Download NHRC-4/M2 Installation and Setup Guide

NHRC-4/M2
Installation
and
Setup Guide
Hardware Version: Rev. B.
Guide Version: 2005-Aug-31
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
[email protected].
Support for the controller is available by email or telephone. Please direct softwarerelated questions via email to [email protected]. Please direct hardware-related
questions via email to [email protected] . Your question(s) will be answered
promptly.
Questions of a more urgent nature 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 ................................................................................................................................2
2.
INSTALLATION..................................................................................................................................2
2.1
PRIMARY RADIO PORT CONNECTIONS ............................................................................................2
2.1.1 Option 1: Use an interface cable...............................................................................................2
2.1.2 Option 2: Modify the MASTR II System Board. ........................................................................3
2.2
SECONDARY RADIO PORT WIRING..................................................................................................4
2.3
TS-32/TS-64 HOOKUP ....................................................................................................................5
2.3.1 TS-64 Notes ...............................................................................................................................5
2.3.2 TS-32 Notes ...............................................................................................................................6
3.
INSTALLING THE NHRC-4/M2 INTO THE MASTR II...............................................................7
3.1
3.2
3.3
3.4
4.
APPENDICES.....................................................................................................................................10
4.1
5.
THE LED STATUS INDICATORS.......................................................................................................7
INSTALLING THE NHRC-DAD WITH THE NHRC-4/M2..................................................................7
USING THE DIGITAL OUTPUT ..........................................................................................................8
ADJUSTING THE AUDIO LEVELS ......................................................................................................8
TERMINOLOGY AND ABBREVIATIONS ...........................................................................................10
CIRCUIT BOARD .............................................................................................................................11
5.1
INTERCONNECTIONS .....................................................................................................................11
6.
SCHEMATICS ...................................................................................................................................12
7.
PARTS LIST .......................................................................................................................................15
NHRC LLC LIMITED WARRANTY ......................................................................................................17
Copyright  2001, 2005, NHRC LLC. All Rights Reserved.
Page i
NHRC-4/M2 User Guide
1. Introduction
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.
2. Installation
This section of the User Guide describes the electrical interfaces used to connect the
controller to:
• Power and primary repeater (the GE MASTR II),
• 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 NHRC4/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. All of the controller’s signals, for
the primary and secondary radios, as well as the digital output are presented at either J908 or
J909.
2.1
Primary Radio Port Connections
The NHRC-4/M2 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
2.1.1
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
Pin #
1
2
3
Page 2
MASTR II
Signal
MIC HI
J902 #6
CAS
J904 #9
MIC LO
J902 #5
Copyright  2001, 2005, NHRC LLC. All Rights Reserved.
NHRC-4/M2 User Guide
2.1.2
Option 2: Modify the MASTR II 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 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
2
Discriminator Audio
Transmit Audio
3
CAS
4
5
6
7
10V Regulated
no connection
PTT
CG Encode
Delayed PTT
Ground
9
NHRC-4/M2 Use
System Board Modification
Add Wire to MIC HI On Exciter (J902-6)
Cut existing trace to P908-3.
Add Wire to CAS on IFAS (J904-9)
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 II service manual for information on these jumpers.
Dissecting an old control cable makes an easy job of attaching your secondary radio to the
MASTR II. In an E-chassis MASTR II, a bit of clever wiring in the systems board can allow
a repeater on the "top deck" and the secondary, 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
P909
Pin #
1
2
3
4
5
6
7
8
J901
Frequency
(control cable)
Select
Pin #
Secondary port CAS
F8
15
Secondary port PTT
F7
14
Secondary port CTCSS detect
F6
13
Secondary port receiver audio
F5
12
Secondary port transmitter audio
F4
11
Digital output
F3
10
no connection
F2
9
Unused, ground to select F1
F1
8
NHRC-4/M2 Use
It is extremely important that the radio attached to the secondary radio port be provided with
a common ground from the MASTR II. The "A-" 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
TS-32/TS-64 hookup
2.3
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.) Wire JTS32 to
the TS-32/TS-64 as follows:
JTS32 Connections
JTS32
TS-32
Pin #
Signal
1 +V POWER
2 CTCSS DECODER INPUT
3
4
5
6
7
Description
+10 volts to CTCSS board
receiver audio to CTCSS decoder
receiver audio to audio filter input
TO AUDIO FILTER INPUT
(separate lead for TS-64)
FROM AUDIO FILTER OUTPUT filtered audio to controller
decode signal from CTCSS decoder
CTCSS DETECT
See important warning below!
CTCSS ENCODER OUTPUT
CTCSS tone to transmitter
- GROUND & HANG-UP
Ground
WARNING:
DO NOT APPLY VOLTAGE TO THE CTCSS DETECT INPUT!
This input is pulled low by the CTCSS decoder when CTCSS is NOT PRESENT. It will float high
when CTCSS is detected. Application of voltage to this input will destroy Q4 and render the
controller 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 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
NHRC-4/M2 User Guide
Adjust the CTCSS deviation with R20 on the TS-64 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-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 NHRC-4/M2.
Adjust the CTCSS deviation with the R29 on the TS-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 details on setting the CTCSS frequency.
Page 6
Copyright  2001, 2005, NHRC LLC. All Rights Reserved.
NHRC-4/M2 User Guide
3. Installing the NHRC-4/M2 into the MASTR II
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.
3.1
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 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. These 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.
3.2
Installing the NHRC-DAD with the NHRC-4/M2
J2 Primary Radio DAD
J3 Secondary Radio DAD
Pin
1
2
3
4
Use
+13.8 Volts to delay board
Audio to delay board
Audio from delay board
Ground/Audio Return
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.
It is 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 opendrain output can be used to gate the HOOKSWITCH 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
VR1
VR2
VR3
VR4
VR5
VR6
Use
Primary Receiver Level
Secondary Receiver Mix Level
Primary Receiver Mix Level
Beep Tone Mix Level
Primary Transmitter Master Level
Secondary Transmitter Master Level
Preset all potentiometers to midrange. Key a radio on the primary input frequency, send
some touch-tones, and adjust VR1 (the primary receiver level) until DTMF decoding is
reliably indicated by yellow LED D5.
Note: If VR1 is set too high, a crackling noise may be heard in the transmitted audio during
the hang time. Reduce the level set by VR1 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 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 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 VR5.
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  2001, 2005, NHRC LLC. All Rights Reserved.
Page 9
NHRC-4/M2 User Guide
4. Appendices
4.1
Terminology and Abbreviations
Term Description
CAS Carrier Activated Squelch, where receipt of a signal,
with or without CTCSS tones will activate the
controller.
CW Continuous Wave signals, commonly using “Morse
Code.” The term “CW” 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) Digital Audio Delay (DAD) removes squelch crashes
and allows DTMF tones to be fully muted.
DTMF Also known as “Touch Tone” codes.
ID Identification
PTT Push-to-Talk
Page 10
Copyright  2001, 2005, NHRC LLC. All Rights Reserved.
NHRC-4/M2 User Guide
5. Circuit Board
5.1
Interconnections
Connector
Name
Purpose
P908
“REPEATER”
P909
“REMOTE BASE”
Connects the secondary repeater transmit and
receive audio, PTT, and CAS signals for the
radio to the controller.
J1
“AUX”
Supplies MIC HI and CAS signals for
unmodified MASTR Iis (with no system board
modifications for the NHRC-4/M2)
J2
“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 Digital Audio Delay (NHRC-DAD) board
for the secondary radio port.
JTS64
“JTS64”
Interfaces a Communications Specialists TS-64
to the controller for CTCSS detection.
Connects the primary repeater transmit and
receive audio, PTT, CAS, fan control, and
power signals to the controller.
This is a detailed top view of the Revision “B” printed wiring board for the NHRC-4/M2
Repeater Controller.
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.
A
B
C
1
E
NOTE:
FOR FLAT AUDIO
RESPONSE:
REMOVE C8,
CHANGE R21
AND R22 TO 100K
0.0068uF
R35
1
D
PCB REV B
C22
2
2
510K
FC=1/6.28R*C
R=510K
C=0.0068uF
VDD
4
C18
2
1
0.1uF
R36
-
3
C21
2
1
U4A
TL064
11
MAIN
RX AUDIO
BUFFER
R31
1
2
0.1uF
J2
VDD
VREF
1
2
3
4
R27
100K
2
HEADER 4
MAIN RX AUDIO
DELAY CONNECTOR
2
1
VCC
3
Q7
MPF102
3
R15
10K
DECODE_AUDIO
100K
1
3
1
+
1
1
1
1
MAIN RX
AUDIO MUTE
C5
1uF
VR3
10K
POT
2
1
R7
R9
2
JP1
JUMPER
1
3
2
22K
INIT
3
R11
10K
C11
2 2
1
6
+
1
100K
VR5
500K
POT
2
1
2 2
MUTE
MAIN TX AUDIO
MASTER LEVEL
3
+
2
1
3
Q2
2N7000
R16
33K
1uF
5
VREF
+
MAIN RX
AUDIO LEVEL
+
2
VREF
1
2
51K
2
1 1
1uF
2
C1
+
MAIN
RX AUDIO
LEVEL
VR1
10K
POT
2
2
4
4
1
DISC_AUDIO
7
1
U4B
TL064
2
TX_AUDIO
C6
1uF
MAIN
TX AUDIO AMP
NOTE:
1
C3
VR6
500K
POT
R20
R10
1 1
2
51K
13
VREF
-
12
1
U4D
TL064
1
2
3
4
R26
100K
2
2
+
8
U4C
TL064
1
2
REMOTE BASE
TX AUDIO AMP
NOTES:
1.) VDD = +12VDC
2.) VCC = +5VDC
3.) VREF = +6VDC (or 1/2 VDD)
4.) ALL RESISTORS ARE 1/4W
5% TOL. UNLESS OTHERWISE
STATED.
5.) ALL CAPACITORS ARE 16V
ELECTROLYTIC / 50V CERAMIC
UNLESS OTHERWISE STATED.
R6
+
1
REMOTE BASE RX
AUDIO MUTE
2
1
2
1
2
22K
1
1
2
100K
2
VCC
VDD
2
VCC
VDD
1
VDD
2
C4
1uF
R18
1
BEEP
R43
10K
2
C17
22uF
25V
C9
0.1uF
VR4
10K
POT
2
1
NOTICE
2
COURTESY TONE
AUDIO LEVEL
VREF GENERATION
B
NHRC Repeater Controllers
444 Micol Road
THIS DRAWING CONTAINS
Pembroke, NH 03275
PROPRIETARY INFORMATION WHICH
603-485-2248
IS THE CONFIDENTIAL PROPERTY
http://www.nhrc.net
OF NHRC LLC. IT SHALL NOT BE
Title
COPIED, REPRODUCED, DISCLOSED,
NHRC-4/M2 Repeater Controller (Audio)
PUBLISHED OR USED IN PART OR
WHOLE WITHOUT THE EXPRESSED
Size
Document Number
WRITTEN PERMISSION OF NHRC LLC.
B
NHRC-4/M2 (Audio)
SPECIFICATIONS SUBJECT TO CHANGE
DRAWN BY: N1LTL
WITHOUT NOTICE OR OBLIGATION.
Date:
Sheet
Friday, November 06, 1998
2
2
of
R8
22K
3
+
GND
A
2
RB_TX_AUDIO
C7
1uF
1
2 2
VREF
1
-
1
3
1
1
RB_MUTE
100K
C23
1uF
10
REMOTE BASE
RX AUDIO DELAY
CONNECTOR
Q6
MPF102
Q11
2N7000
R34
R42
10K
+
9
VREF
HEADER 4
3
1
1
1uF
J3
VDD
VREF
VDD
2 2
33K
1
3
REMOTE BASE
RX AUDIO
BUFFER
FC=1/6.28R*C
R=510K
C=0.0068uF
14
+
R12
10K
C12
+
1uF
1
2
3
510K
+
REMOTE BASE
RX AUDIO
LEVEL
2
VR2
10K
POT
2
2
1
2
R19
1
RB_DISC_AUDIO
REMOTE BASE TX AUDIO
MASTER LEVEL
2
FOR FLAT AUDIO
RESPONSE:
REMOVE C15
CHANGE R30
AND R32 TO 100K
0.0068uF
+
C10
2
1
C
D
E
1
Rev
B
C
D
E
1
R39
33K
VLED
VLED
1
B
1
A
VCC
R5
470
VSS
2
MUTE
100K
10
VCC
RB_MUTE
7
8
BEEP
STD
ST/GT
EST
OE
OSC1
OSC2
IC
IC
VSS
STD LED
VCC
11
12
13
14
Q1
Q2
Q3
Q4
15
17
16
1
VCC
5
6
9
M-8870-01
DTMF DECODER
5
PIC16F84-04/P
Y1
1
2
1
Q1
2N7000
2 2
R21
1
CAS
2 2
10K
10K
Q3
2N3904
VDD
C8
0.1uF
R23
10K
R13
300K
C20
2 PICCLK
4
COR
R14
STD
R17
10K
2
18
2
Q1
Q2
Q3
Q4
3
R32
1
VDD
1
STD
PTT_EN
RB_COR
RB_MUTE
RB_PTT_EN
DOUT_EN
BEEP
COR
VREF
IN+
INGS
3
OSC1/CLKI
OSC2/CLKO
6
7
8
9
10
11
12
13
4
1
2
3
DECODE_AUDIO
Q4
2N3904
2
PL_DEC
1
16
15
PICCLK
INT/RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
Q1
Q2
Q3
Q4
MUTE
1
uP RESET
VCC
17
18
1
2
3
D2
LED
GRN
2
2
1
R30
39K
14
3 2
RA0
RA1
RA2
RA3
TOCKI/RA4
VCC
MAIN
COR LED
1
VDD
1
MCLR/VPP
D5
LED
YEL
1
4
D6
1N5226B
3.3V
U2
2
U3
1
1 2
Q10
2N3906
1
10K
3
2
4
2 2
2
2
R40
1
1 2
1
VCC
PCB REV B
R2
470
PIC uP
3
R1
470
VLED
JUMPER
LED ENABLE JUMPER
2
2
DISC_AUDIO
2 1
Q5
IRF510
RB_PTT_EN
100
1
RB_CAS
2 1
Q8
IRF510
1
10K
100
MAIN
PTT DRIVER
REMOTE BASE
PTT DRIVER
2
R37
10K
2
3
J1
TX_AUDIO
CAS
RB_PL_DEC
Q13
2N3904
1
2
NOTES:
1.) VDD = +12VDC
2.) VCC = +5VDC
3.) VLED = +5VDC for LED power
4.) ALL RESISTORS ARE 1/4W
5% TOL. UNLESS OTHERWISE
STATED.
5.) ALL CAPACITORS ARE 16V
ELECTROLYTIC / 50V CERAMIC
UNLESS OTHERWISE STATED.
R28
1
2 1
3
DOUT_EN
Q9
IRF510
100
P909
RB_CAS
RB_PTT
RB_PL_DEC
DIGITAL OUTPUT DRIVER
RB_DISC_AUDIO
RB_TX_AUDIO
VCC
IN
OUT
3
VCC
C14
220uF
25V
+
C19
1uF
C13
1uF
BYPASS CAPS
A
B
VDD
VDD
VCC
VCC
1
+
2
2
+
GND
1
C15
0.1uF
2
1
1
C16
0.1uF
2
1
VDD
REMOTE BASE
CONNECTOR
NOTICE
U1
LM7805CT
1
2
DOUT
2
1
2
DOUT
AUX MASTR II
INTERFACE
1
2
3
4
5
6
7
8
HEADER 8
Q12
2N3904
2 2
VDD
TS32/64
CONNECTOR
1
2
3
HEADER 3
R33
10K
RB_COR
R41
R29
1
PTT_EN
VCC
D4
LED
GRN
RB_PTT
R25
1uF
REMOTE BASE
COR LED
D3
LED
RED
PTT
C2
1
3
RX_AUDIO
RX_AUDIO
FILT_RX_AUDIO
PL_DEC
PL_ENC
R4
470
1
2
1
2
3
4
5
6
7
HEADER 7
TS32/64
BYPASS
JP3
JUMPER
JUMPER
1
2
REMOTE BASE
PTT LED
D1
LED
RED
2
VDD
JTS32
MAIN
PTT LED
+
REPEATER
CONNECTOR
R3
470
1
2
2
HEADER 9
1
JP2
1
VCC
R24
0
1 2
PTT
2
1
JUMPER
3
2
VLED
1
1
JP4
2
VLED
1 2
R22
0
VLED
1
2 CAS
2
VDD
PL_ENC
DELAYED_PTT
MAIN
CAS/COR ISOLATION
33pF
TX_AUDIO
2
1
3.579MHz
2
3
1
1
2
3
4
5
6
7
8
9
1
3
R38
0
1 2
RX_AUDIO
P908
C
GND
REMOTE BASE
CAS/COR ISOLATION
NHRC Repeater Controllers
444 Micol Road
THIS DRAWING CONTAINS
Pembroke, NH 03275
PROPRIETARY INFORMATION WHICH
IS THE CONFIDENTIAL PROPERTY
603-485-2248
http://www.nhrc.net
OF NHRC LLC. IT SHALL NOT BE
Title
COPIED, REPRODUCED, DISCLOSED,
PUBLISHED OR USED IN PART OR
NHRC-4/M2 Repeater Controller (Digital)
WHOLE WITHOUT THE EXPRESSED
Size
Document Number
WRITTEN PERMISSION OF NHRC LLC.
SPECIFICATIONS SUBJECT TO CHANGE
B
NHRC-4/M2 (Digital)
WITHOUT NOTICE OR OBLIGATION.
Date:
Sheet
Monday, January 18, 1999
D
E
1
DRAWN BY: N1LTL
1
of
2
Rev
B
NHRC-4/M2 User Guide
7. Parts List
The following is the bill of materials for revision “B” of the NHRC-4/M2 Repeater Controller.
Item Qty. Ref.
1
11 C1
C2
C3
C4
C6
C7
C8
C9
C11
C16
C19
2
6
C5
C13
C15
C17
C18
C20
3
2
C14
C10
4
1
C12
5
1
C21
6
1
C22
7
1
D1
8
2
D2
D4
9
2
D5
D3
10
1
D6
11
3
JP1
JP2
JP3
12
2
JTS64
J3
13
2
J1
J2
14
1
J4
15
3
Q1
Q6
Q9
16
3
Q2
Q5
Q7
17
2
Q4
Q3
18
4
Q8
Q10
Q11
Q12
19
1
Q13
20
3
R1
R2
R4
21
3
R3
R7
R38
Schematic
Value
1uF
1uF
1uF
1uF
1uF
1uF
1uF
1uF
1uF
1uF
1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.0068uF
0.0068uF
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
25V
25V
YEL
GRN
GRN
RED
RED
3.3V
Description
1uF 16V Tantalum Cap
1uF 16V Tantalum Cap
1uF 16V Tantalum Cap
1uF 16V Tantalum Cap
1uF 16V Tantalum Cap
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 Z5U Ceramic Radial Cap
0.1uF 50V Z5U Ceramic Radial Cap
0.1uF 50V Z5U Ceramic Radial Cap
0.1uF 50V Z5U Ceramic Radial Cap
0.1uF 50V Z5U 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 C0G Ceramic Radial Cap
220uF 25V Aluminum Radial Electrolytic Cap
Yellow T1¾ LED
Green T1¾ LED
Green T1¾ LED
Red T1¾ LED
Red T1¾ LED
3.3V 5% 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, .100" 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 ¼W 5% Carbon Film Resistor
22K ¼W 5% Carbon Film Resistor
22K ¼W 5% Carbon Film Resistor
33K ¼W 5% Carbon Film Resistor
33K ¼W 5% Carbon Film Resistor
33K ¼W 5% Carbon Film Resistor
Mfg.
Panasonic
Panasonic
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.
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
Notes
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
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
NHRC-4/M2 User Guide
22
9
23
14
24
3
25
26
1
5
27
28
29
30
31
32
33
1
1
1
1
1
1
4
34
2
35
1
36
37
38
1
2
1
R5
R10
R11
R12
R13
R14
R15
R35
R36
R6
R8
R16
R19
R20
R21
R24
R25
R29
R30
R31
R33
R37
R40
R9
R18
R26
R23
R17
R22
R27
R32
R34
R28
R39
U1
U2
U3
U4
VR1
VR2
VR3
VR4
VR5
VR6
Y1
100K
100K
100K
100K
100K
100K
100K
100K
100K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
100
100
100
93.1K
470
470
470
470
470
470K
39K
TL064
LM7805CT
M-8870-01
PIC16C84-04/P
10K
10K
10K
10K
200K
200K
3.579MHz
POT
POT
POT
POT
POT
POT
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
100K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
10K ¼W 5% Carbon Film Resistor
100 ¼W 5% Carbon Film Resistor
100 ¼W 5% Carbon Film Resistor
100 ¼W 5% Carbon Film Resistor
93.1K ¼W 5% Metal Film Resistor
470 ¼W 5% Carbon Film Resistor
470 ¼W 5% Carbon Film Resistor
470 ¼W 5% Carbon Film Resistor
470 ¼W 5% Carbon Film Resistor
470 ¼W 5% Carbon Film Resistor
470K ¼W 5% Carbon Film Resistor
39K ¼W 5% Carbon Film Resistor
Quad Op-Amp
5V 1.0A Voltage Regulator
DTMF Decoder
PIC Microcontroller (Blank)
10K 6mm Carbon Trimpot
10K 6mm Carbon Trimpot
10K 6mm Carbon Trimpot
10K 6mm Carbon Trimpot
200K 6mm Carbon Trimpot
200K 6mm Carbon Trimpot
3.579545MHz Crystal
Additional Items
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
Yaego
TI
Nat'l Semi
Teltone
Microchip
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
ECS
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-100K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-10K
CFR-25JB-100R
CFR-25JB-100R
CFR-25JB-100R
MFR-25FBF-93K1
CFR-25JB-470R
CFR-25JB-470R
CFR-25JB-470R
CFR-25JB-470R
CFR-25JB-470R
CFR-25JB-470K
CFR-25JB-39K
TL064CN
LM340T-5.0
M-8870-01
PIC16F84-04I/P
EVN-D2AA03B14
EVN-D2AA03B14
EVN-D2AA03B14
EVN-D2AA03B14
EVN-D2AA03B25
EVN-D2AA03B25
ECS-35-17-4
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
see note 1
or equivalent
see note 1
see note 1
or equivalent
or equivalent
or equivalent
or equivalent
or equivalent
or equivalent
or equivalent
NHRC-4/M2 PCB REV B
18 Pin DIP Socket
14 Pin DIP Socket
NHRC
Mill-Max
Mill-Max
NHRC-4/M2 PCB
REV B
110-99-318-41-001 use at U3/U4
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.
NHRC-4/M2 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
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