That's an interesting possibility. A friend built a little FM transmitter and drove it from his computer sound card. The poor low pass filters on the sound card output caused interference between the D/A sampling frequency and the stereo encoding. I think it just resulted in a lot of noise on the FM. He added an LPF chip from Linear Technology and it got a lot better. Harold On Sun, 9 Jun 2002 02:20:21 -0500 Scott Stephens writes: > From: Herbert Graf > Subject: [EE]: FM transmitter problems > > > >I built an MP3 player out of a Pentium PC and installed it in the > car. > > Oh my, anyways try piping signals from two different sources into > your FM > stereo transmitter L & R channels, and see if it creates the same > .5Hz > fading. Perhaps there is some kind of wierd correlation between how > L-R > signal is encoded on the CD, and encoded in FM stereo. Try switching > L & R > channels too. > > hit from yahoo search of "stereo FM transmitter subcarrier L-R" > http://members.tripod.com/~transmitters/stereo.htm > > Scott > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu