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ARRL Products: Circuit Design (More) Experimental Methods in RF Design -- Immerse yourself in the communications experience by building equipment that contributes to understanding basic concepts and circuits. ARRL's Vintage Radio -- Articles about the lure of vintage Amateur Radio gear. Hints & Kinks--17th edition -- Now including the popular Hands-On Radio column from QST Workbench. ARRL's Hands-on Radio Experiments -- Now Shipping! -- Over 60 basic electronics experiments from the pages of QST! Introduction to Radio Frequency Design -- Basic RF concepts (with some related analog subjects) for the amateur or engineer.

In “The Doctor is IN” [Jan 2008, pp 55-56], the correct value of inductance to bring the antenna into resonance at 3.8 MHz is 13.7 mH.

In “Hamspeak” [Feb 2008, p 103], we missed a zero. A nanometer = 1/1,000,000,000 of a meter. One of the main reasons we use such prefixes rather than using all those zeros is to avoid such errors!

In “I Just Got My License and a Used HF Transceiver -- Now What?” [Mar 2008, pp 39-42], the label at the bottom of Figure 4 should read RG-58, RG-8 and RG-8X. --Thanks K4OL

In the 2007 ARRL 10 GHz and Up Contest Results [Mar 2008, pp 79-80], 6I2HWB was listed as the overall winner of the 10 GHz Only category. Based on recalculation of the distance-based section of the score, 6I2HWB has been dropped to second place. The new winner of the 10 GHz Only category is 4B2WB. -- Sean Kutzko, KX9X