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The AN/ALQ-149 is an airborne countermeasures system for the EA-6B Prowler electronic warfare (EW) aircraft that detects, identifies, evaluates and jams hostile communication signals and long-range, early-warning radars. It has been developed to monitor communication and radar emissions operating i n the VHF/UHF (0.1-0.5 GHz) range.

In the ALQ-149, incoming energy comes through the antennas to a radio frequency distribution (RFD) unit. Communications signals are analyzed by...

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