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Re: LF: Re: DK7FCs 5th VLF experiment...

To: [email protected]
Subject: Re: LF: Re: DK7FCs 5th VLF experiment...
From: Stefan Schäfer <[email protected]>
Date: Wed, 19 May 2010 11:20:07 +0200
In-reply-to: <46148C4AA5164D30B4E3186D6C534215@JimPC>
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Hello Jim,

Aah, ok. Well, i haven't done this test. As usual, i took all the time to transmit although i wanted to prepare that test. The QRN level was to high and Markus told me that he is not visible on my grabber so i thought there will be nothing to receive :-( And the QRN itselfe is not the best way to check receiver performance. But we will do that in the next tests! Maybe the ALPHA stns are an alternative but even tose were OFF during the last test...

73, Stefan/DK7FC


Am 18.05.2010 22:55, schrieb James Moritz:
Dear Stefan, LF Group,


Which vertical antenna do you mean?

73, Stefan/DK7FC


Well, on 15/05 you wrote:
If the wind is stable and i have enough time i will do first receiving tests using the TX antenna! This >is to prepare the first VLF QSO above 100km ;-)

I was just curious to know if you tried this, and if so, how loud the results were... Back in 2000, I did some tests on 136k and 73k from the 100m high Decca Navigator mast at Puckeridge. The receive SNR was actually very good, thanks to the quiet rural location, but it did need about 40dB of attenuation at the RX input.

Cheers, Jim Moritz
73 de M0BMU



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