Hookup = the problem probably 95% of the time, when things aren't working.
-
you ALWAYS need to check that the power source [LM317] is working and setup correctly
BEFORE connecting it to anything else. -
there is no way I can see to tell if you've fried your radio, except by getting it to work.
If it works, then it's good. If it doesn't work, then you're still are square-1, and still don't
know whether:
a. the hookup is wrong.
b. the software is wrong.
c. the radio is bad.