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| Subject: | Re: VLF: VO1NA in Todmorden on 8270 Hz - also in Amberg? |
| From: | Paul Nicholson <[email protected]> |
| Date: | Mon, 23 Oct 2017 08:07:09 +0000 |
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Joe wrote: > 2300 utc 22 Oct, 3 characters, 55 second symbols, > 8K25A, 8.2700075 kHz. repeating every 12 hours. CRC was 16 bits. Copied 'VLF' with constant reference phase. H-field: Eb/N0 = +1.4 dB, phase 155.7 deg E-field: Eb/N0 = -0.2 dB, phase 152.5 deg (new RX) Combined: Eb/N0 = +3.0 dB, phase 154.4 deg First sub-9kHz message Canada to UK. Looks like the rough cal of the new E-field rx is working pretty well. I can't improve the combined signal any further. Looks like there's plenty of signal to spare. Later I'll suggest some new settings for the coding. I don't think I'll get the 11:00 repeat, my receivers will probably be off this afternoon. -- Paul Nicholson -- |
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