Repeater offsets, tone squelch, and net operating procedures for amateur radio operators.
29 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a repeater offset?
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The difference in frequency between the repeater's transmit frequency and receive frequency.- What is the typical offset for a 146 MHz repeater?
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Plus 0.6 MHz (the repeater transmits 0.6 MHz higher than it receives).- What is the typical offset for a 445 MHz repeater?
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Plus 5 MHz (the repeater transmits 5 MHz higher than it receives).- What is a duplex repeater?
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A repeater that receives and transmits on different frequencies simultaneously.- What is simplex operation?
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Transmitting and receiving on the same frequency, one at a time.- What does CTCSS stand for?
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Continuous Tone-Coded Squelch System.- What does DCS stand for?
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Digital-Coded Squelch.- What is tone squelch?
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A system that only allows your radio to receive signals carrying a specific tone or code.- Why is CTCSS or DCS used on repeaters?
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To prevent the repeater from transmitting interference from adjacent frequency users.- What is a net?
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A scheduled radio conversation where multiple operators check in to a net control station.- What is the role of a net control station?
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To manage the flow of traffic, recognize check-ins, and coordinate communications.- What should you do before transmitting on a repeater for the first time?
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Listen first to ensure the repeater is clear and to identify the proper offset and tone requirements.- What is a courtesy tone?
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An audible signal (usually a beep) that a repeater sends after each transmission to indicate it is ready for the next.- What does 'over' mean in ham radio?
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A signal that you have finished transmitting and are waiting for a response.- What is a 'check-in' to a net?
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When you identify yourself to the net control station and indicate you are present and ready to participate.
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