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D. Adjust –
Adjust the cores and trimmers of antenna, R.F., and oscillator
coils for maximum deflection. Part number of the core and
trimmer is as following table:
STAGE ANT. STAGE R.F. STAGE OSC. STAGE
ADJ. CORE TRIM CORE TRIM CORE TRIM
BAND A L1 VC1 L5 C101 L9 C105
BAND B L2 VC1 L6 C102 L10 C106
BAND C L3 VC1 L7 C103 L11 C107
BAND D L4 VC1 L8 C104 L12 C108
NOTE: The oscillator adjustments is performed first. The R.F. is adjusted next
to obtain maximum amplitude. The antenna cores are adjusted last. Adjust
cores for low end of band and trimmers for high end of band.
-5 B.F.O. ALIGNMENT
NOTE: The non-metallic alignment tool is required for complete
alignment. The mode switch on the front panel should be
positioned S.S.B. / C.W. A knob of the B.F.O. pitch on the front
panel should be positioned one o’clock.
A. Signal Coupling.
Receive one of a broad cast frequency with exactitude by an
antenna through the antenna terminal.
B. Connect V.T.V.M. or equivalent.
Connect a P type vacuum tube voltmeter or equivalent probe
between a side of T6 secondary coil and chassis earth. Set the
vacuum tube voltmeter range on 1.5 volt.
C. Adjust -
Adjust the core of the B.F.O. coil T5 for a zero-beat note by loud
speaker. Adjust the core of coil T6 for a maximum deflection on
vacuum tube voltmeter or equivalent.
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