Topband: Europrean SDR on 160M

[PaulKB8N at aol.com]

Frank,
 
I certainly can see both possibilities and pitfalls with remote  receivers. 
 The odd thing is that if SDRs were used at both ends of  the conversation, 
you might be able to work DX any time of day or night on  160M, as long as 
both stations could be heard by a nearby remote SDR  site.  Strange indeed.
 
Of course, that really isn't a DX QSO, and, other than the novelty of it  
all, it really isn't ham radio as we currently know it.  However, as a  small 
pistol, I can see some advantages.  I would love to hear my actual  signal 
in distant locations.  It would be a great way to really gather  comparative 
data on multiple antenna types over a given DX path.   It would also be a 
great way to find out what paths are open in various parts of  the world 
independent of activity level.
 
There have already been some who are tepid about this  technology.  I 
believe it is yet another tool at our disposal, we just have  to be careful not 
to hurt ourselves with it!
 
Paul, K5AF  
 
 
 
In a message dated 12/29/2009 1:41:27 P.M. Central Standard Time,  
fdavis at nfld.net writes:

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.

73 Frank  VO1HP


----- Original Message ----- 
From: "Jacques RAMBAUD"  <f6bki at orange.fr>
To: "Frank" <fdavis at nfld.net>
Sent:  December 29, 2009 14:06
Subject: Re: Topband: Europrean SDR on  160M


> If I understand correctly you can make DX qso even if you  do not hear 
the 
> DX
> station at all ???
> 73
>  Jacques F6BKI
> ----- Original Message ----- 
> From: "Frank"  <fdavis at nfld.net>
> To: <topband at contesting.com>
>  Sent: Tuesday, December 29, 2009 12:08 PM
> Subject: Topband: Europrean  SDR on 160M
>
>
> Last night I was alerted by Gus VO1MP of  some new SDR websites in Europe 
.
> Check HB9FX:  http://hb9fx-websdr.dyndns.org/ and also a seven rx site in
> Trent at:  http://websdr.ewi.utwente.nl:8901/
>
> It was facinating to listen  to 160M from a receiver based in Europe.
> Tremendously strong sigs in  the PC speaker.   I called CQ on 1815 and 
> worked
> a  few Eu stations by listening to their signals on the European SDR  not 
 
> on
> my shack rx.  The guys I worked were good copy on my  K9AY and FT1KMP but 
I
> just turned down the AF gain.   I  could also hear my own signal coming 
> back
> through the SDR  even though I could only see the faintest of lines on the
> waterfall  display.   Surprising to me were the many NA stations very 
>  strong
> with me not being heard on the Eu SDR.  Don't know yet  what kind of 
> antennas
> are being used over  there.
>
> This may be old news to many  but check it  out!
>
> 73 Frank VO1HP
>
>
>  
--------------------------------------------------------------------------------
>
>
>>  _______________________________________________
>> "160-meters is a  band for men, not for sissies!" -  SM5EDX
>
>
>


----------------------------------------------------------------------------
----



No  virus found in this incoming message.
Checked by AVG -  www.avg.com
Version: 8.5.431 / Virus Database: 270.14.123/2592 - Release  Date: 
12/29/09  
07:47:00



_______________________________________________
"160-meters  is a band for men, not for sissies!" -  SM5EDX