[Elecraft] K3S Proper Grounding
Dauer, Edward
edauer at law.du.edu
Sat Sep 26 20:07:34 EDT 2015
My problem with stray RF isn¹t the TV or other electronic appliances, but
with the exterior motion sensor lights. 500 Watts on 20 meters turns one
of the three pairs on (always the same one). Since they are hard-wired
into the house, clip-on ferrite would be hard to do. I can live with it
if I have to. . . only effect is to scare the wildlife. But, suggestions,
anyone?
Ted, KN1CBR
>------------------------------
>
>Message: 19
>Date: Sat, 26 Sep 2015 11:03:47 -0700
>From: Phil Hystad <phystad at mac.com>
>To: w3fpr at embarqmail.com
>Cc: elecraft at mailman.qth.net, ae4pb at carolinaheli.com
>Subject: Re: [Elecraft] K3S proper grounding?
>Message-ID: <A7DB1EB0-C476-4005-969E-54A0ECFA2AEE at mac.com>
>Content-Type: text/plain; charset=utf-8
>
>I had the same problem and it occurred on 40 meters regularly as well.
>Low power (~80 to 100 watts) did not seem to bother the TV but it was a
>regular problem at power?s much over 100 watts.
>
>My solution which seems to work flawlessly so far with max power of 600
>watts is that I took a whole bunch of the clip on wrap around conductor
>ferrites and put it on the power cord. They run for about half the
>length of the 120 vac power cord to the TV set, about two dozen ferrites.
>
>I had the same problem with the Bose table-top radio upstairs. Key down
>at >100 watts would invariably turn on the radio. But, the Bose
>table-top radio uses the power cord as a default FM antenna so wrapping
>in ferrites required another antenna solution. So, I created a makeshift
>FM antenna up on the roof and ran RG-6 cable to it where it connects with
>standard TV like RG6 cable connectors. This fixed that problem too.
>
>73, phil, K7PEH
More information about the Elecraft
mailing list