If your antennae is going down by itself (my 92 does not, only manually by button) it begs the question if there is some kind of electrical or other type current still going between the radio and antennae causing some kind of feedback loop. I've experienced similar noises in vehicles with radio issues and they would increase and decrease in volumn and pitch with the speed of the vehicle.
That is a fantastic perk with the new cruiser. Sounds amazing
That is a fantastic perk with the new cruiser. Sounds amazing