lol, np.
This kind of addresses the OP's question: this is NOT tied to the Radio at all, but you can just turn on the LED and leave it blinking forever (regardless of service or not).
I think she mentioned something about finding it in her purse is easier with a blinking LED
Regardless, this guy might be able to get you foks from point A--> B and tying this to Radio status. I suggest starting a dialogue with him at XDA.