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Delivery-date: Fri, 08 Jul 2005 23:57:17 +0100
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Date: Fri, 08 Jul 2005 22:57:03 +0200
From: Wolf DL4YHF <dl4yhf@freenet.de>
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Subject: Re: LF: TA Last night
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Lawrence Mayhead G3AQC schrieb:

> Hi Joe ,
>
> The capture I sent with my last mail was timed 04:00 UTC on the 8th July.
>
> By the way, I belive that the mains earth is the best available since 
> it extends for many yards,even miles, from the antenna site.In a built 
> up area it will extend all round the antenna. It certainly is the best 
> for me, much more current than all my radials put together. 
>
> 73 Laurie. 
>
>
>
Concerning mains earth for the TX antenna: Exactly the same here. I 
trried buried radials; radials hanging around everywhere in the trees 
and the underwood; radials connected to the metal fence around the 
football field; ....  - nothing worked as good as mains as extra large 
counterpoise (difference: 0.something A versus 1.9 A antenna current)

But a totally different story for RX: I use a large relay contact to 
OPEN the connection between "mains earth" and "antenna earth" during 
reception, because the mains earth is terribly noise-polluted.

73,  Wolf  DL4YHF .