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Re: VLF: 300 mA on 6470 Hz

from [DK7FC] [Permanent Link][Original]
To: [email protected]
Subject: Re: VLF: 300 mA on 6470 Hz
From: DK7FC <[email protected]>
Date: Thu, 05 Oct 2017 10:17:29 +0200
In-reply-to: <[email protected]>
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Hi Paul,

Am 05.10.2017 09:16, schrieb Paul Nicholson:

  Day 4th:       -23.26 dB in 1Hz,  phase 102.0 deg
Ehm, that is strange. Because i have not been on air yesterday in daytime. I stopped the carrier at 7 UTC. See my grabber http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html 
What happened??


> f = 6470.005000 Hz
> Start time: 04.October.2017  17:00:00 UTC
> Symbol period: 240 s
> Characters: 1
> CRC bits: 0
> Coding 8K19A

Got a strong decode:

 carrier Eb/N0: 7.9 dB
 carrier S/N:  -31.16 dB in 1Hz, -65.14 dB in 2.5kHz
 phase: -157.3

Not sure why the phase is completely different to that of the
recent carrier measurements.
Miracles! I'm excited. Maybe we should forcus a bit more on the 46 km band :-) 
Hurray!

73, Stefan
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