Radio Circuit Page
April 1948 Radio News

April 1948 Radio News

April 1948 Radio & Television News Cover - RF Cafe Website

[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.

The most interesting item in this half dozen radio circuits from the April 1948 issue of Radio News magazine is the Meck FM Converter. From the Cool386 website, "The Meck FM converter is like other FM converters of the time, in that it is really just an FM tuner with an audio output. It does not actually convert the FM to AM (like the later FM converters used with AM car radios). This audio output is several hundred millivolts and is meant to be fed into the audio stage of an existing radio, which typically consists of a triode voltage amplifier and pentode output stage." Commercial FM radio broadcasts in the U.S. began in 1941. The first licensed commercial FM station was W47NV in Nashville, Tennessee, which started broadcasting on March 1 of that year. FM stereo radio broadcasts in the U.S. began on June 1, 1961. The first station to broadcast in stereo was WEFM (now WUSN) in Chicago, followed by WGFM (now WRVE) in Schenectady, New York.

Radio Circuit Page

Here, and on following pages, are circuit diagrams and parts lists of many new postwar radio receivers. Radio News will bring to you other circuits as quickly as possible after we receive them from manufacturers.

General Electric Models 354, 355

Westinghouse Models H-164, H-166, H-167

Belmont Model 4B115

Crosley Models 68TA, 68TW

Meck FM Converter

Zenith Model 8G005

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.

Exodus Advanced Communications Best in Class RF Amplifier SSPAs - RF Cafe Website

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...