Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: VLF: Night-transmission on 8270.1 Hz

To: [email protected]
Subject: Re: VLF: Night-transmission on 8270.1 Hz
From: Paul Nicholson <[email protected]>
Date: Sun, 20 Jan 2019 22:05:03 +0000
Dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=1faP1bV3cKNt1VKMfjGepzgceLKaMXDSybvpGr+vZ+w=; b=dxdbdbARnGneRMqiPj514DyC/Y UO1vfG6OXY2KZ0lBGWlPGsaYk+cjagMfX4Ztjli2AUr+UqIsB86H3S1eLHgkXrjU1Arixzxjdhpwd 9iiU3t0bIvru7NpL5T5Kz1rILeoTSzRGfrDgFcbjMG4eLNSXzEgR8vtLcmOy+S7uwcTo=;
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1
Stefan wrote:

> How many character could have been carried in these 130 minutes
> if an EbNaut message would have been transmitted?

Using:

 Coding: 16K19A
 Symbols: 0.06 seconds
 CRC: 7 bits
 Chars: 1350

The 7800 seconds of carrier decodes to 1350 *
with S/N 39.74dB in 128.2 uHz, Eb/N0 +0.9dB, rank 0.

 http://abelian.org/vlf/tmp/190119c.gif

Needs 32 Gbyte RAM to decode, and an update to ebnaut to
increase some buffer and array lengths.

--
Paul Nicholson
--

<Prev in Thread] Current Thread [Next in Thread>