[TowerTalk] Broadcast Band Filter

[Mike Ryan]

Thanks for the suggestions..very nice of you all. I have a friend near
Raleigh who is sending me another filter that he no longer uses since he has
moved away from the problem source. I will try it any way as it is less
labor intensive at least for the moment. Otherwise a balun will be in play
as suggested. THANKS!  - Mike, K4CVL

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Jim
W7RY
Sent: Tuesday, February 27, 2024 3:50 PM
To: towertalk at contesting.com; towertalk at groups.io
Subject: Re: [TowerTalk] Broadcast Band Filter

I agree. I had this exact problem on 80 meters when living close to AM 
broadcast. Put a balun at the feedpoint, and the problem went away.
I suggest to install a DC to ground balun at the antenna. This will 
present a low impedance connection to ground for the broadcast band.

Granted this is 160 meters your talking about. I believe I traced my 
issue to the rain gutters around the house.

Good luck with your issue.
Jim W7RY


On 2/27/2024 12:47 PM, john at kk9a.com wrote:
> I have no filter suggestions but just be aware if the interference is from
> rectification at your station, filters will not help.
>
> John KK9A
>
> From:	"Mike Ryan" K4CVL wrote:
>
> During the last 160m SSB contest it became obvious that I am in need of a
> serious broadcast band filter.  Though I currently have one in-line that I
> bought a dozen years ago (cannot recall what brand) I appear to be getting
> some bleed through from 1420 AM. If only it were good music, or even bad
> music. But the 'fire and brimstone' programs and subject matter are more
> than I can take. Suggestions?  - Mike, K4CVL
>
>
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-- 
Thanks and 73, Jim W7RY

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