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Superheterodyne receiver
Designed as a world globe made of black Bakelite and metal. It has two separate chassis, dividing the electronics between the globe and the base. The connection between the base and the globe is made of gilded metal. Continents and oceans are gold-painted. The illuminated dial is seen through a small rectangular opening in the globe.
Circling the globe at the equator is a metal ring. At the top is a decorative brass finial showing the compass directions. Large, wheel-shaped knobs control power + volume and tuning.
Inside is a conventional 1930s AM receiver, using five tubes. Since the radio has no RF amplifier, a long external antenna is a necessity. The radio covers 130-545 meters, (police bands (150-200 meters) and medium wave). The intermediate frequency is 175 kHz.
A switch on the chassis allows the radio to be switched from AC to DC.
A resistance wire (154 ohms) was part of the power cord. It served as a series resistor. For security reasons a diode and a 39 ohms / 5 W resistor was chosen when restoring the radio.
The radio was made in the colours maroon, black and ivory.
It was designed by Raymond Loewy (photo). He was born in Paris on November 5, 1893 and died in Monaco on July 14, 1986. Loewy was one of the best known industrial designers in the USA. His motto was simple: "Between two products equal in price, function and quality, the one with the most attractive exterior will win".
  He worked - among others - for Lockheed, Coca-Cola and Greyhound and designed logos and packaging for Spar, Shell, Exxon, and Lucky Strike.
The original price of the radio was $60. The radio was introduced in October 1933 (see part of an article in Radio Retaling, October 1933, left).
Data Valves
Serial number 728719
Dimensions (h × w): 39.4 × 22.9 cm
Made in: 1933
Purchased in: 2016
Voltage: 100-125 ~ + -
   

Circuit

Scale

What was broadcast in 1933?
 

Listen to "Stringin' Along On A Shoe String", by Henry Allen, Coleman Hawkins & Their Orchestra with Henry Allen (tp,vo), William "Dicky" Wells (tb), Hilton Jefferson (as), Coleman Hawkins (ts), Bernard Addison (bj), John Kirby (b + brass bass), Walter Johnson (d), recorded 21 July 21, 1933.
Top view with the upper part of the globe removed
Under-chassis view
Patent drawings showing the overall and detailed design of the radio
The radio was introduced in this advertisement in Radio Retaling, November 1933
Advertisement on the front page of Radio Retailing, December 1933.

This page was last edited on 25.04.2019