[Elecraft] Slighty off topic - 80 meter second harmnic how to stop

[David Cutter]

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" <jim at audiosystemsgroup.com>
To: <elecraft at 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