SWR — Standing Wave Ratio.
A measure of how well your antenna system matches your radio. A high SWR means power is bouncing back instead of radiating, and modern radios cut power to protect themselves when they see it.
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Related words
- SSTV — Slow-Scan Television.
- Sporadic E — Sudden short-lived openings.
- FT8 — A weak-signal digital mode.
- Wavelength — The physical length of one radio wave.
- Gray line — The band of twilight moving around the earth.
- FM — Frequency Modulation. VHF and UHF voice.
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- Watts — Transmit power.