1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
15K
R4
750K
R7
820K
R3
5.6K
R9
7.5K
R5
100K1%
R6
.001u
1%
NPO
C4
100K1%
R10
.001u
1%
NPO
C5
56K
R11
62K
R8
10K
R1
10K
R2
P1
P2
TONE IN
P3
TP5
GND
GND
GND
GND
VA
GND
GND
2
1
3
PL1
.47u
C2
.47u
C3
470R
R15
4.7u
C7
10K
11
33
22
R13
*
F1
*
F2
*
D2
*
D3
*
Z3
*
Z4
*
F3
*
F4
*
D4
*
D5
0R
R17
0R
R21
0R
R25
0R
R26
500K
1
1
3
3
2
2
R27
10K
1
1
3
3
2
2
RP2
10K
1
1
3
3
2
2
RP3
10K
1
1
3
3
2
2
RP4
*
11
33
22
10K
RP1
200K
R34
.47u
C21
3.3K
R41
33K
R39
100K
R40
1K
R35
10K
R43
B25
Q1
200K
R38
4.7u
C27
5460
G
S
D
Q2
VA
BALANCED OUT
UNBALANCED OUT
BALANCED IN
UNBALANCED IN
560p
C16
560p
C20
560p
C24
.47u
C15
.47u
C18
.47u
C22
LM660
-
+
2
3
1
4
1
1
U1:1
LM660
-
+
6
5
7
U1:2
LM660
-
+
9
10
8
U1:3
LM660
-
+
13
12
14
U1:4
VA
.47u
C9
.47u
C19
4.7u
C26
560p
C25
BLACK
J2:2
GREEN
J2:4
YELLOW
J2:5
BLUE
J2:6
RED
J2:3
WHITE
J2:1
YELLOW
J1:5
GREEN
J1:4
WHITE
J1:1
BLACK
J1:2
RED
J1:3
BLUE
J1:6
.47u
C12
620R
R16
.47u
C14
AGC
BYPASSED DC/RING VOLTAGE
UNBALANCED IN
MIXER1 IN
UNBALANCED IN
MIXER2 IN
560p
C17
33K
R12
*
R30
VA
FOR RF BYPAS
LIGHTNING PROTECTION
10K
R28
MIXER/NOTCH/BP/AGC/ADJUSTABLE GAIN OUT
MIXER/NOTCH/BP
AGC/ADJUSTABLE GAIN OUT
AGC PATH
ADJUSTABLE
GAIN PATH
NOTCH/MIXER
NOTCH/MIXER
WITHOUT AGC
WITH AGC
10K
R33
ADJUST
FREQUENCY
OUTPUT GAIN
NOTCH
0R
R22
10K
R31
DEPTH
*
R24
*
R19
*
R36
*
R42
10K
11
33
22
R14
1
2
3
4
5
6
T1:1
1
2
3
4
5
6
T2:1
LM7815
IN
1
G
N
D
2
OUT
3
VR1
VER
A
B
C
R5
R9
R6
R10
R11
5.6K
7.5K
1.8K
2.7K
1.2K
33K
100K1%
100K1%
100K1%
100K1%
475K1%
475K1%
56K
56K
51.1K1%
*
Z1
*
Z2
600 OHM
600 OHM
*
C29
*
C30
2.2u
C1
2.2u
C23
JP1:1
JP1:2
JP1:3
JP2:1
JP2:2
JP2:3
JP3:1
JP3:2
JP3:3
JP4:1
JP4:2 JP4:3
BP OUT
JP5:1
JP5:2
HP OUT
JP5:3
LP OUT
JP5:4
HP FILTER
BP FILTER
LP FILTER
JP6:1
JP6:2
JP6:3
1u
C31
VAN
VAN
VAN
VAN
VAN
VAN
EARTH GND
TP1
27K
R32
560p
C8
560p
C10
560p
C11
560p
C13
EP
CJS
2012-08-08
AWS
2014-09-15
D-1
1 of 2
7735
MIDIAN ELECTRONICS, INC.
DATE:
DESIGN:
UPD BY:
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PROJECT NUMBER
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Copyright © 2014
NFBF 10
-
+
3
1
4
5
2
LM321
U2
