Hi Ken,
Yes, there is a strong interaction. In principle my active antenna does not
differ to the PA0RDT Whip.
But the dimension of the interaction depends on the kind of your TX antenna. I
think a high vertical does more interact than I short vertical with many
toploads, as long as the RX ant is not placed under these toploads...
73, Stefan/DK7FC
PS: See the pic of my last report to get an impression of the interaction...
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Ken
Gesendet: Sonntag, 27. Dezember 2009 13:21
An: [email protected]
Betreff: Re: AW: LF: Influence of a TX antenna to a small rx antenna
Hello Alan.
A very interesting paper of yours, is it likely that there will be the same
interaction between a T antenna and the PA0RDT Mini Whip?
73.
Ken
M0KHW
----- Original Message -----
From: "ALAN MELIA" <[email protected]>
To: <[email protected]>
Sent: Sunday, December 27, 2009 11:51 AM
Subject: Re: AW: LF: Influence of a TX antenna to a small rx antenna
Hi Stefan I hope it does not give you indigestion :-))
Good luck with it.....all LF sites are different so in general require
different detailed solutions. It seemed generally to be sufficient to
de-tune the unused antenna to reduce the interaction to low levels.
Best Wishes for Dx in the New Year
Alan G3NYK
--- On Sun, 27/12/09, Stefan Schäfer <[email protected]> wrote:
> From: Stefan Schäfer <[email protected]>
> Subject: AW: LF: Influence of a TX antenna to a small rx antenna
> To: [email protected]
> Date: Sunday, 27 December, 2009, 10:55
>
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> Hi
> Alan, tnx, i have
> printed your article and will read it now at breakfast
> ;-)
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> Perhaps
> I will come back
> with some questions... J
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> 73,
> Stefan/DK7FC
>
> -----Ursprüngliche
> Nachricht-----
>
> Von:
> [email protected]
> [mailto:[email protected]] Im Auftrag von ALAN
> MELIA
>
> Gesendet:
> Sonntag, 27. Dezember
> 2009 01:32
>
> An:
> [email protected]
>
> Betreff: Re:
> LF: Influence of a TX
> antenna to a small rx antenna
>
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> Hi Stephan yes the aerialls will
> be very close
> compared with the wavelength so they will interact
> particularly is tuned. We
> did some measurements ar Finbar's location several
> years ago
>
> http://www.alan.melia.btinternet.co.uk/aecouple.htm
>
>
>
> The interaction was measured on an antenna RF
> bridge, and demonstrates
> the coupling between two wires.
>
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> Best Wishes
>
> Alan G3NYK
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