CASSIANIUS:
Hacker RP 77mb audio amp .
CASSIANIUS:
MW superhet radio TA7642 zn414
CASSIANIUS:
Perdio fanfare audio amplifier.
CASSIANIUS:
TA7642 / ZN414 simple superhet.
CASSIANIUS:
TA7642 Superhet transplanted into a Perdio case.
CASSIANIUS:
TA7642 based Denco coil Superhet
CASSIANIUS:
TA7642 / ZN414 circuit