HA-RF100S(J)
21
6. Block diagrams
Speakers
Receiver (Headphones)
FILTER
VCO
F.F
DEC
UHF
MODULE
TUNING CONTROL
FM
DET
RF
AMP
FM
IF
FM
AF
1
3
8
12
10
6
23
21
19
18
15
13
14
FM
MIX
FM
OSC
PRE
AMP
+
11
IC1: TA8122AF
VOL.CONTROL
Ni-Cd Batteries
1.2V x2
3
Lch
POWER
INDICATOR
ST.
INDICATOR
FILTER
FILTER
1
Rch
HEADPHONE
AMP
IC2: TDA2822M
UHF MODULE
AUTO SCAN
CONTROL
Q3, HCF4060
ANT
x1
x2
1st IF
D4
R10
L1
L2
RF AMP
TUNING
MIX
2nd IF
DET
10.7MHz
10.7MHz
456kHz
DEC
TA 8122 AF
LOCAL
OSC
R12
ST
D5
R10
POWER
VCC
SW3
L4
L4
x3
FILTER
R13, C6, C8
MUTING
Q4
BASS
BOOSTER
R15, C27
ATTENUTOR
VR3, R1, C28
AUDIO AMP
LA 4555
SP
SPEAKER
SW1
VR2