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| To: | [email protected] |
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| Subject: | VLF: EbNaut also on 8270.033333 Hz |
| From: | Markus Vester <[email protected]> |
| Date: | Sat, 18 Feb 2017 08:41:29 -0500 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1487425289; bh=ALPrX5KuQaM6FwjKYrQZVkF+kjFJ14fRopOQANPXxyE=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=zambrgPCuwRbCmLD6UPCg+n1wiwSsxOHAEan8p5tInPd6o/fWLz5ZBTvF81U2/eKn 05yLDujXQPx0DTKldxOBaJPUIjrBf92Ik3oYqBydIWMYysGEkmvMZYhGXrp3DNSQ82 Alm9U/1LeFgc0FacpY5hLB3kwzB5DETRPhqxULPk= |
| In-reply-to: | <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
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Hi Jacek, VLF, Nice decode here for your transmission on 13 Fen 2017 20:40from previous successful DK7FC decodes, it looks as if you might also be able to receive a ~10 dB weaker signal from here (10 uW EMRP). Apparently the rain has ended now, so I would like to try an overnight EbNaut transmission with only two characters: Frequency: 8270.0333333 Hz, 2 characters, 8K19A, 18 bit CRC (!), 90 s symbols, message duration 9:36 hours, start 2017-02-18 19:00 UT, end 4:36 UT (Sunday) The 1/30 Hz frequency offset has been chosen to avoid mutual interference with the announced DK7FC transmission on 8270.1 Hz: With the frequency spacing being an integer multiple of both symbolrates, and synchroneous bit timing, the symbol waveforms should be orthogonal because the "other" signal always undergoes a whole number of 360° cycles during the decoder's symbol integration interval. Best 73, Markus (DF6NM) -----Ursprüngliche Mitteilung----- Von: Jacek Lipkowski <[email protected]> An: rsgb_lf_group <[email protected]> Verschickt: Di, 14. Feb 2017 17:23 Betreff: Re: LF: Re: DK7FC EbNaut message on 8270.1 Hz decoded nr Moscow by RN3AUS found rank 0 ber 3.0469e-01 Eb/N0 10.7 M -1.697070885e+01 [XX] ps [ 0 0 0 0 0] carrier phase: 5.3 carrier Eb/N0: 10.9 carrier S/N: 21.44 dB in 32.6 uHz elapsed 29 Switched the message to XX (sent to Stefan off list), so i don't spoil other's fun VY 73 Jacek / SQ5BPF |
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