Radio Nature -- Now Shipping! -- The reception and study of naturally originating radio signals.

The ARRL Satellite Handbook -- First Edition. Explore, track and operate ham radio satellites!

Amateur Radio Astronomy -- Explore the contributions of radio amateurs, and how to make and set up equipment to study the signals coming from space.

The ARRL Image Communications Handbook -- Use Amateur Radio to see and talk with other hams! Enjoy the imaging modes: NBTV, ATV, SSTV and WEFAX.

Nova for Windows -- A popular Windows-based satellite tracking program, used by thousands of hams. Realistic maps show satellite positions, ground tracks, orbital paths, and star background.