| Acronym | Meaning |
| MTC | Main Trunk Circuit |
| SAMS | Stratospheric And Mesospheric Sounder |
| NSC | Network Systems Corporation |
| MSIS | Mass Spectrometer And Incoherent Scatter |
| AIV | Aviation-impact Variable |
| ETH | Eidgenossische Technische Hochschule |
| RMC | RAF Management Council |
| SCSC | Summer Computer Simulation Conferences |
| NARE | North Atlantic Regional Experiment |
| IBM AT | IBM Advanced Technology Personal Computer |