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Re: VLF: Crossing the Alps on the 46 km band

from [Paul Nicholson] [Permanent Link][Original]
To: rsgb_lf_group@blacksheep.org
Subject: Re: VLF: Crossing the Alps on the 46 km band
From: Paul Nicholson <vlf0403@abelian.org>
Date: Sat, 21 May 2016 17:12:49 +0000
In-reply-to: <57406B5F.8010707@posteo.de>
References: <154ce50bf7a-15f0-3cdb@webprd-a70.mail.aol.com> <573F94B7.10906@posteo.de> <57406B5F.8010707@posteo.de>
Reply-to: rsgb_lf_group@blacksheep.org
Sender: owner-rsgb_lf_group@blacksheep.org
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 
Stefan wrote:

> There is a clear trace at 6470.0000 Hz with an estimated
> SNR of up to 15 dB.

From 2016-05-21 04:00 to 16:00 the carrier at Cumiana
was 14.6 db in 23.15 uHz.   This is after a stage of vorbis
compression so might be a dB or so better in the raw original.

Good for 5 chars at 84 seconds for Eb/N0 = 0.0 dB.

Cumiana is very sensitive and wideband.  Currently holds the
VLF detection distance record at 8822Hz of 7173 km from W4DEX.

--
Paul Nicholson
--
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