| Acronym | Meaning |
| PTT | Push-to-Talk |
| VEH | ID Vehicle Identification |
| PK/PK | Peak To Peak |
| SPIF | Standard Payload Interface Facility |
| RPP | Reinforced Pyrolytic Plastic |
| EMPGS | Electrical/Mechanical Power Generation SubsYstem |
| BM | Body Mounted |
| HSC | Hardware/Software Coordination |
| SFL | Secondary Freon Loop |
| NOCC | Network Operations Control Center (GSFC) |