Bodyborne antennas

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Abstract
Initially most bodyborne radio equipment was used by the military, particularly the infantry, and the equipment was cumbersome necessitating the wearer being festooned with a number of radio units from one of which an antenna projected. The advent of transistorised equipment has made it possible to package the equipment in much smaller units allowing more flexibility in its positioning on the body. With the use of higher frequencies than the original 30-80 MHz, personal handsets were introduced. These would not have been practical for significant ranges without the use of elevated base stations; networks of these as in the cellular radio systems permit coverage over a wide area. Without such networks communication ranges are still limited by propagation considerations. For this reason operations in rural areas still rely largely on the lower VHF bands particularly in the military field where mobility may mean that there are no elevated base stations.

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