Re: Easy, Inexpensive Cooling Fan, Excelway Case

John P
 

On Wed, Jun 27, 2018 at 07:28 am, Jack Purdum wrote:
Is the fan quiet, or does the rcvr pick it up?
I tried a couple of fans from old PC supplies. They were all very noisy. What I did to solve the problem was to put a resistor (maybe 10 ohms; don't remember and not taking the radio apart) in series with the fan and a fairly hefty capacitor across the motor. The fan still moves more than enough air and is both electrically and acoustically quiet.
 
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John - WA2FZW

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