What happened to CDE and Telex/HyGain?
The Cornell Dubilier Electronics company sold their rotor division to Telex/Hy-Gain in 1981. Hy-Gain decided to support only the AR-22, AR-40, CD45-II, Ham-4, and Tailtwister rotors. All rights to the other rotors were assigned to Norm’s Rotor Service. Today we are the only facility with parts for the original units. We have almost all parts for the AR-22, AR-33, AR-40, AR-50, BT-1, TR-44, CD-44, Ham-M, Ham-2, and Ham-3 rotors. Telex/HyGain sold the HyGain line of rotors to MFJ in May of 1999 (Of course, we also have parts for the rotors that Hy-Gain continues to support.).