Atwater Kent Model 305Z 5-Tube 32 V. D.C. Superhet
Radio Service Data Sheet
July 1936 Radio-Craft

July 1936 Radio-Craft

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

For many years I have been scanning and posting schematics & parts lists like this one featuring the Atwater Kent Model 305Z 5-Tube 32 V. D.C. Superhet radio. It appeared in a 1936 issue of Radio−Craft magazine. OCR (optical character recognition) software is run on them to separate the textual content, which allows search engines to capture words that helps people find information. 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 keep a running list of all data sheets at the bottom of the page. The thumbnail image of the Atwater Kent Model 305Z radio was found on the RadioMuseum.com website.

Atwater Kent Model 305Z 5-Tube 32 V. D.C. Superhet
Radio Service Data Sheet

(Has 3 wave bands; dynamic speaker; dual-lighted dial.)

The voltages for this receiver are shown on the schematic diagram near the portions of the circuit to which they apply. When aligning the set, the volume control should be turned on full and the tone control set at high pitch. For trimming the R.F. end of the set, it is best to connect a 250 mmf. condenser in series with the antenna lead of the set. When the I.F. is aligned, one of the manufacturer's coupling units should be connected, the unit being placed on the control-grid cap of the I.F. or first-detector tube as needed, and the lead from the circuit connected to the coupling unit. The dial pointer should be at 538 kc. when the rotor of the tuning condenser is fully meshed. The short-wave range is aligned at 15 mc. and the broadcast range at 1,500 and 560 kc. There is no trimmer for the police band. Align the I.F. transformers at 264 kc.

Arthur Atwater Kent

Atwater Kent was an American inventor, entrepreneur and manufacturer of radio equipment. He was born on December 12, 1873, in Cassopolis, Michigan and died on August 30, 1949, in Philadelphia, Pennsylvania. He was a pioneer in the development of radio technology and his impact on the industry is still felt today.

Kent began his career as an electrical engineer, working for various companies before starting his own business in 1918. He founded the Atwater Kent Manufacturing Company in Philadelphia, Pennsylvania, with the goal of producing high-quality radio sets for the public. The company quickly became one of the largest radio manufacturers in the United States, producing over one million radio sets between the 1920s and 1930s.

One of Kent's innovations was the development of the "breadboard" radio set, which was easy to assemble and repair. He also made use of more efficient components, such as high-voltage power supplies, which allowed his radio sets to produce better sound quality. His radios were also known for their beautiful wooden cabinets, which were handcrafted and came in a variety of styles and finishes to suit any decor.

Atwater Kent was a visionary who understood the potential of radio as a means of communication and entertainment. He was an advocate for the development of commercial radio broadcasting and he supported the establishment of the National Broadcasting Company (NBC) in 1926. This network helped to bring radio to a wider audience and it was a major factor in the growth of the radio industry.

In addition to his contributions to the radio industry, Kent was also a philanthropist. He supported a number of educational and scientific organizations, including the Franklin Institute, and he established the Atwater Kent Foundation, which provided grants for scientific research.

Posted August 19, 2022
(updated from original post on 8/27/2015)

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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Atwater Kent Model 305Z 5-Tube 32 V. D.C. SuperhetRadio Service Data Sheet July 1936 Radio-Craft

Atwater Kent Model 305Z 5-Tube 32 V. D.C. Superhet
Radio Service Data Sheet
July 1936 Radio-Craft