| AF |
Audio frequency |
| AFSK |
Audio frequency shift keying |
| AGC |
Automatic gain control |
| ALC |
Automatic level control |
| AM |
Amplitude modulation |
| ARRL |
American Radio Relay League |
| ATV |
Amateur television |
| AVC |
Automatic volume control |
| BFO |
Beat frequency oscillator |
| CEPT |
Conférence européenne des postes et des télécommunications |
| CW |
Continuous wave |
| DARC |
Deutscher Amateur-Radio-Club |
| DEMOD |
Demodulator |
| DEV |
Deviation |
| DISC |
Discriminator |
| EMF |
Electromotive force |
| ERP |
Effective radiated power |
| FM |
Frequency modulation |
| FSK |
Frequency shift keying |
| HAREC |
Harmonized amateur radio examination certificates |
| HF |
High frequency |
| IF |
Intermediate frequency |
| ITU |
International Telecommunications Union |
| LSB |
Lower sideband |
| LUF |
Lowest usable frequency |
| MIC |
Microphone |
| MOD |
Modulator |
| MUF |
Maximum usable frequency |
| OSC |
Oscillator |
| PA |
Power amplifier |
| PEP |
Peak envelope power |
| PHASE COMP |
Phase compensator |
| PLL |
Phase locked loop |
| PM |
Phase modulation |
| PTT |
Push to talk |
| PWM |
Pulse width modulation |
| REF OSC |
Reference oscillator |
| RF |
Radio frequency |
| RTTY |
Radio teletype |
| RX |
Receiver |
| SSB |
Single sideband |
| SSTV |
Slow scan television |
| TX |
Transmitter |
| UHF |
Ultra hifg frequency |
| USB |
Upper sideband |
| USKA |
Union Schweizerischer Kurzwellen-Amateure |
| UTC |
Coordinated universal time |
| VCO |
Voltage controlled oscillator |
| VHF |
Very high frequency |
| VSMR |
Voltage standing wave ratio |
| WPM |
Words per minute (12 WPM = 60 signs per minute) |