[Hallicrafters] SX-42 Low Gain

[HallicrafterSX28 at aol.com]

The FM IF circuits(coils) operate at 10.7 MHz and are separate from the AM  
IF which is 455khz.So probably have a problem with the 455KHz IF which could be 
 a bad alignment ,leaky silver micas inside the IF transformers (that can 
kill  the "Q' of the IF transformers) or anything !!!.usually it's the other way 
round  AM is ok but the FM is weak.Anyway be prepared for a lot of frustrating 
 evenings/afternoons or whatever as this radio has a reputation for all sort 
of  weird problems.
Your first order of business would be to replace ALL of the paper caps and  
the out of tolerance resistors,and this radio has no shortage of them !! Some 
of  the capacitors and resistors are buried so deep and out of reach places 
that  will put your patience and abilities to the ultimate test!
Anyway good luck,if the radio is in decent cosmetic condition with all the  
parts and knobs ,and the price is right I'd go for it.Just finished recently  
working on one .
Regards
AMK"Nick"
 
In a message dated 2/11/2009 4:30:01 AM Pacific Standard Time,  
joeconnor53 at yahoo.com writes:

I have a  chance to pick up an SX-42 at a pretty good price. The owner tells 
me that it  plays well in FM mode but has low gain in AM mode (no further 
details). That's  a problem I have not encountered before. Before I plunk down any 
cash for this  set, I'm looking for some ideas as to what might cause that 
problem. As  always, thanks for your help.

Joe  Connor





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