| CDCSS |
Continuous Digital Controlled Squelch System aka DCS |
| CTCSS |
Continuous Tone-Coded Squelch System |
| DCS |
Digital-Coded Squelch, aka CDCSS |
| DMR |
Digital Mobile Radio |
| EME |
Earth-Moon-Earth communication |
| NMO |
New Motorola antennae mount |
| NOAA |
National Oceanic and Atmospheric Administration |
| OSCAR |
Orbiting Satellite Carrying Amateur Radio |
| POTA |
Parks On The Air |
| QSO |
Q-code, contact |
| QSL |
Q-code, QSL card |
| RACES |
Radio Amateur Civil Emergency Service |
| RTTY |
Radioteletype |
| SDR |
Software Defined Radio |
| SMA |
SubMiniature version A coax connector |
| SOTA |
Summits On The Air |