The XF-I system uses the most advanced EPLRS waveform available for communications, critical position location information and effective electronic counter-countermeasures.
Some Z-9Bs in the PLA service have the back-row seats removed to accommodate additional equipment for communications relay, artillery direct, and electronic countermeasures roles.
一些在PLA服役中的Z-9B中移除后排座位去容纳辅助设备用于通信中继、炮兵指示和电子对抗角色。
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EH-60A is an Electronic Countermeasures (ECM) variant. It has a unique external antenna, designed to intercept and jam enemy communications.