Wavelength — The physical length of one radio wave.
Why bands have names like 20 meters. Divide 300 by the frequency in MHz to get the wavelength in meters — and antenna sizes follow directly from it.
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Related words
- Simplex vs duplex — One frequency versus two.
- SWR — Standing Wave Ratio.
- FT8 — A weak-signal digital mode.
- APRS — Automatic Packet Reporting System.
- RTTY — Radio Teletype.
- Frequency — How fast a radio wave oscillates.
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- Band — A range of frequencies set aside for a purpose.