Poor AM reception and noise

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=38345
Printed Date: December 19, 2025 at 8:39 AM

Topic: Poor AM reception and noise

Posted By: paulsg63
Subject: Poor AM reception and noise
Date Posted: August 30, 2004 at 2:47 PM

I have a 2002 Hyundai Elantra.

I replaced my factory radio with an Alpine radio recently and noticed that noise when my cruise control is on or my phone is charging is heard on my AM stations.

I had similar symptoms with my original radio... so I don't think its the Alpine...

Also, my AM reception in poor, stations my brother gets no problem are pretty much static for me.
The FM reception seems to be OK.
I am wondering if I should take the ground out of the harness and ground the radio seperate from the harness.

Has anyone else experienced the cruise control noise or poor AM???

It anyone has any ideas.... that would be great!.

Paul G
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Replies:

Posted By: kgerry
Date Posted: August 30, 2004 at 3:17 PM

there may be a factory signal amplifier... did you hook up the power antenna wire in the harness you used? you may need to power up a signal amp for the AM to come in properly...

we see this with a lot of the VW's as well.....

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Posted By: sparkie
Date Posted: August 30, 2004 at 3:41 PM

Check the antenna's ground to the body. If it has more than 1/2 ohm of resistance to ground, you will get noise and poor reception on AM.

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sparky

Posted By: forbidden
Date Posted: August 30, 2004 at 5:10 PM

Add Buick to that list as well.

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Top Secret, I can tell you but then my wife will kill me.