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Re: VLF: 8269.997 Hz

To: [email protected]
Subject: Re: VLF: 8269.997 Hz
From: DK7FC <[email protected]>
Date: Mon, 25 Feb 2019 23:10:32 +0100
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Hello Riccardo,

Thank you for the transmission in daylight. It was interesting to compare the different antennas. I analysed just two hours centered at 12 UTC and looked on all 3 antennas separately.

E field: 15.16 dB SNR (in 138.9 uHz)
NE loop: 17.61 dB
NW loop:  -0.2 dB

mixing both H field antennas:
NE+0.2*NW: 18.58 dB

Adding the E field:
NE+0.2*NW+0.4*E(rotated by -30 deg): 19.10 dB in 138.9 uHz

Then, 4 hours centered at 12 UTC gives 22.09 dB in 69.4 uHz.
And 8 hours centered at 12 UTC gives 24.99 dB in 34.7 uHz

Between 8 and 16 UTC you could have transferred a 50 character EbNaut message over to my RX!

73, Stefan



Am 25.02.2019 14:10, schrieb Riccardo Zoli:

Markus, VLF

Yes, indeed: with DL0AO and Stefan's RDF there are no doubt :-)
Yesterday the carrier was produced feeding my antenna with about 650mA but I think the noise was too high to attempt an EbNaut transmission.


All the best

73 de Riccardo IW4DXW



Il giorno Dom 24 Feb 2019, 17:21 Markus Vester <[email protected]> ha scritto:
Looks like Riccardo is sending a carrier on 8269.997 today.

Good luck,
Markus
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