Hello Stefan, VLF,
Unfortunately no decode here (only strange message like this "!?" "KN" and
other similar)
Also I was make stupid mistake - when I qsy from 8270.1 to 6470.1 I forgot to
change filter freq! :((
Now it is corrected. May be new experimets will be more successful...
73!
> Пятница, 14 апреля 2017, 18:44 +03:00 от Jacek Lipkowski
> <[email protected]>:
>
> 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.
> >
> >
> >
> >
> >
> >
|
