--- In [email protected], "CHARLES HUTTON" <[EMAIL PROTECTED]> wrote: > > Have I missed something? I don't see any relationship between I-Q > and sideband suppression. I do see that Rocky - WinRadio - etc. are > using the I-Q data to achieve image suppression. True sideband > suppression would involve using a Costas Loop, which I don't see in > any of the packages. > > Chuck
Chuck, there is a bit of confusion on what we are talking about. The previous three or four messages were related to the crisper quality the absence of crystal filters, typical of a DC receiver, can give to the audio. The issue of image rejection is a separate one. I don't fully understand you when you say that "true" sideband suppression can be done only by using the Costas loop... can you please explain in what a "true" image suppression done with the Costas loop differs from the image suppression done by a software program that extracts the information from a phasor described by its two rotating components I and Q ? 73 Alberto I2PHD
