viper picking up radio !!??
viper picking up radio !!??
Check the earths in your guitar with a multimeter and check whether and how the shielding is connected (the black paint in your cavities is shielding paint and should be earthed) :) Try using a different (and different length) instrument cable, too. I really do expect it's an earthing problem that can be fixed with a bit of re-soldering of joints, but worst comes to worst you can solder a cap across the jack and bleed radio frequencies to earth.
Definitely sounds like it's an earthing problem causing your guitar (and instrument cable) to act like an antenna. If you have a multimeter you should check the earths in your guitar (especially the wire going to the jack). If you don't have one, you can still check visually. It might be a dry solder joint or something else that isn't visible to the naked eye, but it can't hurt to have a look.
You can do some simple checks by plugging the guitar into the amp, and carefully using a length of wire to connect earthed points (the back of pots etc) directly to the earthed part of the output jack. If you hear a change in the interference, you can confirm that the section of wiring you're bypassing is faulty and the cause of the problem. **You're only dealing with 9 volts here, but still be careful, it's always better safe than sorry.
you sure it's the guitar and not your amp?