Impressive. That's within a decibel of the limit.
The TX power is 30 watts. Less than 10 should give
valid decodes.
On Fri, 27 Nov 2015, Markus Vester wrote:
First three decodes tonight:
2015 Nov 27/28
start Eb/N0 time offset
UT dB seconds
2030 2.2 1.2
2100 -0.9 1.2 (after notching QRM)
2130 5.7 1.0
The delay seems to be constant now.
The 21:00 sequence was first not decoded, obviously due to QRM from a lonely QRSS "GH"
from UT7GH, only 0.02 Hz below the center frequency of your invisible signal. I then used a text
editor to "notch" the QRM by clearing some strong bins in the exported FFT data. After
rerunning ifft and ebnaut-rx, I was rewarded by a valid -0.9 dB decode.
Best 73,
Markus
-----Ursprüngliche Mitteilung-----
Von: jcraig <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Fr, 27 Nov 2015 8:57 pm
Betreff: Re: LF: More EbNaut 137.777
Hi Markus,
My aerial current is 170mA so 3.5 uW on 8.3 kHz!
Nice Eb/No values, Markus. Getting ready to start EbNaut again, hopefully
with the timing offset reduced. Intended start time 2000 UTC.
CHU weak on 7850 kHz -- hopefully reflex time is good.
73
Joe VO1NA
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