September 1939 QST
Table of Contents

September 1939 QST

September 1939 QST Cover - RF CafeTable of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from ARRL's QST, published December 1915 - present. All copyrights hereby acknowledged.

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September 1939

Vol. XXIII, Number 9


Hetrofil - An Aid to Selectivity, by Raymond W. Woodward 11
High-Q Tank Circuit for Ultra-High Frequencies, by Arnold Peterson 19


September 1939 QST Table of Contents - RF Cafe



Posted May 11, 2016