Was driving on the freeway and all was well, but as soon as I got off and came to a stop, the radio started to go loopy. It would fade in and out and then the signal went away completely in an area where I have never had signal issues.
It has been doing it all day long. I stopped in a spot where it had a good signal, so I went inside and poked around, didn't see anything loose or shorting or whatever. The weird part is when I touched the antenna, the signal faded away to about half of what it was. Not the cable, the antenna itself. What could it be?
I noticed about a week ago, when I was decelerating to a stop that it made a whirring noise in conjunction with the engine RPM's, but it never did that again.
Maybe the antenna cable isn't fitting correctly or the head unit just isn't working correctly. Have you tried a different head unit just to test it? Maybe adding a temporary ground to the unit itself? It's a pretty tedious process when you chase electrical gremlins, especially when they're not consistent. Keep trying to eliminate possibilities by using alternate sources.
If you touch the mast you are untuning it. It is setup to be a quater wave length in the fm and the am band get really confusing so I'll let that one go for a later day. If the signal was fading on more than one station then I would beleive you had a radio problem but I need your input. Radio stations have all sorts of quirks depending on the band and location and I need to know if it was happening on more then one station? Was in both AM and FM? and far apart were the locations it happened at?
I figured it out. Somehow when my brother was changing stations when we were on the freeway, he bumped one of the buttons on it, says LOCAL on the button, so I assume it's for dumbing down strong signals or something. So that explains why it began to fade out in the rural areas I guess, now it's back to normal.
It changes the bandwidth around the tuned frequency to give it better signal to noise ratio but less signal strength. LOL keep him away from your power tools.....god knows what he would bump and do then!