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.
Look this up in Pocket Elmer, along with 100 more
Related words
- FM — Frequency Modulation. VHF and UHF voice.
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- Sporadic E — Sudden short-lived openings.
- Ionosphere — The layer that bounces HF signals back to earth.
- K index — How disturbed the earth's magnetic field is.
- SSB — Single Sideband. HF voice.
- APRS — Automatic Packet Reporting System.
- Solar flux — A number that tracks solar activity.