Форум радиолюбителей ДВ
форум Радиолюбительского ДВ портала => Технический раздел => Тема начата: Р6ЛДД от 08 Октябрь 2017, 20:37:01
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Electronics Today Int'l №№5,, 6. 7
Mike Bedford gets down real low and sets the scene for a project
using VLF for surface-to-underground communications. If you
want to know more about very low frequencies and life beneath
the Pennines, read on ...
https://yadi.sk/i/HZJfKc303Na89J (https://yadi.sk/i/HZJfKc303Na89J) стр.24-27
https://yadi.sk/i/wJuLbqdf3Na8Bg (https://yadi.sk/i/wJuLbqdf3Na8Bg) стр.38-43
https://yadi.sk/i/vnQulvnh3Na8Cu (https://yadi.sk/i/vnQulvnh3Na8Cu) стр.50-53