I am in the midst of restoring a Hallicrafters S-40A. I
think someone has changed the stop on the bandspread
capacitor. AFAIK all H receivers have the bandspread set at
0 and this represents minimum capacitance. On this RX 0 has
the bandspread cap completely closed and the frequency
calibration can not be brought in. If set at minimum it sets
up fine. There are other signs that the bandspread cap has
been fooled with.
I have seen one picture on the web which looks like the
dial pullies have been strung to correct a similar problem.
This is not what is shown in any of the S-40 series service
material. My question is: will someone confirm that the S-40
series bandspread cap should be at minimum with the dial at
0 and has anyone else encountered this problem?
The peg which forms the stop seems to be firm in its
socket. If its sticking out on the wrong side I may have to
restring the dial pullies to compensate. Thanks for any
help.


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Richard Knoppow
Los Angeles
WB6KBL