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NHRC-4 User Guide
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FO R DEEMP HASI ZED
AUDI O RES PONSE:
INSTA LL C11 AND
CHANG E R2 0 TO 51 0K.
RX A UD IO
AUDI O MUTE
VR EF GENE RA TION
BUFFER
MAIN
LE VEL
INI T
NO TE:
MASTER LEVEL
REMOTE BAS E
RX A UD IO
BUFFER
RE MO TE BA SE
LE VEL
RE MO TE BAS E
MAI N
MAI N R X
AUD IO MUTE
RE MOTE BAS E RX
RE MO TE BASE TX AUDIO
NO TE:
MAIN R X AUDIO
DE LA Y CONNE CT O R
MAIN RX
AUDIO LE VEL
AUDIO LE VEL
CO URTESY T ONE
MAIN
MASTER LEVEL
MAIN TX AUDIO
CO NNEC TOR
RX A UD IO D ELAY
RE MOTE BASE
TX AUDIO AMP
TX AUDIO AMP
RX AUDIO
RX A UDIO
NOTICE
THIS DRAW ING CO NTAINS
PROPR IETARY INFOR MATIO N W HI CH
I S THE C ONFID ENTIAL PRO PERTY
CO PIED, R EPRO DUCED, D ISC LO SED,
PUB LIS HED OR US ED IN PART OR
W HO LE W ITHO UT THE EXPRESS ED
O F NHRC LLC. IT SHALL NO T BE
W RI TTEN PERMISSION O F NHRC LLC.
SPE CIFICATIONS SUBJECT TO CHANGE
W ITHOUT NOTI CE OR OBL IG ATION.
PCB REV D
1.) All resistors 1/4W 5% tol.
unless otherwise stated .
2.) All c apacitors are 16V
electrolytic / 50V ceram ic unless
otherwise stated .
NO TES:
FO R DEEMP HASI ZED
AUDI O RES PONSE:
INSTA LL C4 AND
CHANG E R5 TO 5 10 K.
NHRC-4 (Audio)
D1
NHRC-4 Repeater Controller (Audio)
415 Fourth R ange Road
Pem b roke, NH 03275
603-485-2248
B
2
2
W ednesday, O cto ber 26, 2005
http://www.nhrc .net
Title
Size
Document Numbe r
Rev
Date:
Sheet
of
D ECODE_A UD IO
TX_AUDIO
RB_ TX_AUDIO
MUTE
DIS C_AUDI O
RB _DISC _A UDIO
RB _MUTE
B EEP
+5V
+12 V
VR EF
+ 12 V
V REF
V REF
V REF
VR EF
V REF
+12V
V REF
+12V
+12V
R6
10 0K
1
2
J 5
HEADER 4
1
2
3
4
Q1 3
2 N7000
2
3
1
-
+
U1D
T L064
13
12
14
R35
100K
1
2
R 15
100K
1
2
R 40
10K
1
2
R 39
1 00K
1
2
R 23
33 K
1
2
R13
22K
1
2
R18
22K
1
2
R22
10K
1
2
R2 5
100K
1
2
C8
0.1 uF
1
2
R11
22K
1
2
C 14
0 .1uF
1
2
VR 3
10 K POT
1
3
2
Q4
MPF1 02
3
1
2
R12
10K
1
2
R17
10K
1
2
+
C3
1uF
1
2
+
C10
1uF
1
2
VR 6
10 K POT
1
3
2
+
C7
22uF
25V
1
2
VR5
500 K POT
1
3
2
VR4
10K P O T
1
3
2
+
C 12
1uF
1
2
+
C13
1uF
1
2
C17
0.1 uF
1
2
JP 3
JUMPER
1
2
C11
0.0 068 uF
1
2
R 20
1 00K
1
2
R21
10 0K
1
2
+
C 5
1 uF
1
2
Q 12
2N7 000
2
3
1
-
+
U1A
T L064
2
3
1
4
11
-
+
U1B
TL 064
6
5
7
-
+
U1C
TL064
9
10
8
R14
100 K
1
2
R3 2
10 0K
1
2
R 8
33 K
1
2
R7
10K
1
2
Q7
MPF 102
3
1
2
+
C6
1uF
1
2
+
C9
1uF
1
2
VR2
500 K POT
1
3
2
VR1
10K P O T
1
3
2
+
C2
1uF
1
2
+
C 1
1uF
1
2
C4
0.0 068 uF
1
2
J 4
HEADER 4
1
2
3
4
R 5
1 00K
1
2
Page 14
Copyright
2001, 2005, NHRC LLC. All Rights Reserved.
Содержание NHRC-4
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