MIL-DTL-55661 Connector, Plug, Electrical Ug-1870\( \)/U Connector, Receptacle, Electrical Ug-1837\( \)/UThis specification covers Connector, Receptacle, Electrical UG-1837\( \)/U used on Test Set AN/PTM-7, Restorers TD-206 and on Shelters of Low, Medium and High Capacity, Tropo Subsystems of Army Area Communications Systems.