Because of space requirements, the Powered Armor EWAR System cannot carry all of the systems an Internal Electronic Countermeasure can hold. However, the Graviton Pulse Generator isn't really necessary in ground conflict due to only effecting Starship Subspace Mass.
The Powered Armor EWAR System, developed by Kaiserlich Waffenerbauer in AF 260 (YE 34), has been installed with an Electromagnetic Scambler and an Electromagnetic Deceiver. The Electromagnetic scrambler generates 'noise' to flood a single frequency or group of frequencies in order to deter communications and radar. The Electromagnetic deceiver intercepts or absorbs communication and radar signals to allow the operator to send false or distorted signals back to the receiver. Each system has an effective range of 5 kilometers.