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Telamon · November 13th 06, 03:56 AM posted to rec.radio.shortwave

In article .com,
wrote:

Bob wrote:
Terry -

Have you found any specific wall warts that you would consider
reasonably electrically quiet?

Thanks again, Bob

Even with wall warts that appear to be identical, the RFI varies a
great deal. I go to the local good will store once every couple of
weeks with my trusty DX398 and check out their constantly changing
stock for quite ones. Stay away from switch mode wall warts. They are
very light weight and are RFI demons.

Very good observation. The supplies that are linear have transformers,
which have some weight to them are heaver than the more efficient
switching but RF noisy type.

--
Telamon
Ventura, California