Question about Delphi Roady XT XM Radio Receiver

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Background noise (high pitched whistle, and buzzing w/ rpm)

There is a high pitched background whistle noticed even when the engine is not on. Turning down the treble helps, but why is it there in the background?

With the engine on, there is a buzzing that follows the engine rpm, like electromagnetic interference from the alternator. I have moved the antenna to the rear window, but the background noise is still there.

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SOURCE: A/C Adapter Noise and Interference

I had the same problem. Worked around it by going through the cassette tape adapter. Seems to have solved the problem.

Posted on Nov 09, 2009

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SOURCE: A/C Adapter Noise and Interference

Just wait until you're over 60; my kids can hear the high pitch, but I can't! You could try another power supply, but it has to have the 2000MA or 2AMPS of power to fire up the unit.

Posted on Feb 27, 2013

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SOURCE: A/C Adapter Noise and Interference

AC wall adapter was failing for me. Car adapter worked OK. Found a 2A 5V adapter and changed the connector with success. Again hearing occasional beep but in car, no explanation found. Have had several good years of service; should not complain.

Posted on Jan 07, 2017

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Whistle noise


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