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Old December 22nd 08, 05:13 PM posted to rec.radio.amateur.antenna
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Default NEC Evaluations


In this example the vertical half wave dipole, with the base 30 ft above
an average ground, on 147.3 MHz, shows a field strength at ground
level of: 0.418 uV/m from 30 W into the antenna.

Frank


And, obviously, at 50 km.


 
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