Hi Paul, ULF,
Am 29.01.2017 18:26, schrieb Paul Nicholson:
> From the known decoded EbNaut messages, what was the SNR at
> Renato or on your side?
Nothing detectable here or at Cumiana so I can't answer the
question of how many days need stacking. Until there is some
glimpse of a signal, it is completely unknown. I can only
estimate a lower limit.
Yes, we don't even know if the night could be better than the day.
Between 2016-06-26 13:00 and 2016-07-31 08:00 you transmitted
carrier with 30mA antenna current. I received and stacked
over 34 days of carrier (about 15dB stacking gain) with no
sign of signal. You estimated 100nW ERP.
Now you can do 150mA current - about 14dB gain over July's
signal. Plus, improvements here to filtering and blanking
may add 2 or 3dB more.
Plus the lower QRN!
We can in two days exceed the stacked signal for the whole
of July. Also with your higher ERP I can see the signal each
day at Bielefeld to check the phase.
Yes, Wolf's RX is a nice feedback channel for the daily tests.
Yes, more adding is the only way to find out what happens between QRB
of 3 and 5 lambda, and 8.8 lambda!
I think we should try some daytime carrier repeats. Already we
know there is nothing after 2 days so we will need at least
4 days to get a hint of signal and then at least 10 days to
collect enough signal for some measurements. It is surely
certain that we will eventually pick up the signal after
I assume you have saved the data from Cumiana to add the signals that i
transmitted so far at 150 mA?
Jan, 20th, 8...20:00 UTC 2970.000 Hz
Jan, 21th, 8...17:00 UTC 2970.000 Hz + 17...20 UTC 269.9975 Hz
Jan, 22th, 8...14:45:20 UTC 2970.000 Hz, reconstructed carrier of EbNaut
(8K19A, CRC16, 7ch, 40s, message: 'F/DK7FC')
Jan, 24th, 8... 16:00 UTC 2970.000 Hz, reconstructed carrier of EbNaut
(16K25A, CRC18, 3ch, 30s, message 'ULF')
Jan, 25th, 7... 16:20 UTC, 2970.000 Hz, reconstructed carrier of EbNaut
(16K25A, CRC16, 5ch, 30s, message 'DK7FC')
That's already 42 hours in daylight (8...17 UTC), a peak shown in 6.6
uHz. And there is nothing at all?
Can we assume that Renato's RX has the full sensitivity on 2970 Hz? The
sferics always appear very strong. I clearly expected to see Markus on
8270 Hz in JN38OO, even with my resonated antenna, because the sferics
still looked so strong. But there was not a trace at all! It is hard to
imagine that Wolf can decode the messages 'easily' and Renato can't seea
faint peak. But maybe, that's how it is. I should do a holiday weekend
again, in 4 lambda distance...
If the wx permits, i will run a carrier tomorrow on 2970.000 Hz between