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Q1
3N35
12k
220
0.5mH
220p
4k7
4k7
2u2
2k7
4k7
0.1uF
1n
2k7
1k8
500kHz
100k
1
Input
Q3
Q2
2N2219
3N35
100
6k8
1mH
12k
1mH
220p
1n
6k8
2k2
3k3
2u2
2u2
4k7
2k7
Q6
Q5
2N2905
2N2219
220
150
1k
1k
12k
15k
10uF
Q4
2N161
+15V
3
68k
8k2
10uH
2.2uF
1N483
4.7uF
10k
270
NOISE
2.2uF
LIMITER
CONTROL
Q7
2N2905
5k
- AVC
4k7
DELAY
82k
1k
J1
1k5
6
13
- AVC
+ AVC
-6.8V
560
560
22k
4k7
10k
20k
K1
Q9
2N1613
100
Q10
°C
2N2905
5k
3k3
14
3
50k
SQUELCH
PRC-41 3d IF AMPLIFIER
feb 2018 / kb
24.5Vdc
5
15
Aux audio
8
Audio
auto relay
12
11
+24.5V on Rx
K1
7
reserved for
squelch
disable
1uF
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