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Radio Preppers
General Category => General Discussion => Topic started by: gil on July 01, 2017, 04:39:37 AM
Title:
Book: Modern Practice of The Electric Telegraph.
Post by:
gil
on
July 01, 2017, 04:39:37 AM
Excellent online resource on making batteries and the wired telegraph.
http://www.insulators.info/books/mpet/ (http://www.insulators.info/books/mpet/)
Gil.
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