Majestic Chassis Models 380 A.C. T.R.F., and 400 A.C.-D.C.
Superheterodyne Radio Service Data Sheet
August 1933 Radio-Craft

August 1933 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.

Here is the Majestic Chassis Models 380 A.C. T.R.F., and 400 A.C.-D.C. Superheterodyne schematic and parts list as featured in a 1933 edition of Radio-Craft magazine. As mentioned many times in the past, I post these online for the benefit of hobbyists looking for information to assist in repairing or restoring vintage communication equipment. Even with the availability of SAMS Photofacts, there are some models that cannot be found anywhere other than in these vintage magazines.

Majestic Chassis Models 380 A.C. T.R.F., and 400 A.C.-D.C. Superheterodyne Radio Service Data Sheet

Posted March 11, 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 255 Radio Service Data Sheets as of April 30, 2025.

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...

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Majestic Chassis Models 380 A.C. T.R.F., and 400 A.C.-D.C.Superheterodyne Radio Service Data SheetAugust 1933 Radio-Craft

Majestic Chassis Models 380 A.C. T.R.F., and 400 A.C.-D.C.
Superheterodyne Radio Service Data Sheet
August 1933 Radio-Craft