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R510 (Subaudible
Tone Level Adj.)
R507 (DTMF
Level Adj.)
IC-O2AT
(with the DTMF unit)
1C401
(HD44795 CPU)
(When the DTMF unit or
Tone-Burst unit is removed.)
FORT,
RL101
(Power Source
Switching Relay)
oes
(Volume Control
and Power Switch)
R126 (Squelch Control!)
1C101
(TA75358P
AF
Low-Pass Filter)
1C105 (TA75393P Battery
Voltage Detect)
-1C102 (4071 T/R Control)
1C103 (4069 Beep Osc.
Squelch Control)
BT101
(Memory Backup
Battery)
Voltage Regulator Circuit
Ada
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