Technician exam question T8D07
Subelement T8, SIGNALS AND EMISSIONS· Group T8D
T8D07
Which of the following describes DMR?
- A.A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel (correct answer)
- B.An automatic position tracking mode for FM mobiles communicating through repeaters
- C.An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
- D.A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
WhyDMR is a technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel. DMR uses time-division multiplexing to fit two separate digital voice conversations into the time slots of a single 12.5 kHz repeater channel, effectively doubling that channel's capacity, answer A. B and C describe unrelated APRS-style tracking and vehicle-logging functions, and D invents a dual-input transmission scheme that isn't how DMR actually works.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.