Topband: Europrean SDR on 160M

[David Raymond]

I did some testing with the HB9FX site.  The receiver hears well.  With just 
100 watts my signal from Iowa was Q5 in the SDR at my SS.  While it  was 
fascinating to hear my own signal (and other DX signals that I could not 
even detect here at home), this beckons an opportunity for cheating that 
will likely be too tempting for some to resist.  I fear this sort of thing 
could diminish the validity of our hard earned DXCC entity totals.

73 and Happy New Year to all. . .Dave
W0FLS

----- Original Message ----- 
From: "Frank" <fdavis at nfld.net>
To: "Jacques RAMBAUD" <f6bki at orange.fr>
Cc: <topband at contesting.com>
Sent: Tuesday, December 29, 2009 12:25 PM
Subject: Re: Topband: Europrean SDR on 160M


> Jacques
>
> Definitely YES it is possible to easily do Trans-Atlantic DX QSo's with Eu
> now with NO receiver !!  I did it last night .  I worked quite a number of
> Eu stations on 1815khz by listening to the SDR rx in Trent on the web.  My
> FT1000MP was on and I could copy the signals over the air BUT the copy via
> the web was much easier .... signals very loud from the PC over the same
> speaker I use for the FT 1KMP.
>
> There is some latency in the signal transfer but not significant. I could
> also hear my own signal quite clearly but with a slight delay through the
> SDR.  I had to focus on my CW sending and not my own reflected signal in
> order to send properly.  I am sure that SDR on the web was not intended to
> replace full QSO's over the air but it is possible to do it.   It is an
> unintended outcome I am sure.
>
> Lets take this scenario:  Supposing UA0XXX Zone 19 is being heard in Eu on
> the SDR antenna but not in east NA......also lets say that VO1XYZ is being
> heard in Eu on the SDR antenna but not at UA0XXX QTH.   A QSO is possible 
> if
> the two operators do co-ordination through one of the DX chat groups or by
> email.   No self respecting Dx'er would do this of course but the 
> technology
> is now there to make it possible.
>
> Is this DXing ...definitely not BUT it can be done.  One wonders what the
> future will hold for us with the advent of these  technologies and
> applications.
>