AW: Re: LF: 2 orthogonal loops and tree stuff

[Vincent Stallbaum <info@vsas.de>]

Cool,

QRO is also used for the GHz Link ;-) Well done, amazing work!

73 es 74 Vinny

-------- Ursprüngliche Nachricht --------
Von: DK7FC <selberdenken@posteo.de> 
Datum: 28.12.2015  20:48  (GMT+01:00) 
An: rsgb_lf_group@blacksheep.org 
Betreff: Re: LF: 2 orthogonal loops and tree stuff 

Hi MF,

It was an UFB WX on the tree again today, while it was completely 
overcast and cold down in the city. Estimated 15 °C in the sun... Like 
in heaven! See: 
https://www.dropbox.com/sh/7ek90nptdid00sv/AADzH49qyT-fXq6fmCXZsWWga?dl=0

I have completed the matching of the second loop now. So there are 
different signals beeing transferred via the stereo stream now. These 
are read in SpecLab here and generate separate spectrograms where the 
difference between both loops become visible, see 
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_Grabber.html

As a test there are now WSPR uploads from each antenna. Instead of 
DK7FC/P i am now uploading spots from DK7FC/NW and DK7FC/NE, for each of 
the loops. This will be done for a few days, just to study the 
difference of SNR, watch phase variations, QSB on MF and so on.

I still need to do a fine tuning of the loops, i.e. decouple them from 
each other. The angle between them is just roughly 90 deg and there is 
room for optimisations. It is a very first state of that system now.

First coloured spectrograms will appear on the grabber site too, in a 
hour or so.

73, Stefan



Am 27.12.2015 21:48, schrieb DK7FC:
> Hi all,
>
> Just for the entertainment, here some new images from the tree. 
> Description contained in the file name...
>
> https://www.dropbox.com/sh/xe583ic42td6g37/AACCz_NNs0JZ_fm8BsYTZ1hCa?dl=0
>
> There will be first colour RDF images on the grabber soon :-)
>
> 73, Stefan
>