An optical cross-connect system is disclosed that use reduces the number of AWGs as compared to prior art systems so that the hardware complexity is reduced while simultaneously reducing its production costs. The surgical instrument comprises a flexible tube having a proximal tube end and a distal tube end, the flexible tube defining a cable passageway and being configured for insertion of at least a distal portion of the flexible tube into a body cavity of a patient. The payload module may be selected from a plurality of interchangeable payload modules containing different payloads. The top flange is adapted to receive a NATO style antenna and the bottom flange is adapted to be attached to the outside surface and aligned with the antenna mount opening of a non-NATO type armored vehicle. Said openings are separated from the channel by a partially permeable sieve-type membrane. A receiver with a target dataset can receive the top level hashes from the first channel and use them to determine which lower hashes are needed to identify parts of the master missing from the target.