On Sun, Feb 3, 2013 at 9:35 AM, Brian Lloyd <brian-wb6...@lloyd.com> wrote:
> > > If you can eliminate nonlinearity and nonlinearity-causing components > before you get to the A:D, i.e. connect your A:D directly to the antenna, > and as long as that A:D does not saturate (clip), you have the (almost) > perfect receiver with no IMD, modulo operating within its dynamic range. > Remember those two 0dBm peaks standing alone in the spec-A display in > Gerald's latest missive? That's what I am talking about. > BTW, the preselector is still useful in this case where there is a very strong undesired signal that is causing saturation of the A:D converter. Use the preselector (or band-pass filter) to reduce the power of the unwanted signal and bring the A:D back into linear (non saturation) operation. -- Brian Lloyd, WB6RQN/J79BPL 3191 Western Dr. Cameron Park, CA 95682 br...@lloyd.com +1.767.617.1365 (Dominica) +1.916.877.5067 (USA) _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
