[Amps] Henry Hum

johndtate at post.com johndtate at post.com
Sun Feb 21 17:15:52 PST 2010


>>>>When AM became obsolescent, so did the choke-input filter. For 
today's
amps a simple C-input is best.    73, Bill W6WRT

That statement is no longer rings true.  AM has come out of the closet 
again and is many hams prefered mode.  It certainly is my prefered mode 
for casual ragchewing.  SSB lends it self well to DX phone.

At rate, I have the hum from the Henry tamed and what's left seems to 
be 60 cycle hum.  I understand from 2 other people that had this type 
of hum that replacing the stock torroidal filament choke with a bifilar 
wound filament choke did the trick for them.  I'm going to try that and 
I'll report back with my findings.

73, John KX5JT










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