Hi Markus,
Thanks for your transmission. The carrier is well visible on the 6000
window and of course even better on the 60000 window. There is another
trace, well visible on 8270.000 Hz, probably Uwe? Although my forest
grabber wideband window showed low QRN in the early afternoon, there's
no trace of your signal(s). No sign of Markus probably due to the loops
orientation but also due to the loads of phase glitches. My GPS module
is on the way but i'm searching for other errors. The Raspi shows some
error messages in the syslog, like
Mar 20 16:43:17 raspberrypi kernel: [1378491.018200] ieee80211 phy11:
rt2800usb_txdone: Warning - Data pending for entry 6 in queue 2
Mar 20 17:10:50 raspberrypi kernel: [1380144.215414] Transfer to device
90 endpoint 0xa frame 726 failed - FIQ reported NYET. Data may have
been lost.
But that's OT stuff...
Now, Markus, both of your messages on the 36 km wre successfully
decoded, see attachments :-) The SNR is quite close to the limits,
interesting.
73, Stefan
Am 20.03.2016 11:51, schrieb Markus Vester:
Both EbNaut sequencies went out ok
on 8270.1 Hz. I'll leave the carrier on 8270.0025 for a couple of hours
to see whether the phase is stable now after the GPS antenna has been
repositioned, and whether a trace might appear on Stefan's forest
grabber (unlikely though due to N-S loop orientation).
Best 73,
Markus
Sent: Sunday, March 20, 2016 9:42 AM
Subject: Re: VLF: EbNaut 8270.1, Sunday Mar 20
Another repeat will be running
9:00:02 until 10:25:22.
73, Markus
Sent: Sunday, March 20, 2016 8:15 AM
Subject: Re: VLF: EbNaut 8270.1,
Sunday Mar 20
Looks a bit quieter this morning, so I decided
to repeat the 5-character message once more.
Same parameters, started 07:10:02,
end 08:35:20.
Best 73,
Markus (DF6NM)
-----Ursprüngliche Mitteilung-----
Von: Markus Vester <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Do, 10 Mrz 2016 10:22 am
Betreff: VLF: EbNaut 8270.1, Thursday Mar 10
Another
EbNaut message for Stefan has just been started at 09:20:
Frequency:
8270.100 Hz,
start time
09:20:02,
5
characters, 8K19A, 16 bit CRC, 10 second symbols,
total duration
5120 seconds,
end
time 10:45:22.
Best 73,
Markus (DF6NM)
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DF6NM_VLF_EbNaut_2.png
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DF6NM_VLF_EbNaut_1.png
Description: PNG image
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