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Author Topic: Siting Criteria for HF Communications Centers, NBS Tech Note 139  (Read 4857 times)
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Steve - K4HX
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« on: December 21, 2015, 12:02:06 AM »

Some good stuff in this Tech Note from 1962! Good treatment of how the ground and terrain impact the formation of the antenna pattern, often at great distances.

https://ia700800.us.archive.org/2/items/sitingcriteriafo139utla/sitingcriteriafo139utla.pdf
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