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Re: LF: VLF - G3XIZ

To: [email protected]
Subject: Re: LF: VLF - G3XIZ
From: Stefan Schäfer <[email protected]>
Date: Fri, 31 Dec 2010 18:01:17 +0100
In-reply-to: <1567AC3A96624647ADC1F52EF1A1E625@JimPC>
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Congratulations to the new record Chris, Jim,

What is the exact distance? Some 10 km i think. http://no.nonsense.ee/qthmap/

Chris, can't you use the inv-L and the balloon antenna in parallel? This lowers the voltage and needed L, so less losses. And you can make QRO without increasing the HV problems. If you come back to the same antenna voltage, you will surely improve the ERP! And the resonance is rather less affected by the vertical antenna movement due to wind since the inv-L part stays constant! If you increase the wire length to 60m (limit in UK) you would increase the efficiency by up to 50% and lower the voltage by 20%!
Nice success just some minutes before 2011 :-)

73, GL, Stefan/DK7FC




Am 31.12.2010 14:54, schrieb James Moritz:
Dear Chris, LF Group,

I seem to have a trace on your frequency - see attachment. SNR is currently around 15dB with 1.5millihertz FFT resolution. It definitely wasn't there before ;-)

Cheers, Jim Moritz
73 de M0BMU


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