| Acronym | Meaning |
 | FFBD | Functional Flow Block Diagram |
| GAC | Grumman Aerospace Corporation |
| COMR&DSAT | Communication Research And Development Satellite |
| LSID | Launch Sequence And Interlock Document |
| SSEOS | Space Shuttle Engineering And Operations Support |
| MACH | Velocity Relative To The Speed Of Sound |
| PDR | Program Director's Review |
| SS | Single Sideband |
| DDDU | Digital Decoder Driver Unit |
| ULO | Unmanned Launch Operations |
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