Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

LF: Re[2]: VLF: W4DEX in Europe at 8820 Hz

To: rsgb_l[email protected]
Subject: LF: Re[2]: VLF: W4DEX in Europe at 8820 Hz
From: Alex K <[email protected]>
Date: Tue, 02 Dec 2014 21:58:10 +0300
Dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.ru; s=mail2; h=References:In-Reply-To:Content-Type:Message-ID:Reply-To:Date:MIME-Version:Subject:To:From; bh=IjSXH877ri+t2tgJwzz8uwp1aBUZvcNgchC3IMHaM6k=; b=uqpmiah3l1yaEfzn1nVxDGxF8QHEgVxtqfpDJOjZoL1bTttBywKULhOxKJanq1WCrgXeozECdXImv8b8UAivbusyWf4JF9Ft0ZFNdpsGQN5S+03Kz5KnCnuWbkoS5kwBHe30FFq9v8N+n7OGuqvRvh6VT3uxcy0hnSeKYpILjJQ=;
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
 My little screenshot from nr Moscow KO85ha.
Peak around 8820.003 but many other peaks. 47uHz, 100 min/pix.
My setup is E-probe 0.5mt long on 6 mt mast, BPF 4-15 kHz.
Sync'd GBZ.

Tue, 02 Dec 2014 18:20:07 +0000 от Paul Nicholson <[email protected]>:
>
>Markus wrote:
>
> > I'm tempted to call that a TA first for Dex and Wolf,
>
>Indeed it is tempting.  With that 50.5 uHz spectrum the odds
>of a false peak is probably one in a few tens of thousands.
>
>Perhaps Dex should change frequency a small amount before
>tonight's transmission.
>
>Dex wrote:
> > I have about optimized the matching transformer winding
> > and was able to get about 20% more antenna current.
>
>The extra 1.5 dB is a good step in the right direction.
>The ERP increase should be clear on Mike Smith's receiver
>at Forest VA.   I restarted the regular Forest spectrum at
>
>   http://46.4.26.83/sp8820_vlf35.png
>
>Mike's receiver is very stable and low noise and uses a fibre
>optical link for isolation.  It also has a first rate GPS
>timing system.  This is the rx for European txs to shoot for.
>You can listen to it on the vlf35 stream at
>http://abelian.org/vlf
>
> > I could start at 1800 ...
>
>I don't think I can use the signal so early in the evening.
>Signal will be there, but there is so much phase change between
>18:00 and 23:00.   I should think 22:00 would be a good start
>time for T/A.  No way to predict how the noise will be tonight.
>
>Visit
>
>   http://abelian.org/vlf/fbins.shtml#p=1417536000&b=070&s=fd
>
>and step back over a few days to see the variation in south-west
>noise from one night to another.
>
>Wolf wrote:
>
> > In fact 'VLF6' is rather noisy,
>
>It is a first rate natural radio receiver and picks up more
>whistlers than all the other sites put together.  Its UHF down-
>link causes some compression but I guess that doesn't show after
>the sferic blanking.   Link noise floor never seems to be a problem.
>
>   http://abelian.org/vlf/events.php?stream=vlf6
>
>My own 'new' E-field receiver performed dismally last night, but
>thanks to the signal from Dex I think I know where the problem
>is now.  Maybe I can fix it this evening...
>
>--
>Paul Nicholson
>--
>

Attachment: VLF8820-47uHz-capt02dec2014-0645z.bmp
Description: Windows bitmap

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