As I understand it.
1. No - different frequency band to those used by RADAR (but it will mess with other devices using frequency bands similar to the microwaves magnetron, apparently it'd work like a crude jammer).
2A. No - Short Answer; not enough output, it needs to be able to pulse transmit, it needs a receiver and someone smart enough to tune it all (and also a bunch of other parts)
2B. No - Long Answer;
http://www.ar15.com/forums/t_1_5/941...ave_oven_.html http://www.thenakedscientists.com/fo...p?topic=7651.0