Question about Delphi Roady XT XM Radio Receiver

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Noise with casette adaptor

Hello, I am using the roady xt casette adaptor in my lexus sc430, 2003. There is some sort of interference with the sound, sort of a cross between a hum and a squeal. I've tried reversing the orientation of the casette with no luck. Could it be interference from the lighter power adaptor? Any ideas or suggestions would be greatly appreciated. FYI, I'm using the same unit in my home and another car which has a cradle hard-wired to the car's stereo. In those applications the unit sounds great. The stereo in the Lexus sounds great with CD's, so I know the unit is working well. The casette player is in brand-new condition and the casette adaptor is brand-new. Thanks for your help!

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Well Jill the problem you are having is called inducted noise. The lighter power adapter cord is inducting electrical current to the cord used by the cassette adapter thus creating the the noise you've been hearing. Do your best to separate the two cables as much as possible. I realize that your unit may have both cords coming out of th same side, and that's fine. the longer the run of wire, the easier it is to have induction issues. If the cords do come out on the same side, run one up and the other down away from the other cord. Do not coil the lighter adapter or cord either, it increases the chance of being able to induct noise. If your unit is to close to the lighter assembly you may need to move the unit to another location in the vehicle itself to help combat the noise issue. Other options include to shield the cassette adapter wire, i use aluminum tape for heating/ac ducts. The only other option i can see is purchasing a FM modulator which will transmit the units sound wireless-ly through an FM radio channel. You will want to check and see...i do believe most XM radios have a FM modulator built in. Hope this helps, and good luck.

Posted on Jan 03, 2011

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