General exam question G3B08
Subelement G3, RADIO WAVE PROPAGATION· Group G3B
G3B08
What does MUF stand for?
- A.The Minimum Usable Frequency for communications between two points
- B.The Maximum Usable Frequency for communications between two points (correct answer)
- C.The Minimum Usable Frequency during a 24-hour period
- D.The Maximum Usable Frequency during a 24-hour period
WhyMUF stands for the Maximum Usable Frequency for communications between two points. MUF stands for the Maximum Usable Frequency for communication between two specific points, the ceiling of the usable window on that path, answer B. It isn't a minimum-frequency figure, and it isn't defined over a fixed 24-hour period, those both misdescribe what MUF actually means.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
Related questions
- G3B01What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?
- G3B02What factors affect the MUF?
- G3B03Which frequency will have the least attenuation for long-distance skip propagation?
- G3B04Which of the following is a way to determine current propagation on a desired band from your station?
- G3B05How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?