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Superheterodyne receivers
Made of Pollopas (more information about this plastic below). The cabinets are white and chestnut brown and the loudspeaker grille and knobs are red. The term "Super Boum" indicates that the radio is capable of reproducing low tones. It also means "Big Party". The radio, with its colorful appearance, focused mainly on young people. It was presented at the Foire de Paris, which was held from May 21 to June 6, 1949. In an interview in 2005 the son of the founder, Mr Véchambre, told that the Super-Boom at the time did not receive the success expected by its creators.
For reception on medium wave (180-555 meters). Upon reaching the end of the medium wave scale, the radio automatically switches to a small segment of the long wave where the popular station Radio Luxembourg used to transmit on 1293 meters. Currently, RTL France can be heard in that segment, at 1281 meters. Further stations on the long wave can not be received. There are also models with a complete long wave; these were probably made later than 1949. In 1948 a reclassification of a large number of frequencies was agreed in Copenhagen. In March 1950 these changes came into effect. The white radio still has an old station layout; the brown radio has a new layout.
The intermediate frequency is 472 kHz. A scale light (6.3 volts, 0.1 A) rotates together with the pointer.
Antenna, earth can be connected at the rear.
The knobs from left to right: on/off/volume, tuning.
The Ticonal speaker has a diameter of 12 cm. Radialva also sold a loudspeaker, designed in the same style as the radio. The knobs have no function here, they are fixed. (see photo on the left).
The receiver was made in a number of colors: brown/red, brown/white, brown/mint green, white/red, white/mint green, white/blue and white/red.
The original price was FFr .
The brown and red version has a sticker with the name of the seller: F. Jeanson, Radio Gambetta, 144 Rue Gambetta, Reims.
Data Valves
Serial number: 71234 (white)
Dimensions (w×h×d): 20 × 23 × 15  cm
Made in: 1949/1950
Purchased in: 2018
Weight: 2.9 kg
Voltage: 110-125 volts ~ and =
Click on a valve for more information

Circuit Description (in French)
  Pollopas is the trade name of a duroplast plastic based on urea-formaldehyde resin. From the beginning of the 1930s many consumer products were made of this material when it was manufactured on a larger scale by Dynamit-Nobel in Germany from 1929. The basic ingredient was the same as that of Bakelite, but Bakelite needed to be pressed with a filler using very high pressure and temperature. Pollopas needs less pressure and temperature, making it easier to add dyes. Probably the name is derived from the name of the discoverer, the chemist F. Pollack. Catalin resembles Pollopas, but can not be used in combination with food. Catalin is also less firm.

What was broadcast in 1949?


Listen to "Barbados" by the Charlie Parker Quintet. Charlie Parker (as), Kenny Dorham (t), Al Haig (p), Tommy Potter (b), Max Roach (d). Recorded in the Salle Pleyel in Paris, May 1949

Side view  
This white model has red stripes over the top of the case. This decoration is not very common. The brown model is a bit more sober.
The back of the chassis The front of the chassis
A relay is located at the bottom right. This feature protects the scale light that is part of the rotating indicator (picture right) when switching the set on. The indicator is illuminated from below by a scale light (6.3 volts, 0.1 A).

Description of the radio when it was introduced at the Paris Fair in 1949

Leaflet of the Super Boum

Advertisement for the Radialva Super Boum in magazine "TSF pour tous", June 1949

This page was last edited on 28.04.2019