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Power Supply Handbook -- Gain the knowledge and confidence you need to build and use power supplies. A must have for your bookshelf!

Introduction to Radio Frequency Design -- Basic RF concepts (with some related analog subjects) for the amateur or engineer.

ARRL's RF Amplifier Classics -- Turn dreams of constructing your first amp or next brick into reality!

ARRL's Vintage Radio -- Articles about the lure of vintage Amateur Radio gear.

Do-It-Yourself Circuitbuilding for Dummies -- Now Shipping! -- A fun and easy way to start building circuits for your projects!

Feedback - February, 2003 QST

Chessbyradio.com [Strays, Dec 2002, p 94] is looking for a new home server. In the meantime, please use http://www.chesswarrior.com/chessbyradio, my main chess site.--John Dutton, WA2HSO
The "Old Radio" column [Dec 2002, p 85] states, incorrectly, that the HR-1680 receiver had a digital display; it does not. It's still a nice $100 radio, though, and you can have a hundred dollars' worth of fun with it.--John Dilks, K2TQN
Clarification: The article about the recent ARRL Director and Vice Director election ("Happenings," Jan 2003, p 69] did not include the fact that Bill Edgar, N3LLR, was elected without opposition to a full three-year term as Atlantic Division Vice Director.
In my December article ["Try Copper for 2 Meters--The Cu Loop," p 46], it should be noted that the photo in Figure 2 showing the antenna mounted in the vertical plane is actually a physical compromise being used to work both horizontal and vertically polarized signals without change. This polarization is still horizontal but does have a vertical component that gives it an advantage over the full horizontal mounting for working repeaters, etc. If you intend to work primarily vertically polarized signals the antenna should be mounted with the split element in the vertical plane. The maximum radiation would then be on a line through the feed point and gap. I hope to have radiation patterns available for a future article. For handheld direction finding, the antenna should be oriented as shown in Figure 2 with the null on a line through the shorter sides.--Dick Stroud, W9SR