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.
- Frequency — How fast a radio wave oscillates.
- Watts — Transmit power.
- Solar flux — A number that tracks solar activity.
- Offset — The gap between transmit and receive frequency.
- CW — Continuous Wave. Morse code.
- SSTV — Slow-Scan Television.
- Sporadic E — Sudden short-lived openings.