Radio Shack PRO-197 User Manual

BPF
Attenuator
D1,D2
RF Amp
Q7
RF Amp
Q3,Q4
1st Mix
IC2
2nd Mix
Q9
2nd IF Amp
Q10
Noise Amp
IC6a
Ceramic
Filter
CF1
AGC Amp
Q11
AM/FM
Switching
IC9a,9b,10a,10d
Pre Amp
IC8a
Mute
IC10b,Q32
Audio Amp
IC11
Voltage
Regulator
IC12
Regulator
Switching
IC13
DC-DC
Converter
IC5
AGC Amp
Q8
Switching
Q5,Q6
Switching
Q2
Band Select
Att. Control
IC1
Switching
Q21
VCO1
Q20
VCO2
Q22
Switching
Q23
Buffer
Amp
Q24
PLL
IC4
Low-Pass
Filter
Q25,Q26
Buffer
Amp
Q30
VCO3
Q29
Low-Pass
Filter
Q27,Q28
LCD
Keyboard
CPU
IC307
Voltage
Detector
IC303
Memory
IC301
SAME Data
Filter
IC306c,d
WX Alert Data
Filter
IC306a,b
Hi Speed Data
Filter
IC305a
Low Speed
Data Filter
IC304,305b
Oscillator
IC4
3rd IF Amp Noise Amp
3rd Local Mixer
Quadrature Detector
IC7
Buffer Amp
IC8b
PWR
DC
13.8V
J1
J3
Ceramic
Filter
CF2
Filter
Switching
Q31
25-54MHz
108-225MHz
225-406MHz
406-512MHz
764-1300MHz
1st IF
(380.650-380.86875MHz)
XF 1
2nd IF
21.4MHz
XF 2
X2
20.945MHz
455kHz
3.3V
12.75MHz
X 1
11.0592MHz
X301
PLL Data
SQ IN
Filter SW
FM/AM/Digital
Mute
Keytone
3.3V
Data
Cont.Data
1st
Local
2nd
Local
Zeromatic
Switching
Q1
Switching
Q14,D23
Switching
Q13,Q17
2nd IF Amp
Q15,Q16
Detector,
Comparator
D27,28,IC3
SQ 2
B+ (8V)
LED Driver
Q302,303
304,306,307
LED
Reset
Q305
Switching
Q12
Scan Cont.
Search Cont. LD
Switching
Q18,Q19
ANT
DSP
IC310
Flash
Memory
IC311
CODEC
IC313
Voltage
Regulator
IC309
Voltage
Regulator
IC308
Shift
Resister
IC312
3rd Local
Swithing
IC9c,9d
3rd Local Cont.
Voice
X302
18.432MHz
SQUELCH
VOLUME
PC/IF
J201
Power SW
VR201
VR202
J202
J2
EXT SPK
Speaker
4
BLOCK DIAGRAM

Radio Shack PRO-197 Specifications

General

Brand	Radio Shack
Model	PRO-197
Category	Scanner
Language	English