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Kirt Blattenberger (KB3UON)

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Allied Radio Corp., Knight Model E10913
Radio Service Data Sheet  (Chassis 118B)
January 1939 Radio-Craft

January 1939 Radio-Craft

January 1939 Radio-Craft Cover - RF Cafe[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.

Photographs of some - maybe even most - of the vintage vacuum tube radios are difficult or even impossible to find online. This Knight Model E10913 tabletop radio manufactured by Allied Radio Corporation is an example. When I post these Radio Service Data Sheets from magazines like Radio-Craft, I always attempt to find a photo of a restored radio or at lease a one in decent condition. Websites like The Radio Attic and Radio Museum have large inventories of photos, schematics, and sometimes a description and company history. eBay and Etsy are also a good place to look. 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. Accordingly, a running list of all data sheets is at the bottom to facilitate a search. Most radio service shop technicians were able to troubleshoot and align these simple sets without any kind of documentation.

Allied Radio Corp., Knight Model E10913 Radio Service Data Sheet

Allied Radio Corp., Knight Model E10913 Radio Service Data Sheet, January 1939 Radio-Craft - RF Cafe4-Tube Battery Superhet.; Uses New 1.4V. Tubes; P.M. Dynamic Speaker; Single 1,000-Hour Battery; "A" Drain Only 0.2-A.; "B" Drain Only 0.8 ma.


Before starting alignment, check the tuning dial adjustment by tuning condenser to full capacity and moving the dial needle to line up with the last line at the low-frequency end of the dial scale. Align the set in the order given.

Voltage measurements from socket contacts to ground with 1,000 ohms/volt meter; 90 volts "B"; 1½ volts "A". "NC" above means no connections.

Above, schematic circuit of the battery receiver illustrated at left.



Posted October 17, 2023
(updated from original post on 2/19/2016)

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.

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

1996 - 2024


Kirt Blattenberger,


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...

Copyright  1996 - 2026

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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