to for proper operation of the controller Consult the MASTR 11 service manual for information on these jumpers Dissecting an old control cable makes an easy job of attaching your secondary radio to the MASTER II In an E chassis MASTR II a bit of clever wiring in the systems board can allow repeater on the top deck and the sec
11. the HOOKS WITCH signal to a TS 32 or other CTCSS decoder to enable or disable CTCSS Software allows the output to be enabled disabled or pulsed In fan control mode this output will be turned on when the transmitter is turned on and turned off a programmable amount of time after the transmitter is turned off 3 4 Adjusting the Audio Levels Audio Level Adjustments Potentiometer Use VR1 Primary Receiver Level VR2 Secondary Receiver Mix Level VR3 Primary Receiver Mix Level VR4 Beep Tone Mix Level VR5 Primary Transmitter Master Level VR6 Secondary Transmitter Master Level Preset all potentiometers to midrange Key a radio on the primary input frequency send some touch tones and adjust the primary receiver level until DTMF decoding is reliably indicated by yellow LED D5 Note If 17151 is set too high a crackling noise may be heard in the transmitted audio during the hang time Reduce the level set by until this noise goes away Any repeated audio level reduction caused by adjusting VR1 can be compensated for by adjusting VR3 primary receiver level or VR5 primary transmitter output level The primary radio s transmit deviation is set with VR5 the primary transmitter master level on the controller board and the transmitter s deviation modulation control The key to properly adjusting these controls is to remember that the limiter in the transmitter is after VR5 but probably before the transmitter s deviatio
12. 00 Straight w lock 4 Circuit Header 100 Straight w lock 4 Circuit Header 100 Straight w lock 8 Circuit Header 100 Straight w lock N Channel HEXFET N Channel HEXFET N Channel HEXFET N Channel MOSFET N Channel MOSFET N Channel MOSFET N Channel JFET N Channel JFET NPN Transistor NPN Transistor NPN Transistor NPN Transistor PNP Transistor 22K 4W 5 Carbon Film Resistor 22K 4W 5 Carbon Film Resistor 22K 4W 5 Carbon Film Resistor 33K 4W 5 Carbon Film Resistor 33K 4W 5 Carbon Film Resistor 33K 4W 5 Carbon Film Resistor Schematic 25V 25V YEL GRN GRN RED RED 3 3V Value 1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF 0 1 0 1 0 1 0 1 0 1 0 1 0 0068 0 0068 7 22uF 33pF 220uF LED LED LED LED LED 1N5226B JUMPER JUMPER JUMPER HEADER 6 HEADER 6 HEADER 4 HEADER 4 HEADER 8 IRFI510G IRFI510G IRFI510G 2N7000 2N7000 2N7000 MPF102 MPF102 2N3904 2N3904 2N3904 2N3904 2N3906 22K 22K 22K 33K 33K 33K Ref C1 C2 C6 C7 C8 C9 C11 C16 C19 C5 C13 C15 C17 C18 C20 C14 C10 C12 C21 C22 D1 D2 D4 D5 D3 D6 JP1 JP2 JP3 JTS64 J3 J1 J2 J4 Q1 Q6 Q9 Q2 Q5 Q7 Q4 Q3 Q8 Q10 Q11 Q12 Q13 R1 R2 R4 R3 R7 R38 Qty 11 Item O amp 10 11 12 13 14 15 16 17 18 19 20 21
13. ERFACE IRF510 3 VLED 5VDC for LED power 169 4 ALL RESISTORS ARE 1 4 P909 5 TOL UNLESS OTHERWISE i STATED w DIGITAL OUTPUT DRIVER 5 ALL CAPACITORS ARE 16V 2 ELECTROLYTIC 50V 3 RB_DISC_AUDIO UNLESS OTHERWISE STATED 5 RB_TX_AUDIO 6 7 Ut 8 reaget NHRC Repeater Controllers HEADER 8 1 3 vec vop 9 THIS DRAWING CONTAINS 444 Micol Road 4 1 d T N QUT x Gc o PROPRIETARY INFORMATION WHICH Pembroke NH 03275 REMOTE BASE 4 J 4 IS THE CONFIDENTIAL PROPERTY 603 485 2248 CONNECTOR C16 C15 2 OF NHRC LLC IT SHALL http www nhrc net NEA a C14 a o uo ps GND COPIED REPRODUCED DISCLOSED fite 220uF PUBLISHED OR USED IN PART OR NHRC 4 M2 Repeater Controller Digital 25 7 WHOLE WITHOUT THE EXPRESSED BYPASS CAPS WRITTEN PERMISSION OF NHRC LLC Document Number e SPECIFICATIONS SUBJECT TO CHANGE B NHRC 4 M2 Digital WITHOUT NOTICE OR OBLIGATION Date Monday January 18 1999 Eneet 1 8 D E NHRC 4 M2 User Guide 7 Parts List The following is the bill of materials for revision of the NHRC 4 M2 Repeater Controller Notes or equivalent or equivalent or equivalent or equiv
14. R z IN LU a FZ DECODE AUDIO 2 IN q Hi 2 02 a Gs ae 3 4 RA2 HL 88 Q3 E RA3 Q4 1 2 aa R14 3 MUTE R21 TOCKI RA4 L MUTE 100K sto 2 sm 1 22 6 287000 CAS 1 22 4 03 uP RESET Tao FS SD vcco 9 SED 17 J 3 253904 RBI Z EST 10K 4 RB2 9 RB 3 5 VDD RB3 To gt RB_MUTE 7 H Be ET EN 1 OSC IC RBS eee OSC2 vss J RES i BEEP 0167001 8 Ww K 16 OSC1 CLKI ej XH oscaictko vss DTMF DECODER EM 2 a PIC16F84 04 P Y1 020 2N3904 T 2 1 2 PIC 4 4 PIC uP jette i BX_AUDIO R38 3 579MHz 33pF MAIN P908 CAS COR ISOLATION 1 2 TX_AUDIO 1 2 CAS pe py 2 1 PTI u Oe 2 Ri R3 R4 1 2 JUMPER ee 1 52 SER 470 470 470 R24 HEADER 9 0 JUMPER o o vec LED ENABLE JUMPER REPEATER MAIN Dt REMOTE BASE 3 REMOTE BASE CONNECTOR TS32 64 PTTLED VW LED PTT LED WF COR LED VDD BYPASS RED RED JTS32 9 JUMPER JUMPER 15 yg m PII RB PIT f 4 gt 825 6 R29 BB CAS 1 22 Q12 1 7 48 95 PTT 1 2A 08 2N3904 IRF510 ETT IRF510 100 100 HEADER 7 TS32 64 MAIN REMOTE BASE CONNECTOR PTT DRIVER PTT DRIVER Jt 1 AUDIO T 2N3904 3 HEADER 3 S NOTES 1 R28 6 1 VDD 12VDC REMOTE BASE AUX MASTR ii DOUTEN 1 21 Q9 2 VCC 5VDC CAS COR ISOLATION INT
15. a eee eie u 5 1 6 SCHEMATICS was 12 7 PARTS LIST sssssssrsssseesssssrsessesersesessensessssenesescesenssssesensesessseseessensesensssesseneesessssessessesessesseseseens 15 NHRC LLC LIMITED WARRANTY 0000 17 Copyright 2001 2005 NHRC LLC All Rights Reserved Page i NHRC 4 M2 User Guide Introduction 1 This manual describes how to install and set up the NHRC 4 M2 repeater controller This manual should be used in conjunction with the NHRC 4 Operating Manual which describes the programming and operation of the controller Installation This section of the User Guide describes the electrical interfaces used to connect the controller to e Power and primary repeater the GE MASTR II e Link Remote Base radio Communications Specialists TS 64 CTCSS Encoder Decoder Optional NHRC DAD digital audio delay board s It is intended for the repeater operator to use in the planning and installation of the NHRC 4 M2 Repeater Controller into a repeater system The controller is designed to be installed inside of a GE MASTR II mobile or station The controller is installed onto the connectors that GE intended for the channel guard board CTCSS is supported with an optional CommSpec TS 64 of the controller s signals for the primary and secondary radios as well as the digital output are presented at either J908 or 1909 Primary Radio Port Connections The
16. alent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent Do Not Populate or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent or equivalent Page 15 Mfg P N ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECS F1CE105K ECU S1H104MEA ECU S1H104MEA ECU S1H104MEA ECU S1H104MEA ECU S1H104MEA ECU S1H104MEA ECU S1H682KBA ECU S1H682KBA ECA 1EM220 ECU S2A330JCA ECA 1EM221 LTL 4253 LTL 4233 LTL 4233 LTL 4203 LTL 4203 1N5226B 22 03 2021 22 03 2021 22 03 2021 22 23 2061 22 23 2061 22 23 2041 22 23 2041 22 23 2081 IRFI510G IRFI510G IRFI510G 2N7000 2N7000 2N7000 MPF102 MPF102 2N3904 2N3904 2N3904 2N3904 2N3906 CFR 25JB 22K CFR 25JB 22K CFR 25JB 22K CFR 25JB 33K CFR 25JB 33K CFR 25JB 33K Mfg Panasonic Panasoni
17. c Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Lite On Lite On Lite On Lite On Lite On Diodes Inc Molex Molex Molex Molex Molex Molex Molex Molex IRF IRF IRF Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Yaego Yaego Yaego Yaego Yaego Yaego Copyright 2001 2005 NHRC LLC All Rights Reserved Description 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 1uF 16V Tantalum Cap 0 1uF 50V 250 Ceramic Radial Cap 0 1uF 50V 250 Ceramic Radial Cap 0 1uF 50V Z5U Ceramic Radial Cap 0 1uF 50V Z5U Ceramic Radial Cap 0 1uF 50V 250 Ceramic Radial Cap 0 1uF 50V Z5U Ceramic Radial Cap 0 0068uF 50V X7R Ceramic Radial Cap 0 0068uF 50V X7R Ceramic Radial Cap 22uF 25V Aluminum Radial Electrolytic Cap 33pF 100V COG Ceramic Radial Cap 220uF 25V Aluminum Radial Electrolytic Cap Yellow T134 LED Green T134 LED Green T134 LED Red T134 LED Red T134 LED 3 3V 596 500mW Zener Diode 2 Circuit Header 100 Straight 2 Circuit Header 100 Straight 2 Circuit Header 100 Straight 6 Circuit Header 100 Straight w lock 6 Circuit Header 1
18. details on setting the CTCSS frequency Page 6 Copyright 2001 2005 NHRC LLC All Rights Reserved 4 2 User Guide Installing the NHRC 4 M2 into the MASTR Il The controller installs in the MASTR II where the MASTR II Channel Guard board normally belongs plugged into the top of the systems board in the front of the radio If you have not already removed the Channel Guard board do so now by pulling it straight up and out of the radio The NHRC 4 M2 installs with the component side of the board facing the control head cable connector Carefully line up the P908 left side and P909 right side connectors with the pins on the system board Push the board down firmly until the connectors are right against the system board The controller is now installed The LED Status Indicators The NHRC 4 repeater controller is equipped with five status LEDS that aid in setup and troubleshooting There are green LEDs for each radio port that indicate that the controller has getting a valid CAS carrier operated switch and if a CTCSS decoder is connected a valid CTCSS decode signal The appropriate green LED should light when its receiver is active and if a CTCSS decoder is present the correct CTCSS tone is present The yellow LED indicates that a DTMF signal is being decoded on the primary receiver This LED should light for the entire duration that the DTMF signal is present on the primary receiver The red LED s indicates transmit Thes
19. e LED will light when its respective transmitter is transmitting The LEDS can be disabled to reduce the power consumption of the controller Remove jumper JP2 to disable the LEDS 3 1 3 2 Installing the NHRC DAD with the NHRC 4 M2 J2 Primary Radio DAD J3 Secondary Radio DAD Pin Use 13 8 Volts to delay board Audio to delay board Audio from delay board Ground Audio Return R O mM The audio delay for the primary radio simply plugs in to J2 The audio delay for the secondary radio plugs in to J3 If the audio delay is not installed a jumper between pins 2 and 3 of the port s delay connector must be installed or the controller will not pass audio Itis strongly recommended that the CTCSS filter be used as described above if both CTCSS encode decode and the audio delay are used See the Operation Instructions section on programming the flag bits to tell the controller the delay is present Copyright 2001 2005 NHRC LLC All Rights Reserved Page 7 NHRC 4 M2 User Guide 3 3 Using the Digital Output The NHRC 4 Repeater Controller has a digital output that can be used for various remote control applications or to control a fan on the repeater s transmitter The digital output is an open drain into a power MOSFET which is capable of sinking quite a bit of current but we recommend a maximum load of about 500 mA Use a relay to drive larger loads The open drain output can be used to gate
20. ent U3 M 8870 01 DTMF Decoder Teltone M 8870 01 see note 1 U4 16 84 04 Microcontroller Blank Microchip 16 84 041 see note 1 VR1 10K POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 equivalent VR2 1101 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 equivalent VR3 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 equivalent VR4 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 equivalent VR5 200 POT 200K 6mm Carbon Trimpot Panasonic EVN D2AA03B25 equivalent VRe 76 200K 6mm Carbon Trimpot Panasonic EVN D2AA03B25 equivalent Y1 3 579MHz 3 579545 2 Crystal ECS ECS 35 17 4 or equivalent Additional Items NHRC 4 M2 PCB NHRC 4 M2 PCB REV B NHRC REV B 18 Pin DIP Socket Mill Max 110 99 318 41 001 at U3 U4 14 Pin DIP Socket Mill Max 110 99 314 41 001 use at U1 Notes 1 Use sockets for U1 U3 and U4 Page 16 Copyright 2001 2005 NHRC LLC All Rights Reserved 4 2 User Guide NHRC LLC Limited Warranty NHRC LLC warrants that it s assembled and tested products will be free from defects in materials and workmanship for a period of NINETY DAYS from the date of shipment During this period NHRC LLC will repair or replace at our option any of our products that fail as a result of defects in materials or workmanship NHRC LLC s liability will be limited to parts labor and return shipping for this period NHRC LLC warran
21. has a reverse burst PTT delay feature that can be used with the NHRC 4 M2 This feature is useful to eliminate the squelch crash received by the user s radio when the repeater transmitter drops Note that the user s radios must have CTCSS decoding enabled for this to work The NHRC 4 M2 provides support for the PTT delay through jumper JP4 JP4 pin 1 is the controller s PTT signal and JP4 pin 2 is PTT to the MASTR II If the reverse burst PTT delay feature is not used then a jumper must be installed on JP4 so the controller can key the MASTR II Copyright 2001 2005 NHRC LLC All Rights Reserved Page 5 4 2 User Guide Adjust the CTCSS deviation with R20 on the TS 64 board with the CG LEVEL pot on the MASTR 11 exciter set to midrange The ideal deviation for the CTCSS tone is 750 Hz Consult the TS 64 INSTRUCTION SHEET for details on setting the CTCSS frequency and the reverse burst 2 3 2 TS 32 Notes The TS 32 must have the JU 2 jumper cut Use the OUT 2 signal from the TS 32 into the CTCSS detect of the NHRC 4 M2 If you want to be able to disable the CTCSS requirement install a switch on the HANGUP lead The TS 32 will supply CTCSS encode tone to the exciter through the 4 2 Adjust the CTCSS deviation with the R29 on the 15 32 board with the CG LEVEL pot on the MASTR II exciter set to midrange The ideal deviation for the CTCSS tone is 750 Hz Consult the TS 32 INSTRUCTION SHEET for
22. l Audio Delay NHRC DAD board for the secondary radio port JTS64 JTS64 Interfaces a Communications Specialists TS 64 to the controller for CTCSS detection This is a detailed top view of the Revision B printed wiring board for the NHRC 4 M2 Repeater Controller Comm Spec Axoslary Main RB Main RB Man Courtesy Main 5 32 4 5 32 64 LED MASTRII NHRC DAD NHRCDAD Discrim Discim RX Tone TX RBTX Interface Bypass PTT Enable INIT Interfsce Interface Audio Audo Audio Audo Audio Audio Connector Jumper Jumper Jumper Jumper Connector Connecter Connector Level Level Level Level Level Level 040006 i 2 gt SC SFC RC Man Repeater Connector Remote Base RB Connector Copyright 2001 2005 NHRC LLC All Rights Reserved Page 11 NHRC 4 M2 User Guide 6 Schematics The following two pages the schematic diagram for the Revision B Version of the NHRC 4 M2 Repeater Controller Page 12 Copyright 2001 2005 NHRC LLC All Rights Reserved D E 8 pa REV B NOTE 2 1 0 0068uF FOR FLAT AUDIO RESPONSE R35 REMOVE C8 CHANGE R21 2 1 1 AND R22 TO 100K 510K VDD FC
23. n modulation control The transmitter s deviation modulation control will set the actual peak deviation and VR5 will set the level into the transmitter You do not want excessive limiting on normal speech going through the repeater it sounds bad and tends to pump up background noise On the other hand some limiting is desirable An oscilloscope connected to the audio output of a receiver tuned to the transmitter s frequency will show limiting as the audio gets flat topped or clipped by the limiter Ideally a 4 5KHz deviation signal input to the repeater should result in a 4 5 KHz deviation output and 5 5 KHz of input deviation should result in just under 5 0 KHz of deviation out of the repeater A service monitor or two deviation meter and or a signal generator are necessary to do this job right The secondary radio s transmit deviation is set with VR2 the secondary transmitter master level Enable the secondary transmitter and adjust VR2 for proper transmit deviation similarly to VRS Page 8 Copyright 2001 2005 NHRC LLC All Rights Reserved NHRC 4 M2 User Guide Enable the secondary receiver and adjust VR6 for reasonable deviation on the enabled transmitters when a signal is received on the secondary receiver Adjust VR4 the beep level to set the courtesy tone and CW tone level VR3 is used to set the primary receiver s audio mix level and may not need to be adjusted from midpoint Copyright
24. ondary remote base radio on the bottom deck In base stations and repeaters the P909 connector is unused Individual wires must be attached to P909 to break out the secondary radio port P909 Secondary Radio Port Connections J901 das NHRC 4 M2 Use control cable in Select Pin 1 Secondary port CAS F8 15 2 Secondary port PTT F7 14 3 Secondary port CTCSS detect F6 13 4 Secondary port receiver audio F5 12 5 Secondary port transmitter audio F4 11 6 Digital output F3 10 7 no connection F2 9 8 Unused ground to select F1 F1 8 It is extremely important that the radio attached to the secondary radio port be provided with a common ground from the MASTR Il The lead J901 pin 30 is a good spot If this common ground is not provided erratic operation or distorted audio on the secondary radio will result Also note that the Secondary port CAS requires an active high signal Consult the NHRC 4 M2 Remote Base Breakout Application note for instructions on converting CAS from active low if an active high signal cannot be supplied Page 4 Copyright 2001 2005 NHRC LLC All Rights Reserved NHRC 4 M2 User Guide 2 3 TS 32 TS 64 hookup Connector JTS32 is a 7 pin header that allows the easy installation of an optional Communications Specialists TS 32 or TS 64 for CTCSS decode encode CTCSS audio filtering and reverse burst Reverse burst is only available with the TS 64
25. ts that its kit products will contain components that are free from defects in materials and workmanship for a period of THIRTY DAYS from the date of shipment During this period NHRC will replace any of the components in a kit ONCE Subsequent replacement of any component any subsequent times is completely at the discretion of NHRC LLC and may require the complete return of the kit In no case will NHRC LLC be liable for products damaged by improper wiring including but not limited to over voltage or application of reverse polarity physical damage resulting from misuse and or abuse of the product neglect or acts of God lightning floods etc Unauthorized modification of a NHRC product will void the warranty on the modified product In no case will NHRC LLC be liable for any direct consequential or incidental loss or damage resulting from the use or inability to use any of its products Some states or countries do not allow the limitation of incidental or consequential damages so the paragraph above may not apply to you This warranty applies only to the original purchaser of the product proof of purchase must be presented to receive warranty service Copyright 2001 2005 NHRC LLC All Rights Reserved Page 17 NHRC REPEATER CONTROLLERS
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