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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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Grunow 11A Chassis 11-Tube All-Wave Superheterodyne
Radio Service Data Sheet
August 1935 Radio-Craft

August 1935 Radio-Craft

[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio-Craft, published 1929 - 1953. All copyrights are hereby acknowledged.

This Radio Service Data Sheet provides schematics and parts lists for Grunow 11A Chassis 11-Tube All-Wave Superheterodyne receivers. Most - if not all - electronics servicemen had subscriptions to these magazines because they were a ready source of not just these service sheets, but because of the extensive articles offering advice on servicing radios and televisions. In fact, many electronics manufacturers had a policy of supplying service data only to bona fide shops. A large list is included at the bottom of the page of similar documents from vintage receiver schematics, troubleshooting tips, and alignment procedures.

Grunow 11A Chassis 11-Tube All-Wave Superheterodyne Radio Service Data Sheet

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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.

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Grunow 11A Chassis 11-Tube All-Wave SuperheterodyneRadio Service Data Sheet August 1935 Radio-Craft

Grunow 11A Chassis 11-Tube All-Wave Superheterodyne Radio Service Data Sheet

Grunow 11A Chassis 11-Tube All-Wave Superheterodyne
Radio Service Data Sheet
August 1935 Radio-Craft