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Re: Topband: Loop on Ground receiving antenna.

To: topband@contesting.com
Subject: Re: Topband: Loop on Ground receiving antenna.
From: Jerry and Faye <RadioXX@charter.net>
Date: Tue, 23 May 2023 10:26:44 -0500
List-post: <mailto:topband@contesting.com>
You are correct.  It is rubbish.  I built it and recorded measurements because there was so much hype about it.  I got exactly what I expected.  A high angle omnidirectional antenna is not a DX receiving antenna.  However if you are into NVIS it actually will improve S/N for those signals (which is why some people think it is a low noise receiving antenna).  It gets rid of all those low angle signals.

Jerry, K4SAV


On 5/23/2023 10:05 AM, Roger Kennedy wrote:
I just tried making a Loop on the Ground to see if it would be any lower
noise than my 6ft 160m Loop up in the loft.

I followed several people's suggested dimensions . . . so 15 feet each side,
feeding it in the middle of the side pointing West with a 450:50 ohm
transformer . . . And it's rubbish!

A local station (in the right direction) on my 6ft vertical loop in the loft
needs a 20dB preamp to bring him to the same level as on my Dipole (and the
noise is 6 to 10dB lower).

But on the LOG he was 30dB weaker, that's WITH the 20dB preamp!  So the S/N
would be rubbish.  Anyone else tried something similar on 160m?

Roger G3YRO


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