The indefinite-delivery, indefinite-quantity (ID/IQ) contract has a five-year base period with five option years.
Under the $51.5m contract, Harris will supply additional terminals, including transportable X/Ka band and large fixed X/Ka band.
The company will also provide equipment racks, operator training and spares to support terminal fielding.
The advanced satellite terminals support high-priority military communications and missile defence systems that enable the warfighter to communicate back to the main base or command, to access resources at remote locations.
Under the MET programme, Harris will replace existing AN/GSC-52, AN/GSC-39, AN/FSC-78 and other aging satellite communications terminals.