More info, please!
--How many miles on the vehicle?
--What sort of weird sound did it make? For how long? Ever done that before?
--From WHERE did the weird sound seem to be coming? (e.g., under the hood, from the radio, from the trunk?
--Any recent work done on the vehicle?
--Have you checked the fuses? The radio/antenna problem sounds like it could be a blown fuse.
--Any other weird symptoms?
There IS an answer (or maybe several) to solve this; more specifics will help us logically help you figure it out.