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Wilderness Keyboard wrote:
"See Guide to Transmitter Range from Artsci---." See the 19th edition of the "ARRL Antenna Book" pages 23.5 and 23.6. Eqn. 3: Dmiles = 1.415 sq rt Hfeet This can be rewritten: D = sq rt 2H Wasn`t it Albert Einstein who wrote something like: "Don`t make things any more complicated than necessary?" Solutions to Eqn 3 are plotted in Fig 6. Example: 20 ft gives 6 miles. The approximate sq rt of 40 is 6 miles. Example: 50 ft gives 10 miles. The approximate sq rt of 100 is 10 miles. Example: 200 Ft gives 20 miles. The approximate sq rt of 400 is 20 miles. Etc., etc., etc.. Best regards, Richard Harrison, KB5WZI |
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