Raido Code and Power antenna

My radio in my 98 spider eclipse keeps resetting. When the car is off for more than an hour, the radio locks up. I keep having to re-enter my code. Also, the same time this problem started, my power antenna stopped working. It won't come up. To complicate matters, my factory security system and keyless entry also stopped working at the same time!! Any ideas?

Did you check all your fuses first?

Did you mess with the wiring at all? Try to install an aftermarket security system?