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Old March 2nd 07, 06:19 PM posted to rec.radio.amateur.homebrew
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First recorded activity by RadioBanter: Oct 2006
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Default PowerSDR, SDRADIO etc - demodulation possible using only I or Q, why?

Hello mates!

I'm really confused. I just built an I/Q based transceiver (mostly
following the Youngblood articles) and just noticed that when I'm
using either PowerSDR or sradio, I can still demodulate everything if
I plug I or Q connector off from the rx.

I thought that PowerSDR and Sradio are both IQ based softwares. Is it
done just by mixing the audio to baseband. Where those programs need
the phase relation between I and Q. Yet, I noticed that putting the
other component back, the reception improved many db.

Looking for some answers. Thank you!

73 de Janne, OH1GTF

 
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