Could it be a Radar Jammer, which receives radio waves and re-transmits them to fool the Radar Gun? A poorly designed Radar Jammer could repeat in a very broadband fassion, especially since most are home built kits.
Just an idea. - Randy Flinders EMC Test Engineer Emulex Network Systems [email protected] ---------- From: Tim Haynes G-Net 701 3239 / 3455 Sent: Wednesday, June 17, 1998 9:57 AM To: emc-pstc Subject: Re: Emissions or not? ---------------------------------------------------- WoW! Replies! Rather than respond in person I acknowledge all replies with thanks and comment here. BTW the 144.8 MHz tx is 100W e.r.p. Reflections from the Green Italian car? Why not all the other cars? Over all the other days, weeks, years that I have been using these frequencies? Too much coincidence. I like the idea that it might be the radio receiver in the Italian car kicking out a spurious response. Fault on my receiver? NEVER! :-) Oh well - possibly, but why only in relation to this Italian car? Third harmonic? 144.8 x 3 = 434.4 + 3xdeviation... not equal 433.325 by a long way. BTW 3rd harmonic is neg 74dBc on my old HP 8566a. I think it rules out the rusty bolt syndrome as well. The idea that it is an alarm system (the "here I am - I've been stolen" type) is possible though the chances are pretty low - there are not too many users of that alarm system here in the UK. Resonating car...? Hmm....? Possibly but I streaches my imagination. Duff (Duff is UK slang for faulty/bad) electronics! Well - this was my first thought. Nice processor with lots of harmonics of clock frequencies and the subdivisions. Lots of switches changing the terminating impedance of the tracks (don't forget I am assuming a duff design). Now that really would modulate an incoming signal! Rating of the proposed causes? No I will let you all decide which is the most likely. Me? I am looking for a Green Italian car to experiment on. Oh, the make? I do't want to upset Fiat so I won't tell you......:-) Regards to all Tim
