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| To: | [email protected] |
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| Subject: | Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz |
| From: | DK7FC <[email protected]> |
| Date: | Wed, 12 Oct 2016 23:02:06 +0200 |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 |
Hi Paul,I got the message with just one error, see attachments. So the system seems to work well... Looking forward to the next test starting 6 UTC. I can't decode 16K25A messages, so its up to you. 73, Stefan Am 12.10.2016 21:35, schrieb Paul Nicholson: > f = 6470.00000 Hz > Start time: 12.10.2016 14:30:00 UTC > Symbol length: 40 s > Characters: 3 > CRC 16 > Coding 8K19A No decode, just a false hit ' WV' at Eb/N0 = -0.7. Strange. According to carrier measurements this should be an easy decode at around +3db. More carrier measurements: night signal phase lags daytime by 60 degrees. Night amplitude is about 0.1 fT. The 16K25A 15 char 140 second message should decode at about Eb/N0 +6dB. So far no improvement on the partial decodes, next to try is correcting for that 60 deg diurnal. -- Paul Nicholson --
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