LadyBug Technologies LB5944A RF Power Sensor - RF Cafe

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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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Sparton Models 7-46, 7-46PA, 8-46, 8-46PA Schematic & Parts List
February 1947 Radio News Article

February 1947 Radio News

February 1947 Radio & Television News Cover - RF Cafe

[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio & Television News, published 1919-1959. All copyrights hereby acknowledged.

At least for now, I am going to only scan and post schematics & parts lists like this one featuring the Sparton Models 7-46, 7-46PA, 8-46, 8-46PA radios in graphical format, rather than run OCR on them to separate the textual content. There are still many people who restore and service these vintage radios, and often it can be difficult or impossible to find schematics and/or tuning information. I will keep a running list of all data sheets to facilitate a search.

Sparton Models 7-46, 7-46PA, 8-46, 8-46PA Schematic & Parts List

Sparton Models 7-46, 7-46PA, 8-46, 8-46PA Schematic

Sparton Models 7-46, 7-46PA, 8-46, 8-46PA Parts List

Posted February 2, 2016

Radio Service Data Sheets

These schematics, tuning instructions, and other data are reproduced from my collection of vintage radio and electronics magazines. As back in the era, similar schematic and service info was available for purchase from sources such as SAMS Photofacts, but these printings were a no-cost bonus for readers. There are 227 Radio Service Data Sheets as of December 28, 2020.

RF Electronics Shapes, Stencils for Office, Visio by RF Cafe

Sparton Models 7-46, 7-46PA, 8-46, 8-46PA Schematic & Parts ListFebruary 1947 Radio News Article

Sparton Models 7-46, 7-46PA, 8-46, 8-46PA Schematic & Parts List
February 1947 Radio News Article