HT-40

[Alan W. Fremmer]

Ladies & Gentlemen:
 
Time to consult the experts.  Have been having problems with hum on  the 
carrier of the HT-40.  Replaced all four electrolytic capacitors and  that seems 
to have eliminated the hum when the transmitter is in the TUNE  mode.  However, 
when switched to AM there is still a residual buzz.   On CW, the note sounds 
clean.  All tubes were checked and the weak ones  replaced.  Any suggestions 
as to where to look next.  As usual, am  indebted to all of you for your broad 
knowledge and help in the past.
 
73, Alan - KB2HEI 

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