Well, if there are only those two options, I'd have to go with the flow and vote for "Radio Amigans".
But if it were up to me, it would be called "Voice of Amiga".
Everybody and his dog are calling their net radio stations something with "radio" in the name, it's as if they need desparately to underline the similarity to the good old wireless.
Why not break that trend, and at the same time make an allusion (to "Voice of America") that hints at the fact that this is a station with a standpoint and a mission?
Best regards,
Niels
Edit: P.S. As for a jingle: "This is ahmee-gah spee-king!"
SCNR