Inactive

his is an Switch, Electronic. This Electronic Switch (EDM 4 & 4A) is a part of the CFA Modulator (B/PD), providing CFA cathode pulse outputs in addition to containing filament and screen grid networks... his is an Switch, Electronic. This Electronic Switch (EDM 4 & 4A) is a part of the CFA Modulator (B/PD), providing CFA cathode pulse outputs in addition to containing filament and screen grid networks for the internal switch tubes. It is an integral part of the AN/SPY-1 radar array, a computer controlled passive electronically scanned system, using four complementary antennas to provide 360 degree coverage and is a key component of the AEGIS Combat System, which uses powerful computer and radar technology to track and guide weapons to destroy enemy targets.