Basic Qualification · B-007 Radio wave propagation · B-007-008-011
In which frequency range is meteor scatter most effective for extended-range communication?
- A10 MHz to 30 MHz
- B3 MHz to 10 MHz
- C100 MHz to 150 MHz
- D30 MHz to 100 MHz
Correct answer: D — 30 MHz to 100 MHz. From the official ISED question bank, verified word for word.
Why
Meteor scatter works best between 30 MHz and 100 MHz because the ionized trails left by burning meteors are dense enough to reflect these higher frequencies back to Earth, enabling communication over hundreds of kilometres. 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