[Elecraft] K3 Low Pass Question

[Jim Brown]

On Fri, 18 Jun 2010 05:04:28 -0700 (PDT), David Windisch wrote:

>I lived <1500' from an am/fm/tv broadcast hotspot in Cincinnati and enough rf
>came in the pipe to activate the reverse-power cutback/shutdown on a TS440. 
>A Johnson MatchCarton or a generic lopass would take care of the situation.

Yes, depending on their circuitry, some antenna tuners may help reject out of 
band signals and harmonics. 

>Had rfi from 1360-am and 700-am with '1000D's.  An ICE ambc-rejection filter
>took care of that one.

Good advice. The ICE filters are not the world's greatest, but the AM BC filter 
is fairly good. I needed one when I lived in Chicago, and the two that I own 
measure fairly well. If you buy one, DO check it for proper tuning -- I've seen 
significant QC problems with several filters I've bought directly from ICE. 

73, Jim Brown K9YC