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Free testeasyradio-propagation
The theoretical line-of-sight range for a VHF transmitter at 400 ft and a receiver at 10,000 ft can be estimated by:
A
The sum of the altitudes divided by 100
B
1.23 x sqrt(400) NM only
C
1.23 x (sqrt(400) + sqrt(10000)) NM
D
1.23 x sqrt(10400) NM
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