--- Bill Harms <[EMAIL PROTECTED]> wrote: > > Now I have a couple of questions. > > 1. My truck suffers from really bad ignition noise. It has had this > problem since the day I bought it. How do I troubleshoot to get rid > of > this. It varies in intensity with the speed of the engine, so I > assume > it is spark plug related. I have had it tuned several times and each > time told them about the problem. I think the repair guy did not > quite > understand. What should I do? >
Sounds like alternator whine or a relative of it. This is fairly common. You'll need some sort of a whine filter on the power leads to the radio. Used to use these for VHF ham transceivers back in the 1970's and 80's. The idea is to isolate that whioe and run it to ground. > 2. Is there some way to inductively connect an antenna to the whip > antenna? I touched the antenna with my hand and it got a little more > gain, enough on some of the weaker signals, that they become audible. > > Anyone had experience with that? Touching the antenna almost always has that effect. Your body is serving as additional antenna. I seem to recall that at one point Gerry Thomas ( of Quantum fame ) developed something to do that but I could be misremembering. One way to attempt such a coupling would be to wind several turns of common ( insulated ) wire around it to run to the remote antenna - link coil style. You'd need to experiemnt over a wide range of number of turns. > > 3. I also have a problem at certain speeds when loud crackling > noises. > It goes away at low speeds. I suspect it is an antenna shorts or > open > connection. Any ideas anyone? Your guesses sound reasonable. My first thought would be the mounting of the whip itself - possibly the insulation separating the whip from the truck body is shot. Russ Edmunds Blue Bell, PA ( 360' ASL ) [15 mi NNW of Philadelphia] 40:08:45N; 75:16:04W, Grid FN20id <[EMAIL PROTECTED]> FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15' AM: Hammarlund HQ-150 & 4' FET air core loop __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
