IC7 TK10931
IC8 NJM13404V
IC11 TDA1905
IC13 KIA7808
or KIA7808AP
IC9, 10 TC74HC4066AFT
or TC74HC4066AFS
IC12 LM317BT
or LM317T
67
1
24
12
13
OSC(B)
OSC(E)
MIX Output
Vcc
AM IF Input
AM IF Decoupling
FM IF Input
FM IF Decoupling 1
FM IF Decoupling 2
LIM Output
Quad Input
FM Det. Output
RF Input
GND
Comp. Output
Comp. Input
Noise Amp. Output
Noise Amp. Input
AM AGC Input
AGC Amp. Output
RF AGC Output
RSSI Output
AM SW
AM Det. Output
1
2
3
4
5
6
7
In
/
Out
1
Out
/
In
1
Out
/
In
2
In
/
Out
2
Cont
2
Cont
3
Vss
14
13
12
11
10
9
8
VDD
Cont
1
Cont
4
In
/
Out
4
Out
/
In
4
Out
/
In
3
In
/
Out
3
+
+
A
B
1
2
3
4
8
7
6
5
Vcc
B
Output
B
-
Input
B
+Input
A
Output
A
-Input
A
+Input
GND
Output
VS
Bootstrap
Threshold
Muting
Invert
In
Output
Non
Invert
In
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND
GND
GND
GND
GND
GND
GND
GND
1 2 3
1
Adjust
2
V
out
3
V
in
1 2 3
1
Input
2
GND
3
Output
Summary of Contents for PRO-197
Page 15: ...PRINTED CIRCUIT BOARD Main PCB Top View 15 ...
Page 16: ...Bottom View 16 ...
Page 19: ...19 ...
Page 20: ...WIRING DIAGRAM 20 ...
Page 73: ......
Page 74: ......
Page 75: ...RadioShack Corporation Fort Worth Texas 76102 08A08 ...
