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Mountain Combat: Hard to move, hard to shoot, even harder to communicate

Communicating in mountains is a challenge since there are few ideal spots for communication. FM radios, which are line of sight systems, frequently cannot communicate because their signals are absorbed by terrain folds and features. If all the force is on the same side of the mountain and the mountain forms a bowl, FM communications are usually possible. However, radios located on the same side of the mountain at different altitudes have difficulty communicating because of intervening terrain and communications dead space. If the force is deployed on the same side of a mountain which curves out, communications are especially difficult. Even FM radios located on the summit of the mountain have difficulty communicating with radios located further down the mountain slope due to dead space. Communications sites must be carefully selected–and often become key terrain. When line-of-sight communications in mountains are possible, communications are excellent, but there are few sites where line-of sight is possible to all other elements in the net. There are often only three solutions–either move the radio to where it can communicate, set up a radio retransmission site or relay messages across the net.