NHRC-4/MVP Installation and Setup Guide
Contents
1. NO 7 LED S Jr Le s Main e NHRC A Myp B9 PIT Repeater 8 Ne 03 LED P e rzs zo Ql es A 2 DEAY 9 5 Mal e ain B 8 COR cs ED e Bare 8 e e e eN Main mm Uimeeecccce Go eu G N 013 L cig 1 JP3 020855 JP2 m 322 839840 m e ED Enable J3 REMOTE BASE 1564 Mm PEATER LED EN Jumper BASE 6666 20066 02 1 1 1 2000 NHRC Remote CommSpec Main Base TS 32 64 Repeater Connector Interface Connector Connector CommSpec TS 32 64 Audio Bypass Jumper Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 15 4 User Guide 7 Schematics The following two pages the schematic diagram for the Revision Version of the NHRC 4 MVP Repeater Controller Page 16 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 5V VLED VLED R17 R32 470 470 013 lt 45V 2N3906 10K m u3 01 MAIN 04 D MCLR VPP 4 VREF 18 5 SIDLED xz SEM CORLED LED Hed 1 5226 iz o o Ri Lu G2. Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 5 4 User Guide 2 5 The LED Status Indicators The NHRC 4 MVP repeater controller is equipped with five status LED s that aid in setup and troubleshooting There are green LED s for each radio port D2 and D4 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 This LED should light when the repeater s receiver is active and if a CTCSS decoder is present that the correct CTCSS tone is present The yellow LED D1 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 D3 and D5 indicate transmit These LED s will light when the each transmitter is transmitting The LED s can be disabled to reduce the power consumption of the controller Remove jumper JP3 to disable the LED s 2 6 Using the Digital Output The NHRC 4 MVP 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 the HOOKSWITCH signal to a T
3. J1 RB DELAY Connects power and audio signals for operation of the Digital Audio Delay NHRC DAD board for the secondary radio port DELAY Connects power and audio signals for operation of the Digital Audio Delay NHRC DAD board for the primary radio port REMOTE BASE Connects the secondary repeater transmit and receive audio PTT and CAS signals for the radio to the controller REPEATER Connects the primary repeater transmit and receive audio PTT CAS fan control and power signals to the controller JTS64 Interfaces a Communications Specialists TS 64 to the controller for CTCSS detection The following page is a detailed top view of the Revision B printed wiring board for the NHRC 4 MVP Repeater Controller Page 14 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 4 User Guide Main Main Courtesy RX Processed Tone TX RB TX Audio Audio Audio Audio Audio Audio INIT Level Level Level Level Level Level d Qt e e m Se m Be m z 2 m 8 x E e 5200 1 5 Remote E DIMF Base eR 2 es Vaild Q5 m R LAY m gt LED NHRC DAD uic are 3 9 eene d ae Interface wel Connectors e e C g
4. REPEATER CONTROLLERS NHRC 4 MVP Instal ation And Setup Guide Guide Version 2006 Jan 31 Copyright Notice Copyright 2000 2001 2005 2006 by NHRC LLC This document contains proprietary information which is the confidential property of NHRCLLC 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 MVP 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 MVP 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 na
5. microfarad capacitor at C10 must be installed on the board Consult the NHRC 4 MVP Repeater Controller Audio schematic as a reference for the modification The receiver must provide a signal present indication also called CAS COR RUS to the controller The controller requires an active high signal here If your radio only has active low signaling available a simple inverter can be constructed with a 2N3906 and a 4 7K resistor Connect the emitter of the transistor to a source of positive voltage the collector to the controller s CAS terminal and the base to the active low signal through the 4 7K resistor Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 3 4 User Guide Transmitter audio can be fed directly into the microphone input of the transmitter VR5 is the master level control for the primary radio used to set the audio level into the transmitter VR6 is the master level control for the secondary radio The transmitter s deviation limiter sometimes called IDC should be set such that the transmitter cannot overdeviate regardless of input signal level One way to adjust transmitter deviation is to set the transmitter deviation limiter wide open unlimited adjust the controller s master output until the transmitter is slightly overdeviating then set the transmitter s deviation limiter to limit just below 5 KHz deviation Then reduce the controller s master output until the transmitted audio do
6. R23 AND R24 TO 100K 93 1K 12V 2 DISC AUDIO gt Gt R24 5 MAIN j 11 pe gt 620 R35 RX AUDI 1 1 1 LEVEL 1uF 10K VREFo 3 ui D gt DECODE AUDIO UIA 0 tuF 100K MAIN 1064 RX AUDIO BUFFER HNG 1 E Y R14 100K HEADER 4 l MAIN RX AUDIO Q4 DELAY CONNECTOR MAIN TX AUDIO MPF102 MASTER LEVEL 95 4 2N7000 i 4 2 VR3 107 MAINRX C4 POT AUDIO MUTE 1uF R2 R7 G7 e 1 PNE j 1 gt TX_AUDIO 22K 33K VREFO 5 7064 41 AUDIO LEVEL MAIN TX AUDIO AMP C10 NOTE 0 0068uF 0 REMOTE TX AUDIO DO NOT POPULATE FOR DE EMPASIZED MASTER LEVEL AUDIO RESPONSE POPULATE C10 VR2 CHANGE R10 TO 93 1K RB DISC AUDIO 2 10K AND R11 TO 10K POT c2 RH R3 11 1 AUDIO LEVEL 100K VREF 33K TF 10 c gt RB TX AUDIO UID REMOTE BASE 1064 Ji 1064 luF RX AUDIO BUFFER VREF 12V0 1 REMOTE BASE E 5 TX AUDIO AMP R13 s 100K HEADER 4 NOTES REMOTE BASE 1 VREF 46VDC or 1 2 VDD q AUDIO DELAY 2 ALL RESISTORS ARE 1 4W 12V MPF102 CONNECTOR 5 TOL UNLESS OTHERWISE STATED R12 6 Q2 R1 3 ALL CAPACITORS ARE 16V R20 2N7000 i 4 2 1 ELECTROLYTIC 50V CERAMIC 10K RB_MUTE Z ANNAM UNLESS OTHERWISE STATED 100K REMOTE BASE RX 22K AUDIO MUTE VREF R5 PCB REV A B VR4 4 BEEP 10K BE R19 12V t
7. inability to perform these modifications If you have any doubt about your ability to correctly perform the modifications or to install the repeater controller seek professional assistance Damage to your Custom MVP and or NHRC 4 MVP repeater controller caused by improper installation or hookup is not covered by the NHRC limited warranty We strongly recommend that you have access to a service manual for your Custom MVP it is nearly impossible to properly modify tune and maintain the radio without one This document is the only support available for duplexing the Custom MVP No other assistance is available from NHRC regarding duplexing this radio 3 2 Duplex Modifications 3 2 4 Multi Channel Radios If your MVP is a multi channel radio you will probably want to disable the channel selector and select channel 1 F1 with a jumper installed on the Oscillator Multiplier board Consult the Service Manual for this jumper location 3 2 2 Antenna Connections In order to use the Custom MVP in duplex operation a separate antenna lead must be brought out of the radio for the receiver antenna connection Remove the jumper between the T R Relay board and the receiver input which is located inside the RF assembly casting Drill a 4 hole adjacent to the SO 239 antenna connection making sure you leave sufficient room to put the cover back on the radio Route a piece of double shielded coax through the hole We recommend that you use RG 142 RG 22
8. 00101010101 19 NHRC LLC LIMITED WARRANTY 21 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Pagei 4 User Guide 1 Introduction This manual describes how to install and set up the NHRC 4 MVP repeater controller This manual should be used in conjunction with the NHRC 4 Operating Manual which describes the programming and operation of the controller Page 2 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 4 User Guide 2 Installation This section of the User Guide describes the electrical interfaces used to connect the controller to Power and primary repeater the GE Custom MVP e Link Remote Base radio Communications Specialists TS 64 CTCSS Encoder Decoder e 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 MVP Repeater Controller into a repeater system The controller uses an 8 pin 0 100 header for all the primary radio s signals and DC power pin 0 100 header for the secondary radio s signals and a 6 pin 0 100 header for an external TS 64 CTCSS encoder decoder for the primary radio In addition it has two 4 pin 0 100 connectors to support optional NHRC DAD digital audio delays for both radio ports Each radio port requires audio and a signal p
9. 0K Jor equivalent R36 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K equivalent 23 14 R6 10K 10K 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R8 10K 10K 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R16 10K 10K 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 10K 10K 4W 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R25 40K 10K 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 10 10K 5 Carbon Film Resistor Yaego CFR 25JB 10K or equivalent R37 110 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 24 3 9 100 100 4W 5 Carbon Film Resistor Yaego CFR 25JB 100R or equivalent R18 100 100 4W 5 Carbon Film Resistor Yaego CFR 25JB 100R or equivalent R26 100 100 14W 5 Carbon Film Resistor Yaego 25 100 __ equivalent 25 R23 93 1 93 1K 4W 5 Metal Film Resistor Yaego MFR 25FBF 93K1 jor equivalent 26 5 R17 4
10. 2 D5 LED RED Red T134 LED Lite On LTL 4203 or equivalent D3 LED RED Red T1354 LED Lite On LTL 4203 or equivalent 10 1 D6 1N5226B 3 3V 3 3V 596 500mW Zener Diode Diodes Inc 1N5226B or equivalent 11 3 JP1 2 Circuit Header 100 Straight Molex 22 03 2021 or equivalent JP2 JUMPER 2 Circuit Header 100 Straight Molex 22 03 2021 or equivalent JP3 JJUMPER 2 Circuit Header 100 Straight Molex 22 03 2021 or equivalent 12 2 JTS64 HEADER 6 6 Circuit Header 100 Straight w lock Molex 22 23 2061 or equivalent J3 HEADER 6 6 Circuit Header 100 Straight w lock Molex 22 23 2061 or equivalent 13 2 1 HEADER 4 4 Circuit Header 100 Straight w lock Molex 22 23 2041 or equivalent J2 HEADER 4 4 Circuit Header 100 Straight w lock Molex 22 23 2041 or equivalent 14 ji M4 HEADER 8 8 Circuit Header 100 Straight w lock Molex 22 23 2081 or equivalent 15 3 01 IRFI510G N Channel HEXFET IRF IRFI510G or equivalent Q6 IRFI510G N Channel HEXFET IRF IRFI510G or equivalent Q9 IRFI510G N Channel HEXFET IRF IRFI510G or equivalent 16 3 02 2N7000 N Channel MOSFET Fairchild 2 7000 or equivalent Q5 2N7000 N Channel MOSFET Fairchild 2 7000 or equivalent Q7 2N7000 N Channel MOSFET Fairchild 2N7000 or equivalent 17 2 04 102 N Channel JFET Fairchild MPF102 or equivalent Q3 MPF102 N Channel JFET Fairchild MPF102 or equivalent 18 4 2N3904 NPN Transistor Fairchild 2N3904 or equivalent Q10 2N3904 NPN Transistor Fairchild 2 3904 or equi
11. 3 or RG 400 cable here Solder a RCA plug onto the end of the cable inside the radio and plug it into the receiver antenna jack Install the connector of your choice on the other end of this cable This will serve as your receiver antenna input 3 2 3 Simultaneous Transmit and Receive Modification The rest of the duplexing modifications are performed on the System Audio Squelch SAS board The SAS board is located behind the front panel of the radio Remove the front panel to access the SAS board Page 8 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 4 User Guide The SAS board is shown below Remove the GE Channel Guard CG module if it is installed The CG module is located next to the SAS board and can be identified by the lack of any connectors on the board Unplug the CG boards connections to the SAS board Cut off or completely remove the CG encoder cable that runs from the CG board to the exciter You may want to keep the cables and plugs from the CG board they may come in handy when interfacing the needed repeater signals to the radio after all duplexing modifications have been performed Remove the SAS board from the radio These boards vary slightly from revision to revision but are fundamentally the same Remove the 2 screws on the audio amp IC heat sink Remove the screw from the voltage regulator TO 220 transistor Note the insulators over and under this transistor they must be re instal
12. 3 3V R39 RAD 8 62 DECODE AUDIO gt N 85 Ra 93 R36 e 9 14 QS od Au Sy Mute Q4 R16 Q7 R31 TOCKI RA4 100K erp STO 1 2N7000 CAS an uP RESET 18 STD 45V 0 10 og spar Li 2N3904 n 7 PTT EN Ker V 4 10K 2 8 RB_COR Py M RB3 gt gt RB_MUTE Ic RBA DOUTEN OSC1 IC es DOU TEN i RES BEEP OSC2 vss Rae 3 COR gt gt BEEP 8870 01 8 195 PICCLK OSC1 CLKI 5 DTMF DECODER R28 x 5 vss 470K PL DEC dia PICT6C84 04 P Yi C21 2N3904 PICCLK PIC uP 12V 3 579MHz 33pF MAIN J4 9 CAS COR ISOLATION 1 AUDIO 5 DOUT X TX AUDIO A VLED 8 DOUT VLED VLED HEADER 8 9 9 R22 1 1 470 REPEATER R18 R34 R27 CONNECTOR DOUT EN i Q6 470 470 IRFIS10G 12V 100 lt g REMOTE BASE JTS64 DIGITAL FAN OUTPUT DRIVER COR LED ib MAIN D5 REMOTE BASE D3 RX AUDIO PTTLED WF LED PTT LED ED 2 RX AUDIO RED RED gt gt gt DISC AUDIO ET mo T m RB PIT R21 Ee EA pan HEADER 6 lo o2 pisc_Aupio EUNT R9 R26 10K TS 32 64 JUMPER PTT EN a RB PTT EN o 4 CONNECTOR IRFIS10G IRFI510G 12V TS 32 64 FILTER BYPASS 100 100 1 s R25 J33 MAIN REMOTE BASE 10K 1 RB CAS JP3 PTT DRIVER PTT DRIVER RB PIT o2 6 PL DEC 38V RB
13. 7 2 18 Pin DIP Socket Mill Max 110 99 318 41 001 use at U3 U4 38 ji 14 Pin DIP Socket Mill Max 110 99 314 41 001 use at U1 Notes 1 Use sockets for U1 U3 and U4 Page 20 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved NHRC 4 MVP 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 warrants 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 pr
14. 70 470 14W 5 Carbon Film Resistor Yaego CFR 25JB 470R Jor equivalent 22 470 470 14W 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 14W 5 Carbon Film Resistor Yaego CFR 25JB 470R Jor equivalent R34 470 470 5 Carbon Film Resistor Yaego 25 470 equivalent 27 i R28 470K 470K 5 Carbon Film Resistor Yaego CFR 25JB 470K jor equivalent 28 1 R39 39 39K 4W 5 Carbon Film Resistor Yaego CFR 25JB 39K or equivalent 29 1 U1 TLO64 Quad Op Amp Tl TLO64CN see note 1 30 1 U2 LM7805CT 5V 1 0A Voltage Regulator Nat l LM340T 5 0 or equivalent 31 1 U3 M 8870 01 DTMF Decoder Teltone M 8870 01 see note 1 32 1 U4 PIC16C84 04 P PIC Microcontroller Blank Microchip 16 84 041 see note 1 33 4 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 equivalent VR2 110 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 or equivalent VR3 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 or equivalent VR4 POT 10K 6mm Carbon Trimpot Panasonic EVN D2AA03B14 equivalent 34 2 5 200 200K 6mm Carbon Trimpot Panasonic EVN D2AA03B25 equivalent VRe 200 200K 6mm Carbon Trimpot Panasonic EVN D2AA03B25 equivalent 35 1 3 579MHz 3 579545MHz Crystal ECS ECS 35 17 4 or equivalent Additional Items NHRC 4 MVP PCB 36 i NHRC 4 MVP PCB REV NHRC REV B 3
15. ONTROL channel guard board is an easy way to get this signal out of the radio The channel guard hang up lead comes out on the power speaker jack on pin 8 GROUND Ground is available at J906 pin 1 Connections are now complete for basic repeater operation Before powering on your repeater go back and check your work Apply power with the controller disconnected and check your power supply connections With a grounded probe touch the PTT pin your MVP should transmit Check to see that your CAS signal goes to approx 7 volts when the squelch opens and goes low when it closes Page 12 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 4 User Guide 5 Appendices 5 1 Terminology and Abbreviations Term CAS CW Digital Audio Delay DAD DTMF ID PTT 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 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 13 4 User Guide 6 Circuit Board 6 1 Interconnections
16. PL DEC aro 4 p28 AUDIO JUMPER 21984 5 p TX AUDIO LED ENABLE HEADER 6 CAS COR ISOLATION REMOTE BASE CONNECTOR PCB REV A B 45V NOTICE EE NOTES NHRC Repeater Controllers 412VO 1 IN OUT O45V THIS DRAWING CONTAINS 444 Micol Road 1 VLED 5VDC for LED power PROPRIETARY INFORMATION WHICH Pembroke NH 03275 g H a a 2 ALL RESISTORS ARE 1 4W IS THE CONFIDENTIAL PROPERTY 603 485 2248 C18 C17 z 5 TOL UNLESS OTHERWISE OF NHRC LLC IT SHALL NOT BE http Awww nhre net 0 1uF 0 1uF C22 C19 C16 STATED COPIED REPRODUCED DISCLOSED Title 2204 3 ALL CAPACITORS ARE 16V PUBLISHED OR USED IN PART OR NHRC 4 MVP Repeater Controller Digital 25V bl ELECTROLYTIC 50V CERAMIC WHOLE WITHOUT THE EXPRESSED BYPASS CAPS PUE UNLESS OTHERWISE STATED WRITTEN PERMISSION OF NHRC LLC Size Document Number Rev SPECIFICATIONS SUBJECT TO CHANGE B NHRC 4 MVP Digital DRAWN BY N1LTL WITHOUT NOTICE OR OBLIGATION Date Thursday March 29 2001 Sheet 1 of 2 C14 1 2 NOTE 0 0068uF FOR FLAT AUDIO RESPONSE R23 REMOVE C14 CHANGE
17. S 64 or other CTCSS decoder 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 2 7 Adjusting the Audio Levels Audio Level Adjustments Poteniomeer Use Primary Receiver Level Secondary Receiver Level Preset all potentiometers to midrange a radio on the primary input frequency send some touch tones and adjust the primary receiver level until DTMF decoding 15 reliably indicated by yellow LED D1 Page 6 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 4 User Guide 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 VRS but probably before the transmitter s deviation 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
18. antalum Cap Panasonic ECS F1CE105K __ jor equivalent C11 1uF 16V Tantalum Cap Panasonic ECS F1CE105K or equivalent C16 1uF 16V Tantalum Cap Panasonic ECS F1CE105K __ jor equivalent C19 1uF 16V Tantalum Cap Panasonic ECS F1CE105K or equivalent 2 6 C5 0 1uF 0 1uF 50V Z5U Ceramic Radial Cap Panasonic ECU S1H104MEA Jor equivalent C13 0 1uF 0 1uF 50V 250 Ceramic Radial Cap Panasonic ECU S1H104MEA equivalent C15 0 1uF 0 1uF 50V Z5U Ceramic Radial Cap Panasonic ECU S1H104MEA equivalent C17 0 1uF 0 1uF 50V Z5U Ceramic Radial Cap Panasonic ECU S1H104MEA equivalent C18 0 1uF 0 1uF 50V 250 Ceramic Radial Cap Panasonic ECU S1H104MEA equivalent C20 O luF 0 1uF 50V 250 Ceramic Radial Cap Panasonic ECU S1H104MEA or equivalent 3 2 14 0 0068uF 0 0068uF 50V X7R Ceramic Radial Cap Panasonic ECU S1H682KBA equivalent C10 0 0068uF 0 0068 50V X7R Ceramic Radial Panasonic ECU S1H682KBA Do Not Populate 4 1 C12 22uF 25V 22uF 25V Aluminum Radial Electrolytic Panasonic 1 220 or equivalent 5 1 C21 33pF 33pF 100V COG Ceramic Radial Panasonic ECU S2A330JCA equivalent 6 1 C22 220uF 25V 220uF 25V Aluminum Radial Electrolytic Panasonic 1 221 or equivalent 7 1 01 LED YEL Yellow T1934 LED Lite On LTL 4253 or equivalent 8 2 02 LED GRN Green 134 LED Lite On LTL 4233 or equivalent D4 LED GRN 134 LED Lite On LTL 4233 or equivalent 9
19. es not sound compressed or clipped Transmitter deviation should be adjusted with a service monitor or deviation meter Transmitter keying is provided by a power MOSFET Q1 Q9 configured in an open drain circuit This can be used to key many transmitters directly The MOSFET essentially provides a closure to ground for PTT For other transmitters the MOSFET can drive a small relay to key the radio Although this MOSFET can handle several amps we recommend that no more than 500 mA of current be drawn through it J4 Primary Radio Port REPEATER Pin i O CAS active high PTT active low Receiver Audio 6 Fan Digital output active low 8 Ground Audio Return 2 2 J3 Secondary Radio Port Connections J3 Secondary Radio Port REMOTE BASE CAS active high PTT active low CTCSS detect active high Receiver Audio Transmitter Audio Ground Audio Return 2 3 JTS64 Primary Radio Port TS 64 Connector Connector JTS64 is a 6pin header that allows the easy installation of an optional Communications Specialists TS 64 for CTCSS decode and encode Consult table JTS64 for hookup information Page 4 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved 4 User Guide The TS 64 must have the JU 2 jumper cut If you want to be able to disable the CTCSS requirement install a switch on the HANGUP lead or you could wire the HANGUP lead to the J4 Fan Digital Output pin to all
20. led later Make note of the connections you disconnect The front panel assembly can be removed by unplugging the cabling and setting it aside out of your way Defeat the RX oscillator control circuit Find and cut the PCB trace that connects J904 pin 2 to hybrid 0902 pin 7 Refer to the service manual PCB layout It is best to cut this trace on the bottom of the PCB There is a via and a small segment of trace leading to pin 7 of the hybrid Cut the trace between the via and hybrid with an X Acto knife See picture below Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 9 NHRC 4 MVP User Guide Strap the RX oscillator always on by placing 10V on the RX oscillator control line You can do this by installing a jumper from J904 pin 1 to J904 pin 2 See the picture for the jumper location Defeat the RX mute circuit at U902 pin 6 Cut the trace from U902 pin 6 to J906 pin 5 It is best to cut this trace at the point that it makes an S pattern near pin 7 of J905 and H 11 This trace runs near a square post J 11 Be certain you are severing the proper connection or CAS circuit could be disabled See picture below J906 J905 Page 10 Copyright 2001 2005 2006 NHRC LLC All Rights Reserved NHRC 4 MVP User Guide If your radio had a CG board installed you will need to Re install R33 a 1K ohm 1 4w resistor from H1 to H2 H1 and H2 are holes in the PCB just behind J906 Be certain the resistor lead does not c
21. oduct 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 2006 NHRC LLC All Rights Reserved Page 21 NHRC REPEATER CONTROLLERS
22. ontact and short against the square post J10 See picture below Your systems board duplexing modifications are now complete Go back and carefully check your work Note 100 inch center header fits nicely into the row of holes denoted on the PCB as H11 through H17 You can install a header here so you can pickup the PTT line without soldering Do this now before you install the System Audio Squelch PCB Re install your System Audio Squelch PCB in the reverse order in which you removed it Be careful to properly re install the insulator over and under the TO 220 voltage regulator transistor Install all other screws previously removed Re test your MVP now It should receive and transmit simultaneously now If you have problem at this point do not proceed until you have the radio working correctly Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 11 4 User Guide 4 Controller Installation and Hookup Install your NHRC 4 MVP controller in place of the Channel Guard Encoder Decoder you have discarded Use the 3 screws leftover from the removal to mount your controller If needed obtain some 6 32 X 1 4 inch pan head screws to mount your controller to the mounting bosses on the MVP Care must be taken to avoid shorting the transistors Q1 Q6 and Q9 which are mounted on the end of the controller next to the inside of radio if your controller was factory assembled with non insulated tab transistors o
23. ook Por NHRC Repeat er Controllers ur 10K 9 R4 THIS DRAWING CONTAINS 444 Micol Road J 05 PROPRIETARY INFORMATION WHICH Pembroke NH 03275 0 1uF IS THE CONFIDENTIAL PROPERTY 603 485 2248 22K OF NHRC LLC IT SHALL NOT http www nhrc net m 22uF COPIED REPRODUCED DISCLOSED 25V COURTESY TONE PUBLISHED OR USED IN PART OR NHRC 4 MVP Repeater Controller Audio e _ AUDIO LEVEL WHOLE WITHOUT THE EXPRESSED VREF GENERATION L WRITTEN PERMISSION OF NHRC LLC Bize Document Number Rev SPECIFICATIONS SUBJECT TO CHANGE NHRC 4 MVP Audio DRAWN NILTL C WITHOUT NOTICE OR OBLIGATION Date Thursday March 29 2001 Sheet 2 of 2 A 8 5 5 E 8 Parts List NHRC 4 MVP User Guide The following is the bill of materials for revision B of the NHRC 4 MVP Repeater Controller Schematic Qty Ref Value Description Mfg Mfg P N Notes 1 11 C1 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K equivalent C2 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K or equivalent C3 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K __ jor equivalent C4 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K equivalent C6 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K or equivalent C7 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K or equivalent C8 1uF 1uF 16V Tantalum Cap Panasonic ECS F1CE105K or equivalent C9 1uF 1uF 16V T
24. ow remote enable disable of the CTCSS requirement If you like you can wire the TS 64 s ENCODE OUT pin into your transmitter s CTCSS input to encode PL on the repeater s output The TS 64 is normally configured with its high pass filter in circuit to remove received CTCSS tones Jumper JP2 on the controller board must be removed when the TS 64 high pass filter is used If the TS 64 is not installed then jumper JP2 must be installed in order for audio to pass through the controller Adjust the CTCSS deviation with R20 on the TS 64 board The ideal deviation for the CTCSS tone is 750 Hz Consult the TS 64 INSTRUCTION SHEET for details on setting the CTCSS frequency JTS64 Primary Radio Port TS 64 Connector Pin Use to TS 64 Signal 1 413 8 Volts 13 8V In 2 Receiver Audio Decoder In 3 Receiver Audio N C 4 Filtered Audio High Pass Filter Out 5 CTCSS Detect RX Mute amp Decoder Out 6 Ground Audio Return Ground amp PTT Input amp Hangup 2 4 J1 amp J2 DAD Connectors The audio delay for the primary radio simply plugs in to J4 The audio delay for the secondary radio plugs in to J5 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 J2 Primary Radio DAD DELAY J1 Secondary Radio DAD RB DELAY 13 8 Volts to Delay Board Audio to Delay Board Audio from Delay Board Ground Audio Return
25. r if you have replaced an insulated tab transistor with a non insulated tab part If so the use of electrical tape or some other insulating material between the transistors and the radio is highly recommended Use connectors to make your connections to the controller and systems board This will make your installation look professional and be more reliable Controllers received for repair with solder on the header pins will have the header pins replaced at the customer s expense connections to the controller are easily available on the System Audio Squelch PCB next to the controller NHRC 4 MVP Signal Name Connection to Custom MVP JA Pin 10 VDC 10 volts is available on the SAS board at J906 pin 6 CAS is available from J906 pin 5 was RX MUTE PTT is available at H17 RX AUDIO The receiver audio is available at J906 pin 4 VSQ HI from Receiver TX AUDIO TX Audio is supplied to the white or yellowish white to Transmitter wire that is or was connected to J13 If this is still connected to J13 disconnect it Note that this wire is MIC HI and J13 is the MIC BIAS voltage supply This disconnects the MIC bias and will defeat the external microphone If a local microphone is desired seek an alternate way to provide audio to the exciter There may be audio loading issues with the local microphone DIGITAL This connection is optional If you desire to use this OUTPUT feature the now unused hang up lead from the old FAN C
26. resent indication CAS from its receiver and supplies transmit audio and PTT to its transmitter The controller requires 13 8 volts DC for power which is provided on the primary radio s connector Be very careful when wiring DC power to the controller reverse polarity will severely damage the controller The connector pinouts are shown in the tables below Consult sections 3 and 4 for specific Custom MVP modification and installation instructions 2 1 J4 Primary Radio Port Connections Receiver audio can typically be taken from the high side of the squelch control This audio must be de emphasized with the controller s de emphasis circuit which provides a 6dB octave slope Optionally audio can be taken from later in the receiver s audio chain where it is already de emphasized Care must be taken that this source of audio is not subject to adjustment by the radio s volume control If the receiver audio has not been properly de emphasized either in the receiver itself or on the controller board the repeater will have a very tinny unnatural sound to it The NHRC 4 MVP repeater controller is shipped with the de emphasis circuit populated on the printed circuit board for main repeater audio and without de emphasis for remote base audio for flat audio response To install the de emphasis filter for the remote base audio two 100K ohm resistors must be removed R10 and R11 and a replaced with a 10K ohm at R11 a 93 1K ohm at R10 and a 0 0068
27. 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 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 VR6 the secondary transmitter master level Enable the secondary transmitter and adjust VR6 for proper transmit deviation similarly to VRS Enable the secondary receiver and adjust VR2 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 receiver audio mix level and may not need to be adjusted from midpoint Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 7 NHRC 4 MVP User Guide 3 GE Custom MVP Full Duplex Modification 3 1 Before You Begin Before you begin with the duplexing modifications and installation of the NHRC 4 MVP repeater controller it is imperative that you verify that your Custom MVP operates correctly This will reduce the amount of time you may have to spend troubleshooting if you do run into problems with the radio modifications or controller installation NHRC assumes no liability for any damages to your Custom MVP or you
28. ture can be answered by telephone support Telephone support is available Monday through Friday from 6 PM until 10 PM Eastern Time Table Of Contents 1 INTRODUCTION 00 2 2 INSTALLATION 000101 3 2 1 PRIMARY RADIO PORT 988 3 2 2 J3 SECONDARY RADIO PORT 4 2 3 JTS64 PRIMARY RADIO PORT TS 64 4 2 4 JI amp J2DAD CONNEGTORS eee ee ee eee S 5 2 5 THE LED STATUS 5 u esse au sess a S aaa qis 6 2 6 USING THE DIGITAL 2 2 D eo eoe eee eaae tee T a see oe A e yb e e eee Y ee uo 6 2 7 ADJUSTING THE AUDIO 1414 6 3 GE CUSTOM MVP FULL DUPLEX MODIFICATION 8 3 1 BEFORE Y OU BEGIN 1 1 1 1 1 1 verte 1 1 1 1 2 1 1 1 a e a aE i aE 8 3 2 DUPLEX 8 9 2 Multi Channel Radios 1 0 0 00003037 boise 8 3 2 2 Antenna Connections 8 3 2 3 Simultaneous Transmit and Receive Modification eene 8 4 CONTROLLER INSTALLATION AND HOOKUDJ 12 5 5 1 000 13 5 1 TERMINOLOGY AND ABBREVIATIONS 13 6 CIRCUIT 0 d 14 6 1 INTERCONNECTIONS 14 Te SCHEMATICS 010 16 8 PARTS LIST
29. valent Q11 2 3904 NPN Transistor Fairchild 2N3904 or equivalent 012 2N3904 NPN Transistor Fairchild 2N3904 or equivalent 19 1 013 2 3906 PNP Transistor Fairchild 2N3906 or equivalent 22K 22K 4W 5 Carbon Film Resistor Yaego CFR 25JB 22K or equivalent R2 22K 22K 4W 5 Carbon Film Resistor Yaego CFR 25JB 22K or equivalent R4 22K 22K 4W 5 Carbon Film Resistor Yaego CFR 25JB 22K or equivalent 21 33K 33K 4W 5 Carbon Film Resistor Yaego CFR 25JB 33K or equivalent R7 33K 33K 4W 5 Carbon Film Resistor Yaego CFR 25JB 33K or equivalent R38 33K 33K 1 4W 5 Carbon Film Resistor Yaego CFR 25JB 33K or equivalent Copyright 2001 2005 2006 NHRC LLC All Rights Reserved Page 19 4 User Guide 22 9 R5 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K or equivalent R10 100K 100K 4W 5 Carbon Film Resistor Yaego CFR 25JB 100K 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 R13 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 Jor 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 10
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