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The Radio Amateur's Satellite Handbook -- The most informative and most useful book ever written about ham radio satellites! Revised first edition, 4th printing 2003.

AMSAT 21st Space Symposium--2003 -- Proceedings of the AMSAT-NA 21st Space Symposium and AMSAT-NA Annual Meeting. October 17-19, 2003. Toronto, Ontario, Canada.

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.

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

SETICon 02, Proceedings of--2002 -- Proceedings of the second SETI League Technical Symposium. April 26-28, 2002. Ewing, NJ.

Feedback - April, 2003 QST

In "The Doctor is IN" [Mar 2003, p 56], the photos captions are missing. The top left photo is Figure 2A, the top right is Figure 2B, the bottom left is Figure 3A and the bottom right is Figure 3B. The captions should read as follows:

Figure 2A----Modulation (square-wave) that results from an unfiltered key line.

Figure 2B----A shaped and filtered square-wave keying signal.

Figure 3A----Key clicks caused by unfiltered keying result in a wide noise spectrum.

Figure 3B----A filtered keying line reduces these spurious signals noticeably.

In the Hints and Kinks column [Mar 2003, p 67] the caption for Figure 2 should read "A pair of finished termination resistors."