RE: [linrad] SDR Hardware

["Robert McGwier" <rwmcgwier@xxxxxxxxxxxxxxx]

Hello Gian:

The R2Pro and SDR-1000 do not have "all that gain" at
audio.  The SDR-1000 is a a dual conversion receiver
with the last IF at 11025 Hz and the last mixing done
digitally.

Bob

-----Original Message-----
From: owner-linrad@xxxxxxxxxxxxxxxxxxxxxx
[mailto:owner-linrad@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Giancarlo Moda
Sent: Friday, December 12, 2003 10:31 PM
To: linrad@xxxxxxxxxxxxxxxxxxxxxx
Subject: RE: [linrad] SDR Hardware


The problem with direct conversion receivers is that
all the gain is at audio frequencies.  
Why not to try a single conversion receiver where the
gain is equally distributed between IF and audio?

73
Gian
I7SWX
F5VGU
> radio with Linrad, SDR,
> GnuRadio
> are really changing the way we think about receiver
> work and homebrewing
> receivers.
> 
> For my money, having done all of the above, the
> potential for the QSD
> (Tayloe
> detector) is extremely large.  The numbers I can
> measure in the lab tell me
> that with careful design work, this can be the basis
> for the greatest
> receiver
> in all numbers.
> 
> Bob





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