Radiotelephony basics · Question 9 of 12
Approximately what is the VHF range to a ground station at sea level when you are flying at 2 500 ft?
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Answer
- C About 60 NM
Explanation
A rule of thumb is: range in NM ≈ 1.23 × √(height in ft), added for transmitter and receiver. For 2 500 ft this gives 1.23 × 50 ≈ 61 NM; the antenna on the ground hardly contributes here. Mountains and buildings can restrict the range further.