On Sat, 17 Apr 2004 07:17:08 GMT, Ken wrote:

I want to see if my new switching supply creates "hash" on any band.

Is it enough to hook up to a dummy load and listen to the difference
between battery power and the power supply in the middle of every band
of interest? Should I disable any controls or automatic adjustments?

What does hash sound like? I have been fortunate not to have
experienced it (to my knowledge).

Ken KC2JDY


Ken
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You might check the qst review of switching power supplies that
appeared 4 or 5 years ago. They tested for "hash." They found "hash"
was far less a problem when a transceiver was in the receive mode,
pulling few amps, versus the transmit mode, when hash was much more
serious, but a moot point, since the receive apparatus is muted.

Bob
k5qwg