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@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@orange.fr>
To: "Frank" <fdavis@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@nfld.net>
> To: <topband@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
_______________________________________________
"160-meters is a band for men, not for sissies!" - SM5EDX
|