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由于通过无线电波传送的消息越来越多,日益增多的天线都蜂拥在日趋变小的空间里,因而对频率—消除技术等的考虑就具有新的重要性。Plessey Avionics公司和通讯有限公司的消频新技术是装备在军用甚高频通讯系统中的单频道中继器的主要依据。此装置取代了足够装备一部LAND ROVER牌汽车的无线电设备。
As more and more messages are being transmitted over radio waves, the increasing number of antennas flocking to smaller and smaller spaces has given new importance to the consideration of frequency-canceling techniques. The new technology from Plessey Avionics and Communications Ltd. is the primary basis for single-channel repeaters in military VHF systems. This device replaces enough to equip a LAND ROVER car radio equipment.