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| Subject: | Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz |
| From: | Paul Nicholson <[email protected]> |
| Date: | Fri, 13 May 2016 11:04:31 +0000 |
| In-reply-to: | <[email protected]> |
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The Eb/N0 of +5.1 dB is correct. It was a very good signal and an easy decode. The 11.2 dB in 24.0 uHz is wrong: there's a mains harmonic in the passband of the background noise measurement. It's not a very strong harmonic, far too small to trigger a hum notch, but when averaged over 11 hours it adds several dB to the background noise measurement against which the 11.2 dB was calculated. So Stefan, a very good signal indeed! -- Paul Nicholson -- |
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