Re: LF: 2200m DX

[N1BUG <paul@n1bug.com>]

Hello Domenico,

Thank you for this very nice report. WSPR-15 is amazing and so is
your rx setup!

Last two nights I received WSPR-2 spots from I6/IW2NKE but he is a
bit less distance. It would be interesting to know what setup he is
using.

Download links to WSPR-X have been removed and I had forgotten there
was a linux version. Maybe I should try to find it and give that a
try. So far none of the work-arounds for the unstable Windows
version have solved all my problems.

I do have a linux PC which runs all the time. It's the one I use for
email, web browsing, etc. One problem, it is not located in the ham
radio area. Second (minor) problem, my receiver supplies audio I/Q
to a sound card, then everything after the SDR application is
virtual cables (VB cable). I guess it is easy to route a VB Cable
output to a sound card line output and run a long audio cable out
here to this linux PC. If no problems with RF or something from the
long cable, it might work...

73,
Paul


On 12/26/18 6:41 AM, Domenico IZ7SLZ wrote:
> Hello Paul, LF
> 
> here below some wspr-15 spots of your signal in Apulia, South-East Italy
> (JN80). QRB=6600 km
> 
>  2018-12-26 05:45   N1BUG   0.137623   -39   0   FN55mf   1   IZ7SLZ
>  JN80nu   6666   61
>  2018-12-26 05:00   N1BUG   0.137623   -38   0   FN55mf   1   IZ7SLZ
>  JN80nu   6666   61
>  2018-12-26 03:00   N1BUG   0.137623   -36   0   FN55mf   1   IZ7SLZ
>  JN80nu   6666   61
>  2018-12-26 01:45   N1BUG   0.137623   -34   0   FN55mf   1   IZ7SLZ
>  JN80nu   6666   61
>  2018-12-26 01:00   N1BUG   0.137623   -35   0   FN55mf   1   IZ7SLZ
>  JN80nu   6666   61
> 
> Hardware setup in use is the same as for LF EbNaut:
> miniwhip antenna, JRC NRD-92M receiver, vlfrx-tools software + wspr-x
> (linux version). Location of the rx station is outside the city and it is a
> very quite site regarding QRM, unfortunatly there is no possibility, at
> moment, to get internet working for 'on-line' spotting.
> 
> To work WSPR, there is a bash file, based on vlfrx-tools (thanks Paul
> Nicholson)  that, every 2 and 15 minutes,  reads the raw audio from the
> Storage Hard drive, creates a wave file with the proper filename, and
> launches 'wsprd' for wspr-2 and wspr-15 decodes. This is the local log:
> https://qsl.net/iz7slz/OPDS/WSPRDECODED_LF.TXT
> 
> The nice advantage of this method is that you can easly 'replay' the raw
> audio and try to obtain a missing decode by adjusting noise blanker
> settings. So i'm hoping to catch some of your wspr-2 transmissions; i will
> investigate soon...
> 
> 73, Domenico IZ7SLZ>