The Technique Control Modulator is an electronic chassis developed for the Electronic Countermeasures (ECM)/Electronic Attack (EA) Technique Generator for Navy Aircraft. The Technique Control Modulator includes a chassis, power supply and motherboard, and serves as the housing for seven circuit card assemblies.

Technique Control Modulators are used in the AN and ULQ-21 ECM Set, which provides realistic simulation of present and projected ECM threats, to evaluate ECM capabilities of weapon systems and to train weapon systems operators. The VME-3U Technique Control Modulator contributes to improving aircraft ECM systems and the efficiency of those systems’ operators.