Cheers - I've seen the radio jove site before, but I was thinking more along the lines of imaging with a radio telescope. Maybe mapping the skies over a certain frequency, or analysing a pulsar over some frequency. It'd be cool to be able to image the gas jets coming out of a black hole in the X-ray spectrum, but I can't see how an amateur can get their own sattelite in orbit...
Cheers,
Brad