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This category includes exchanges of notes, memoranda of agreement, and formal bilateral or multilateral arrangements between Canada, the United States, and partner countries concerning telecommunications, satellite systems, and radio‑frequency coordination. The documents address subjects such as shared use of the radio‑frequency spectrum, cooperation on satellite programs like RADARSAT and SARSAT, and the operation of commercial remote‑sensing satellite systems. These agreements support interoperable communications, joint satellite operations, and coordinated management of cross‑border and international telecommunications services.