I would like to add a few things to the mix. The inductors are right 
the cap is too. But I like a large cap on both sides of the 
inductors and a bypass .01 across the fan leads as close as possible 
to the fan.

Also no one mentioned if the fans were electronicly comuntated or 
have brushes.
73
Coy 


--- In [email protected], Paul Guello <[EMAIL PROTECTED]> 
wrote:
> 
> I put a dc fan on the portable repeater and now I get a slight buz 
on the audio.  Anybody have any idea how to get rid of the buz?  I 
tried putting a capacitor across it and an inductor in series, do I 
need a larger inductor?
> 
> Paul, KB9WLC
> 
> 
> ---------------------------------
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