Hi Markus,
I'll take your advice and stay put. 137.5 was a pilot carrier
for EbNaut reception using Spectrum Lab during the pre-NEO 7 era.
The current set up is a uno with a 10 position switch that selects the
32 bit frequency word for the AD9850. Apparently the uno doesn't do 32
bit math so the word has to be determined by other means. I can move but
not easily at the moment, Jay. Perhaps the DOCXO/uno/9850 can be replaced
with a NEO 7.
I'll try some phase inversions tonight. Hopefully the TX, WX and my
memory of how to do this will cooperate.
Please feel free to suggest a coding/polynomial, Markus.
Paul's little class E is very classy -- much nicer than the one here.
TNX & Best 73
Joe
On Tue, 4 Dec 2018, Markus Vester wrote:
Hi Joe,
thanks for your fine signals, both on the "77"ies on LF, as well as perfectly
persistent on VLF 8270.0075 Hz.
No objections from this end toward EbNaut in the opds band. For us it's comfortable to
reuse an already running SpecLab instance with data Export. If you decide for a
relatively short message and simple coding, my grabber PC is capable of running an
autodecoder instance. Spot on 137500 is not good as there are carriers from Russian Loran
(all multiples of 6.25 Hz), and it can also be prone to intermodulation from 60 + 77.5
kHz time signals. Better stick to your 137477 "home" QRG, or perhaps go to one
of the unofficial EbNaut gathering spots, e.g. 137490.
Best 73,
Markus (DF6NM)
-----Ursprüngliche Mitteilung-----
Von: jcraig <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Di, 4. Dez 2018 17:33
Betreff: Re: LF: VO1NA - Opera32 detections
Thanks Bernd and Stefan.
Thanks also to Markus for his OPDS work and web site.
The TX is a 50W class E feeding the 100x20m rotated L. The Decca PA is
taking some time off, following more charred wood and fused halyards...
quite alarming!
An XOR BPSK modulator module is QRV for some EbNaut. Is there any
objection to using 137.5 kHz to send an EbNaut message later this
week?
73
Joe
On Tue, 4 Dec 2018, DK7FC wrote:
...and a few from here too:
2018-12-04 07:00:00 VO1NA 4421km 137477.000Hz 2mHz -40.5dBOp 93% 19.3dB
2018-12-04 06:00:00 VO1NA 4421km 137477.000Hz 2mHz -37.2dBOp 93% 19.3dB
2018-12-04 05:00:00 VO1NA 4421km 137477.000Hz 2mHz -34.3dBOp 93% 19.8dB
2018-12-04 04:00:00 VO1NA 4421km 137477.000Hz 4mHz -39.5dBOp 93% 16.8dB
2018-12-04 03:00:00 VO1NA 4421km 137477.000Hz 2mHz -34.3dBOp 93% 19.8dB
2018-12-04 02:00:00 VO1NA 4421km 137477.000Hz 2mHz -33.3dBOp 93% 19.1dB
2018-12-04 01:00:02 VO1NA 4421km 137477.000Hz 2mHz -32.4dBOp 83% 19.6dB
2018-12-04 00:00:00 VO1NA 4421km 137476.999Hz 3mHz -39.3dBOp 93% 18.9dB
2018-12-03 23:00:02 VO1NA 4421km 137477.000Hz 2mHz -36.3dBOp 83% 18.2dB
2018-12-03 21:00:00 VO1NA 4421km 137477.000Hz 2mHz -42.7dBOp 93% 18.4dB
2018-12-03 18:03:56 IK1HGI 449km 137480.000Hz 2mHz -41.2dBOp 81% 17.9dB
2018-12-03 17:29:15 IK1HGI 449km 137480.000Hz 4mHz -41.4dBOp 96% 19.2dB
2018-12-03 16:54:35 IK1HGI 449km 137480.000Hz 4mHz -39.5dBOp 97% 19.1dB
2018-12-03 15:09:40 IK1HGI 449km 137480.000Hz 2mHz -35.2dBOp 94% 20.7dB
2018-12-03 10:08:36 IK1HGI 449km 137480.000Hz 3mHz -43.9dBOp 98% 15.2dB
2018-12-03 03:00:02 VO1NA 4421km 137477.000Hz 2mHz -42.6dBOp 52% 15.7dB
2018-12-03 02:00:02 VO1NA 4421km 137477.000Hz 2mHz -35.5dBOp 52% 18.3dB
2018-12-03 01:00:00 VO1NA 4421km 137477.000Hz 4mHz -41.4dBOp 93% 18.0dB
73, Stefan
Am 04.12.2018 08:27, schrieb Bernhard Wiesgickl:
Hello all,
many detections of VO1NA the last nights at DL0AO:
2018-12-04 07:00:03 VO1NA 4606km 137477.000Hz 2mHz -41.6dBOp 94%
17.0dB
2018-12-04 06:00:01 VO1NA 4606km 137477.000Hz 2mHz -32.0dBOp 82%
18.3dB
2018-12-04 05:00:03 VO1NA 4606km 137477.000Hz 2mHz -34.4dBOp 94%
19.2dB
2018-12-04 04:00:03 VO1NA 4606km 137477.000Hz 3mHz -46.5dBOp 94%
16.3dB
2018-12-04 03:00:03 VO1NA 4606km 137477.000Hz 3mHz -37.3dBOp 94%
18.2dB
2018-12-04 02:00:03 VO1NA 4606km 137477.000Hz 3mHz -40.5dBOp 94%
18.2dB
2018-12-04 01:00:03 VO1NA 4606km 137477.000Hz 2mHz -38.2dBOp 94%
18.8dB
2018-12-04 00:00:03 VO1NA 4606km 137477.000Hz 2mHz -40.1dBOp 94%
18.6dB
2018-12-03 22:00:01 VO1NA 4606km 137477.000Hz 4mHz -43.0dBOp 94%
16.1dB
2018-12-03 21:00:03 VO1NA 4606km 137477.000Hz 3mHz -43.4dBOp 64%
16.5dB
Also nice visible QRSS-Signals during the local morning hours.
https://lf.u01.de/
Bernd, DF9RB
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