I'm keen on AMSAT, though I've still done only a little with it so far.

I've only successfully used two radios trying to work satellites (a friend's VX-8DR and my FT-817ND), though I've tried with the ?VX-6R and an old Icom 2AT. Every time I've been successful has been with the Elk logp, which I've become rather fond of.

Here are some notes on using gpredict effectively.