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Title: Siting Criteria for HF Communications Centers, NBS Tech Note 139 Post by: Steve - K4HX 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. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
https://ia700800.us.archive.org/2/items/sitingcriteriafo139utla/sitingcriteriafo139utla.pdf |