Use a AM stereo decoder IC if you can find one, that would be the
easiest, you may even be able to adapt it to make it syncronous
detection .... AM syncronous detectors (And AM Stereo) all use the I/Q
concept ... try a google on sync detectors, there are a couple of
websites but not a lot ...

John

--- In [email protected], "Chris Hirt" <[EMAIL PROTECTED]> wrote:
> Hi all
> Perhaps my question is stupid, but I am momentary at the end of my
> ideas. What the heck is the demodulation of AM if I have a I/Q signal ?
> My homebrew HDR-2005 (= HardwareDefinedRadio 2005 ;-) is a mixture
> between QRP2001, SDR-1000 and other concepts. It sounds great in SSB. 
> I demodulate LSB, USB or both but not AM. Yes, yes I know M = srt(I^2
> + Q^2), but how I do it in hardware ! Up to now all my trials with AM
> ended in much distortion.
> Does anybody knows how I produce a clear AM from I and Q with (analog)
> hardware?
> Best regards
> Chris








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