KY-58
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The VINSON KY-58 provides secure voice communication capabilities for U.S. Military Joint Services, NATO and law enforcement agencies who have access to bandwidth-restricted circuitry such as UHF and VHF satellite access and wideband switched telephone systems. It uses the 16 kbit/s continuously variable slope delta modulation (CVSD). The system was initially fielded as a replacement for the KG-36 and KG-34.
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