Message-ID: <590306EC.6030402@posteo.de>
Date: Fri, 28 Apr 2017 11:10:04 +0200
From: DK7FC <selberdenken@posteo.de>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3
MIME-Version: 1.0
To: rsgb_lf_group@blacksheep.org
References: <5901D268.6040201@posteo.de>
In-Reply-To: <5901D268.6040201@posteo.de>
Subject: Re: VLF: Trace at RC4HAA?
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: RO

VLF,

There are more traces now at RC4HAA (http://136.su/grabber/) but still a 
bit weak to be convincing. Also the GPS reception is sometimes missed. 
Further improvement steps are needed...

73, Stefan

Am 27.04.2017 13:13, schrieb DK7FC:
> VLF,
>
> A few days ago, Andrey / RD4HA from the RC4HAA club station has 
> installed a GPS module for getting a better accuracy of a 47 uHz 
> spectrogram. You can clearly see the improvement of the stability of 
> the Alpha trace at 11904.7619 Hz (the daily phase jump in the Alpha 
> trace is normal), see attachment.
>
> Last night i gave it a first try and sent a pure carrier from about 
> 19...9 UTC on 8270.0050 Hz. The antenna current was a bit reduced, 
> just about 650 mA but that's still a lot.
>
> Now there is a short 'dit' on the right frequency. Just a few pixels 
> in the spectrogram scrolling at 100 min / pixel. It is on the right 
> frequency! Still not quite convincing, right? ;-)
> But tonite i will run another transmission, starting 17...5 UTC. With 
> a second trace on the same frequency, to the right time, it will look 
> a bit more convincing :-)
>
> 73, Stefan