I understand that small ferrites are easily overloaded and become non-linear
generating harmonics and injecting a signal back into the wire from whence
they came. You might have sleeve chokes on all sorts of wires, keying
lines, keyboard cables, video cables, the wall clock, lighting, etc.
David, G3UNA
----- Original Message -----
From: "Jim Brown" <j...@audiosystemsgroup.com>
To: <elecraft@mailman.qth.net>
Sent: Tuesday, February 23, 2016 4:42 AM
Subject: Re: [Elecraft] Slighty off topic - 80 meter second harmnic how to
stop
When I posted on this issue to another list, W3LPL responded that it's
fairly common for harmonics with this sort of characteristic to be
generated in active electronics like switching power supplies. Sort of
identifying which is the culprit and choking every cable connected to it,
there's no solution.
73, Jim K9YC
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