 The RQ-4B provides 50% more electrical power than the RQ-4A and carry a larger payload, of up to 1,360 kilograms (3,000 pounds) as opposed to 910 kilograms (2,000 pounds), and also has an improved communications system and an "open architecture" that makes updates simpler.An even bigger Global Hawk derivative, designed to carry a jamming payload of up to 2,720 kilograms (6,000 pounds), is under consideration.The Navy wants BAMS to have an operational radius of 2,775 kilometers (1,500 nmi) and an on-station time of 12 hours.