received the 20170413 transmission on 6470.1Hz in qth Warsaw (message sent
to Stefan for confirmation):
found rank 2 ber 4.0375e-01 Eb/N0 3.3 M -1.230747461e+00 [xx] ps [ 3 -150 -150
-150 -150]
carrier phase: 3.1
carrier Eb/N0: 2.4
carrier S/N: 12.98 dB in 34.7 uHz
elapsed 228
seems there is room for a few extra characters :)
VY 73
Jacek / SQ5BPF
On Thu, 13 Apr 2017, DK7FC wrote:
Date: Thu, 13 Apr 2017 23:51:15 +0200
From: DK7FC <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: VLF: EbNaut on 6470.1 Hz
VLF,
OK, there are still some improvements to do on the new system but now these 8
stacks (8 x 33 T106-52 cores inside the field, they
have a weight of 8.13 kg!) are inside the field. The actual resonance frequency
is 20 Hz down but that's OK for tonite.
At least the antenna current stays at 460 mA for tonite.
Let's try a first EbNaut message on 6.47 kHz (not the first for Paul and me but
for Eddie and maybe Jacek...):
f = 6470.100000 Hz
Start time: 13.Apr.2017 22:00:00 UTC
Symbol period: 36 s
Characters: 2
CRC bits: 18
Coding 16K21A
Duration: 8h
Antenna current: 460 mA
73, Stefan
Am 13.04.2017 16:51, schrieb DK7FC:
Eddie,
http://www.g3zjo.talktalk.net/vlfgrabber.htm
The line is quite evident i find! I message decode will demonstrate it
later :-)
73, Stefan
Am 13.04.2017 10:30, schrieb g3zjo:
I see from your Grabber that you ceased at 07:30. Shame because I
needed a little longer to confirm the
line in my 47uHz, it looks promising though.
73 Eddie G3ZJO
On 12/04/2017 22:50, DK7FC wrote:
Now i'm down on 6470 Hz again.
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