April 1969 Electronics World
Table of Contents

April 1969 Electronics World

Table of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from Electronics World, published May 1959 - December 1971. All copyrights hereby acknowledged.

April 1969

Vol. 81, No. 4

Ionospheric-Propagation Predictions, by H. Charles Wood	27
Importance of Filters, by A. H. Seidman	37
LC Filters, by Stephen Rosenfield	40
Practical Operating Limits for Filters	44
Filters for Microwaves, by Robert Felsenheld	45
R. F. Interference Filters, by Benedict Rosen	48
Crystal Filters, by Robert L. Kent	50
Ceramic Filters, by Reg Zimmerman	53
Beads Block Noise	55
Mechanical Filters, by Donovan A. Southworth	56
Active Filters, by James L. Hogin	58
UJT Monocycle Multivibrator	61
Mac's Service Shop: Keeping Abreast of Your Field, by John T. Frye	62
Tech-Themed Comic	63

Posted December 8, 2017

Crane Aerospace & Electronics (RF & Microwave) - RF Cafe Website

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 lady's voice announced "You've Got Mail" when a new message arrived...