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ARRL Products: Instructor Support (More) The ARRL Instructor's Manual for Technician and General License Courses -- NOW designed for both Technician and General Class. Includes CD-ROM. Basic Electronic Morse Code Keyer Kit -- Build a Morse code keyer kit and experience the project-building fun! 24 Hour Digital Clock Kit -- Build a digital clock kit and experience the project-building fun! Understanding Signals -- This Stamps in Class guide shows you how to generate, view and measure a variety of wave forms with the Parallax USB Oscilloscope and BASIC Stamp-controlled circuits. US Amateur Radio Bands - ARRL Frequency Chart (50 pk) -- 50 pack. Full color, size 8.5 x 11 inches.

The site of the Missouri State Convention [see August 2005 QST, page 86] has changed. The new site is the Ashland Optimist Complex in Ashland, Missouri, 13.5 miles south of Columbia on US 63. For details, see the Central Missouri Radio Association Web site.

The reference to military ARC-5 transmitters in "The Doctor is IN" [July 2005 QST, page 54] isn't quite correct. The BC-457, 458 and 459 transmitters were not, strictly speaking, ARC-5s. They were part of the SCR-274N Army Air Corps radio system. The ARC-5 transmitters were part of a Navy radio system series (the T-15 through T-22).--Tnx Dean Billing, WA6IKJ

In "The Transatlantic on 2200 Meters" [July 2005 QST, page 45], parts of equations 1 and 2 did not print. The equations should have read:

L = 1/2πf²C [Eq 1] and

R_g = P/I² [Eq 2]