Lately the radio in my truck has started acting funny. On any FM frequency higher than 96.3 the radio cuts in and out, Static and then back to the station clearly, doesn't matter if I'm moving or not. AM is fine, and the CD player is fine. I suspect the antenna has started to corrode, or short out. How do i test the antenna? This is a 4 litre SR5, single CD player. Couldn't happen at a worse time, headed to the States in 10 days.