Offset — The gap between transmit and receive frequency.
On 2 meters it is usually 600 kHz, on 70 centimeters usually 5 MHz. Program it wrong and the repeater never hears you.
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Related words
- Wavelength — The physical length of one radio wave.
- Ionosphere — The layer that bounces HF signals back to earth.
- Gray line — The band of twilight moving around the earth.
- CTCSS / PL tone — A sub-audible tone that opens a repeater.
- RTTY — Radio Teletype.
- Sporadic E — Sudden short-lived openings.
- FM — Frequency Modulation. VHF and UHF voice.
- SSB — Single Sideband. HF voice.