Message-ID: <4CCB360C.6020506@toya.net.pl>
Date: Fri, 29 Oct 2010 23:01:00 +0200
From: Piotr Mlynarski <sq7mpj@toya.net.pl>
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Subject: Re: LF: RFspace SDR-IQ
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Tony pisze:
> Hello group.
>
> Has anyone any experience with this SDR ?
> It looks interesting and I'm a bit tempted, especially as it works 
> full spec down to 500 Hz and "usable" to 100 Hz.
> But as I have never used an SDR, I haven't got a clue if it's any good 
> or not.
>
>
Hi Tony, LF group,

i am also a happy owner of sdr-iq. As Lubos and Andy say, it is indeed a 
nice piece of radio equipment
and as its name implies - the software which drives the hardware is 
mainly responsible for the way you are using it
The basic software which  RFSpace offers along with SDR-IQ module is 
Spectravue however this makes the sdr more as
 spectrum analyser than a classical receiver. However, the RFspace 
website has  link to another software , which, in turn makes
SDR a nice , "classical"  receiver with plenty of  'knobs' ;  user 
programmable 'buttons' etc...
follow the  link to SDR-RADIO software
Both the above mentioned programs have also a sound card input so before 
making the purchase you can download the software
define sound card as the "source' and play with it - of course with the 
obvious limits concerning the frequency
there is also another soft ( which is not mentioned on RFspace website) 
which was written for the specific input of sdr-iq
it is named sigmira and can be downloaded ( freely) from:
http://saharlow.com/technology/sigmira/index.htm
All existing software which uses audio output from transceivers for 
,say,"digital" demodulation ( rtty,psk,sstv...)  and also WSJT packages
can be used with spectravue program ( driving the sdr) via VAC ( virtual 
audio cable)

the above aplies also for DRM (Dream software) however, i  have never 
had a full success with it
though the signal looked to be strong enough for a continous demodulation

 i guess, you probably know  the "connection" between  SDR-IQ and EVE  
experiment
after  Wolf, dl4yhf, description of this fantastic experiment:  
http://www.qsl.net/dl4yhf/speclab/earth_venus_earth.htm
i simply e-mailed Rfspace ...   and since then i enjoy the radio  :)

                                                                                                                             
73, Piotr, sq7mpj

qth: Lodz /jo91rs/