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Re: Topband: RF choke/balun

To: Arthur Delibert <>
Subject: Re: Topband: RF choke/balun
From: Rob Atkinson <>
Date: Sat, 16 Sep 2017 07:40:49 -0500
List-post: <>
Unless you like listening to noise you don't use an inverted L on 160
(or 80) for receiving.


On Sat, Sep 16, 2017 at 6:58 AM, Arthur Delibert <> wrote:
> I think that’s right if the only issue is your own transmit signal bouncing
> back from the antenna junction and traveling along the exterior of the
> feedline.  But for receiving, I think a choke at each end of the feedline is
> important unless you’re in an exceptionally low noise location.  K9YC
> recommends putting a choke at the antenna end of the feedline, and I’ve
> found it makes quite a difference in the amount of local noise on the
> received signal.  If I understand it right, the outside of the feedline
> picks up the noise signal and carries it to the antenna junction, from where
> it gets mixed in with the desired signal.
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