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| To: | [email protected] |
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| Subject: | Re: VLF: A weekend for newcomers and advanced newcomers... |
| From: | Paul Nicholson <[email protected]> |
| Date: | Wed, 1 Mar 2017 09:13:12 +0000 |
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Stefan wrote (22nd Feb) > f = 8270.100000 Hz > Start time: 22.Feb.2017 18:00:00 UTC > Symbol period: 30 s > Characters: 8 > CRC bits: 16 > Coding 16K21A > ...delayed by 30 minutes :-( > Start time: 22.Feb.2017 18:30:00 UTC (28th Feb) > 8chmessage.wav > Maybe Paul can analyse it further The message is in there at Eb/N0 = -2.5 dB. Timing good. Not sure about frequency yet, still sweeping (slowly, the PC is full of 16K19 trials). Error map http://abelian.org/vlf/tmp/170301a.gif suggests better reception during the evening and it gets worse later, or maybe there's a slight frequency offset. -- Paul Nicholson -- |
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