форум Радиолюбительского ДВ портала > Технический раздел

THE ETI TROGLOGRAPH

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Р6ЛДД:
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 стр.24-27
https://yadi.sk/i/wJuLbqdf3Na8Bg стр.38-43
https://yadi.sk/i/vnQulvnh3Na8Cu стр.50-53

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