Brent If you are interested in Hy Gain rotor PC control, check out the "Rotor-EZ"; the best new product out since Viagra hit the market (at least for those of us over 55). It is a kit and made by Idiom Press (PO Box 1025, Geyserville, CA. 95441). They also have a web site at www.idiompress.com I use it to computer control three Tailtwisters, two Ham IV's and a CD-44. Dick K8ZTT Franktown CO