Re: VLF: Carrier on 6470.005 Hz - and 6469.9975 Hz

[Markus Vester <markusvester@aol.com>]

Thanks again Paul! Using 0.21 A cutrrent into 8 m effective height, my radiated power should have been 2.1 uW EMRP (or 3.8 uW dipole-referenced ERP).

Note that though the phase is reproducable, it still is not absolute as I have not attempted to calibrate the near-field pickup probe. I am actually using my normal VLF receive antenna, with two transformers and an amplifier which may even be partially saturated. For the same reason, the 150° phase difference to Stefan's signal cannot be directly related to geometrical path difference.

Best 73,
Markus       


-----Ursprüngliche Mitteilung-----
Von: Paul Nicholson <vlf0403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 15. Apr 2017 9:44
Betreff: Re: VLF: Carrier on 6470.005 Hz - and 6469.9975 Hz

Markus wrote:

> My carrier was on air from 13:30 until 20:35 UT.

Averaged 0.06 fT, S/N 13.0 dB in 39.7 uHz, phase -88.6 degrees.

Not bad for 1028 km at 6470 Hz, and I suppose about 5 or 10uW ERP?

Here is 4 hours of Stefan's signal yesterday

http://abelian.org/vlf/tmp/170414a.png

--
Paul Nicholson
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