marauder@fluke.UUCP (Bill Landsborough) (02/13/86)
After taking my 1985 Ford F-150 pickup in for a high pitched squeal coming from their top of the line radio for the fifth time they finally were able to eliminate the problem by special modifications to the internal circuit of the radio. The squeal was constant as long as the radio power switch was on. Tape or radio, AM or FM, engine running or not, it would squeal. It was a very high frequency just at the point of human ability to hear it. But it drove us crazy once we realized that it was there. The cause was the green phosphorus display was emmitting the noise and it was being amplified through the audio circuit to the speakers. If you have this problem and never found out what the cause was, this might be it. Bill Landsborough ---- "Love is patient and kind; love is not jealous or boastful; it is not arrogant or rude... Love bears all things, believes all things, hopes all things, endures all things." 1 Corinthians 13:4-7