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ARRL Products: Instructor Support (More) Parallax USB Oscilloscope -- This portable two-channel digital storage oscilloscope is a handy and affordable tool for both hobbyist and student! What's a Microcontroller? Parts Kit and Text -- Incorporates a variety of fun and engaging experiments using motion, light, and sound. US Amateur Radio Bands - ARRL Frequency Chart (50 pk) -- 50 pack. Full color, size 8.5 x 11 inches. Basic Electronics Course and Kit -- The Basic Electronics Course and Kit is intended for those teachers and instructors that want a ready resource that they can adapt to their instruction of electronic fundamentals. The materials include a PowerPoint presentation and instructor's script. The course is designed around affordable components, prototyping board, and VOM and uses Understanding Basic Electronics as the associated reference (sold separately). 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.

See the Installation Notes for help installing the ARRL Antenna Book CD, particularly under WINDOWS VISTA.

The ARRL Antenna Book CD (Version 2.0)

1. The installation instructions printed in the leaflet at the front of the CD-ROM say to install the companion utility software from the wrong subdirectory. The user should click on the executable file "ABSetup.exe" in the root directory of the CD-ROM.

2. The instructions for the companion utility software are included in the Adobe Reader file "AB19Software.PDF" (198,151 bytes).

3. Some users have received a warning message about "OLEAUT32.DLL" while installing the software because this file is already in use by Windows. The best response is to click on the "Cancel" button in the warning box. The correct file will be installed the next time the computer boots up. (This procedure is described more fully in the AB19Software.PDF [198,151 bytes] documentation file.)

4. fig6tab.pdf and fig6tab.zip were inadvertently left off of the ARRL Antenna Book CD 2.0. You can download both files in fig6.zip (65,536 bytes).

For the printed book and the CD-ROM Version 2.0

A programming error crept into one of the 539 elevation statistics files used with the YT program. Attached is a new W4-GA-EU.PRN file.