Which radios are short-range LOS?

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Prepare for the VT-IV Navigation Familiarization Exam II. Master navigation techniques with flashcards and multiple choice questions, with each answer fully explained. Boost your confidence and ace your exam!

Multiple Choice

Which radios are short-range LOS?

Explanation:
Short-range line-of-sight operation relies on a direct, unobstructed path between transmitter and receiver. VHF and UHF radios use this mode of propagation, so their practical range is limited by distance, terrain, and antenna height. HF signals don’t stay in a straight line; they reflect off the ionosphere to reach far beyond the horizon, making them long-range. SATCOM involves satellites in space; while there is a line-of-sight link to the satellite, the overall range is global rather than short-range. So the radios that are short-range LOS are VHF and UHF.

Short-range line-of-sight operation relies on a direct, unobstructed path between transmitter and receiver. VHF and UHF radios use this mode of propagation, so their practical range is limited by distance, terrain, and antenna height. HF signals don’t stay in a straight line; they reflect off the ionosphere to reach far beyond the horizon, making them long-range. SATCOM involves satellites in space; while there is a line-of-sight link to the satellite, the overall range is global rather than short-range. So the radios that are short-range LOS are VHF and UHF.

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