Detailed Functional Theory and Reference Manual for Radar Signal Switchboard
SB-4177(V)/UYQ-21(V), NAVSEA SE685-AF-MMM-300/UYQ-21(V), Naval
Sea Systems Command, Washington, DC, 1988.
Detailed Functional Theory and Reference Manual for Signal Data Converter CV-
3820/UYQ-21(V) and Video Signal Converter CV-3893/UYQ-21(V), NAVSEA
SE685-AF-MMM-170/UYQ-21(V), Naval Sea Systems Command,
Washington, DC, 1990.
Detailed Functional Theory and Reference Manual for Video Signal Switchboard
SB-4022(V) 2,3/UYQ-21(V), NAVSEA SE685-AF-MMM-220/UYQ-21(V),
Naval Sea Systems Command, Washington, DC, 1985.
Maintenance Instructions, Organizational, for Computer Display Set AN/UYQ-
21V), Volume 1, NAVSEA SE685-AF-MMM-010/UYQ-21(V), Naval Sea
Systems Command, Washington, DC, 1989.
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