1. Does the radio work reasonable well on FM? If so, then the antenna is probably connected correctly.
2. Car radios used to have a variable capacitor that needs to be adjusted to match the antenna being used. (Haven't been that business for several years, so I don't know what they do now.) Sometimes this is accessible through the tape player door on the front, behind some removable piece on the front, or from the back. If not adjusted, AM reception can be VERY poor. Some novice installer may not know this. This should be in the installations/owners manual. 3. Some car radios have an internal antenna switch (electronic) that switches the antenna lead from the FM RF input stage, to the AM mixer (often no RF stage). Could be faulty. 4. If the problem is noise blanking all AM stations, could be faulty plug wiring in the vehicle, but this is very unlikely since the previous radio worked well..... 5. Just what are the symptoms -- no noise, white noise and no signal, loud popping noise, ..... ???? Good luck, Mike Hopkins Thermo KeyTek -----Original Message----- From: Cortland Richmond [mailto:cortland.richm...@alcatel.com] Sent: Thursday, January 03, 2002 6:32 PM To: Charles Grasso Cc: emc-p...@majordomo.ieee.org Subject: Re: Something a little different - Car Radio question "Some cars do this?" Nonsense! As you of course know. 1. It may be that your windshield antenna will not work with the particular model radio you got, which would only mean drilling a small hole and installing a whip. You should be able to find this out by calling the manufacturer and asking. 2. Less charitably, the folks who put your radio in may have broken your windshield antenna (necessitating a replacement windshield, which they will NOT want to pay for) and are either unable to figure it out, unwilling to fix it, or are trying to force you into having a different, and more expensive, radio installed. That last is called "bait and switch" and borders on the criminal in most states. Some obvious reactions come to mind. Calling the national or regional Best Buys office. Calling your state's consumer protection office (they may have handled pervious complaints from this store.) Suing them repair the damage to your car. Others are probably forthcoming, here! Cortland (What I write here is mine alone. My employer does not Concur, agree or else endorse These words, their tone, or thought.) Charles Grasso wrote: > Hello all, > > Well Xmas has come and gone and I got a nice new car stereo > for Christmas. I dutifully went up to Best Buy - had it installed > only to be informed that I can no longer receive AM. I happen > to enjoy AM radio so this was a bit of a blow. I inquired as > to what the possible cause might be and the answer I got was.. > "Some cars do this.." which is no answer at all. My car has an > antenna in the windshield and the original radio worked > just fine. I am a little confused soI thought I would ask the > expert EMC community for ideas. ANyone want to hazard a guess as to > what is going on?? > > Chas > > _________________________________________________________________ > Join the world's largest e-mail service with MSN Hotmail. > http://www.hotmail.com > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old messages are imported into the new server. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
