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| Subject: | Re[2]: LF: DK7FC EbNaut message on 8270.1 Hz decoded nr Moscow by RN3AUS |
| From: | Alex K <[email protected]> |
| Date: | Mon, 20 Feb 2017 19:53:42 +0300 |
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Hello Stefan, VLF
... and new decode again! ebnaut-rx V0.5 input file C:\EbNaut\ebnaut19_FEB_0026_8270-1pps.wav sample rate 0.342935 per second rx frequency 8270.1 file start time 2017-02-18 17:48:44.690 polynomial 16K21A crc size 16 number of chars 7 block size 58 symbol period 30.000 number of symbols 1248 list length 20000 start offset 1587.274 freq offset 0.000000 cores 1 skipped 1586.306443 seconds to start initial reference phase 8.5 --------------------------------------------- found DREAMER list rank 5 reference phase 0 0 0 0 carrier RMS 3.002e-005 noise RMS 4.463e-006 carrier S/N 16.56 dB in 26.7 uHz carrier Es/N0 -14.41 dB carrier Eb/N0 0.55 dB info bit period 938.35 seconds symbol error rate 508/1248 = 40.705 % Es/N0 from symbol errors -15.5 dB Eb/N0 from symbol errors -0.5 dB Shannon capacity 6.2 bits/hour Shannon efficiency 62.2 % symbols file C:\EbNaut\ebnaut19_FEB_0026_8270-1pps-symbols.csv elapsed 10 seconds --------------------------------------------- found DREAMER list rank 9 reference phase 30 30 0 0 carrier RMS 3.106e-005 noise RMS 4.463e-006 carrier S/N 16.85 dB in 26.7 uHz carrier Es/N0 -14.11 dB carrier Eb/N0 0.84 dB info bit period 938.35 seconds symbol error rate 495/1248 = 39.663 % Es/N0 from symbol errors -14.6 dB Eb/N0 from symbol errors 0.4 dB Shannon capacity 6.6 bits/hour Shannon efficiency 58.2 % symbols file C:\EbNaut\ebnaut19_FEB_0026_8270-1pps-symbols.csv elapsed 128 seconds --------------------------------------------- found DREAMER list rank 0 reference phase 30 0 0 -30 carrier RMS 3.106e-005 noise RMS 4.463e-006 carrier S/N 16.85 dB in 26.7 uHz carrier Es/N0 -14.11 dB carrier Eb/N0 0.84 dB info bit period 938.35 seconds symbol error rate 493/1248 = 39.503 % Es/N0 from symbol errors -14.5 dB Eb/N0 from symbol errors 0.5 dB Shannon capacity 6.6 bits/hour Shannon efficiency 58.2 % symbols file C:\EbNaut\ebnaut19_FEB_0026_8270-1pps-symbols.csv elapsed 531 seconds Let's risk something more again and try: f = 8270.100000 Hz Start time: Saturday 18.Feb.2017 18:00:00 UTC Symbol period: 30 s Characters: 7 CRC bits: 16 Coding 16K21A Duration: 10h, 24m, 0s Antenna current: 700 mA 73, Stefan
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