FM — Frequency Modulation. VHF and UHF voice.
What repeaters and handhelds use. Clean audio, but it needs a strong signal — FM either works well or drops out entirely.
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Related words
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- FT8 — A weak-signal digital mode.
- Wavelength — The physical length of one radio wave.
- SSTV — Slow-Scan Television.
- RTTY — Radio Teletype.
- Watts — Transmit power.
- SSB — Single Sideband. HF voice.
- SWR — Standing Wave Ratio.