Hello Paul,
Thanks for the overview, good to have. The phase is always very
interesting to compare, we can now say it varies less than +- 10 deg,
not bad.
I am in contact with RN3AUS. So far he got no decode. He provided the
txt files containing the daily data to me. We already thought about
asking you for help. But i like to transmit (at least) for 10 nights
before i give up.
Yesterday we got a set of 6 days. I stacked them in Markus' stacking
tool for windows. The individual days are normalised by the square of
the rms voltage. I tried to get a decode with and without normalisation
and with all six days and also with just the 5 best days. No decode.
Unfortunately the QRN gets higher each day in the moment. 4 days could
have been enough but that was based on days like 7th/8th.
We will see. It is a good tutorial to train patience :-)
Meanwhile the day time transmissions will give faster results and are a
chance for more stations.
73, Stefan
PS: I thought your E field is not available. Is the 10...12th with or
without E field?
Am 12.10.2017 08:36, schrieb Paul Nicholson:
Stefan wrote:
> f = 6470.100000 Hz
> Start time: 05.October.2017 16:00:00 UTC (daily)
> Symbol period: 20 s
> Characters: 16
> CRC bits: 19
> Coding 16K21A
> Duration: 12h
Here's the full set of overnight transmissions:
5th/6th Eb/N0 -2.2 dB phase -148.4 deg
6th/7th Eb/N0 +0.9 dB phase -165.4 deg
7th/8th Eb/N0 -0.5 dB phase -163.1 deg
8th/9th Eb/N0 -4.4 dB phase -150.2 deg
9th/10th Eb/N0 -2.9 dB phase -146.5 deg
10th/11th Eb/N0 -3.1 dB phase -158.8 deg
11th/12th Eb/N0 -3.5 dB phase -157.1 deg
Stacked: Eb/N0 6.3 dB phase -156.6 deg
Looks like we were lucky with the signal 6/7th.
--
Paul Nicholson
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