Re: FT-243 FUN!

n5ib_2
 

A really interesting book, about the challenges Uncle Sam faced as he ramped up crystal production in the 40's, is

Crystal Clear, The struggle for reliable communications technology in World War II
Richard Thompson, Jr.; IEEE Press; Piscataway, NJ; 2007
ISBN 978-0-470-04606-7

N5IB

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