Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz

To: [email protected]
Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz
From: Paul Nicholson <[email protected]>
Date: Tue, 22 Nov 2016 15:25:04 +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=rtKUDd7rPNSqpo3fXJ2YU6szbg7QS4c1DxzChTOR5yw=; b=DPLYz5EFEphKwjI2rGjXLpXPI6 gxUezICS4hxhckn9iXytfF5grA0PEtibXIs2XDzvv+662pQ270a7hYVpclemqg21bcCpTqO8xb0dB tSAVgDmCpAu6I8prqNmPhqSdgJ/6lxVdtcUenaXROiLPDZZJ1cC2zQI7qggq/B5ThdA0=;
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <117DEE4AF4DD44F59CB 455664AD7695B@gnat> <[email protected]> <[email protected]> <[email protected]> <[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:38.0) Gecko/20100101 Thunderbird/38.8.0

Stefan wrote:

> f = 6470.00000 Hz
> Start time: 20.11.2016   08:00:00 UTC (Daily repetition)
> Symbol length: 20 s
> Characters: 20
> CRC 16
> Coding 8K19A

It needed the sum of three repeats:

Copied 'STEFAN&[email protected]!'  Eb/N0 = +0.1 dB

S/N of the combined signal:  21.21 dB in 40.6 uHz

20th: Eb/N0 = -2.3 dB, S/N -59.6 dB in 2500Hz, phase 130.3 deg

21st: Eb/N0 = -5.4 dB, S/N -62.7 dB in 2500Hz, phase 117.9 deg

22nd: Eb/N0 = -4.3 dB, S/N -61.6 dB in 2500Hz, phase 150.6 deg


--
Paul Nicholson
--

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