Basic Qualification · B-007 Radio wave propagation · B-007-003-008
Skip distance is the:
- Amaximum distance a signal will travel by both a ground wave and reflected wave
- Bminimum distance reached by a signal after one reflection by the ionosphere
- Cmaximum distance reached by a signal after one reflection by the ionosphere
- Dminimum distance reached by a ground-wave signal
Correct answer: B — minimum distance reached by a signal after one reflection by the ionosphere. From the official ISED question bank, verified word for word.
Why
Skip distance is the minimum distance reached by a signal after one reflection by the ionosphere because the radio wave travels up to the sky and bounces back down, leaving a gap near the transmitter where the signal cannot reach. The full explanation — and one for every question — is in Pro.
Practise this section
Radio wave propagation is section B-007 of the Basic exam: How signals travel: the ionosphere and its layers, skip, ground wave, sporadic E, and which bands work when.
Drill B-007 — free, no account