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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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AirplanesAndRockets.com

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February 1931 QST
Table of Contents

February 1931 QST

Table of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from QST, published December 1915 - present (visit ARRL for info). All copyrights hereby acknowledged.

Visit the ARRL website today for a complete digital archive of QST and their other publications.

February 1931

Vol. XV, Number 2

De Forest Radio Company Advertisement	1
The Neglected Current-Squared Galvanometer, by Paul E. Griffith	43
RCA Victor Company Radiotron UV-861 Advertisement	59

Posted May 7, 2015

TotalTemp Technologies (Thermal Platforms) - RF Cafe

Windfreak Technologies Frequency Synthesizers - RF Cafe

February 1931 QSTTable of Contents

February 1931 QST
Table of Contents