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in series with the RF path.
keyed» i t provides a closed c ir c u it fo r the trans
m itter lamp and the QSK module.
in turn keys the antenna relay RL-1.
RF from the exciter flows into J l , through
the proper input c ir c u it , through C12, 13 to
the cathodes of tubes V1-V4.
vides bias fo r the tubes.
PC 1-4 are p arasitic chokes.
from the tubes, through C35 to the tank c ir c u it
L6, 17, C36, C37.
imum transfer of RF to the antenna through J3
RFC 3 is to protect the antenna from D C poten
t ia l .
I INTERCONNECTION DIAGRAM
<-.«.AT-l2 0 0 >
The tank is tuned fo r max
EXCITER
wd c?)
When the exciter is
The QSK module
Diode D12 pro
The RF comes
RF
ACC Y OUT
RG58-?
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