An antenna for communication sets on military vehicles is provided which is interchangeable with existing military antennae, and is suitable to operate with the VRL-12 family. It is adequate to an input impedance of 50 ohm nominally, operates in the frequency band of 30-76 MHZ and is thus suitable for...http://www.google.com/patents/US4224625?utm_source=gb-gplus-sharePatent US4224625 - Antenna
