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• MAIN-A/MAIN-B UNIT
(BOTTOM VIEW)
REFERENCE FREQUENCY
OSCILLATOR (X2)
AF AMP
(IC15)
VCO
AF/TONE FILTER
(IC16)
AF MUTE SWITCH
(Q35)
Ext. MODULATION
LINE SWITCH
(Q31)
REFERENCE OSCILLATOR
MODULATION BUFFER
(IC19)
D/A CONVERTER
(IC18)
EXPANDER
(IC17)
ANALOG SWITCH
(IC14)
D/A CONVERTER
(IC20)
DRIVE AMP
(Q8)
RF AMP
(Q2)
1ST MIXER
(Q3)
2ND IF FILTER
(For wide mode)
(FI2)
2ND IF FILTER
(For narrow mode)
(FI6)
+5V LINE REGULATOR
(Q27,Q28)
T8 LINE REGULATOR
(Q25)