[hpsdr] An high dynamic QSD front-end

[James Courtier-Dutton]

Marco IK1ODO wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi all,
> 
> as a few members of this list already know, I did a lot of work about 
> expanding the dynamic range of a QSD mixer.
> Some results of my work are in http://www.spin-it.com/sdr/IK1ODO_SDR1.html .
> Possibly this may be a good starting point for Phoenix; I am willing 
> to cooperate, if possible.
> 
> Please have a look at the page and the other two, with more 
> measuraments and tests. This may not be the ultimate SDR, but I think 
> that the results are quite interesting, and it's simple to implement.
> 
> 73 - Marco IK1ODO
> 

That looks nice. I see you are using a sound card with balanced audio 
input, instead of unbalanced. How much benefit did you see that 
producing over an unbalanced audio input?

For those interested, The emu1212m and emu1820m currently work in Linux 
as well as Windows.

James


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