Rubis Type 72
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Five-valve superheterodyne receiver
Elongated model in Art Deco style. Polished walnut cabinet with sawn ornaments, Bakelite knobs and Bakelite edge around the celluloid wavelength scale. Metal pointer. A different part of the scale is illuminated by coloured lamps for every selected wavelength.
The knobs from left to right: on/off/tone control, volume control, wave length switch. The tuning knob is in the middle.
The radio is equipped with two loudspeakers with field exitation: one with the exitation coil in series, and one with the coil in parallel. Loudspeaker diameter 22 cm.
At the rear are the antenna and earth connections, and a gramophone connection.
Receives short wave (30-80 meters), medium wave (180-600 meters) and long wave (800-2000 meters). The intermediate frequency is 110 kHz. Most of the coils of the radio are contained in two rotating coils drums. These drums rotate past a number of contacts when the wavelength switch is turned. The intermediate frequency coils are located below the two drums.
An elegant matching bentwood table could be supplied as well for Bfr 360. The price of a table for the smaller version of the radio, shown on the right, was Bfr 350.
David Roussel has painstakingly recreated these tables, a laborious and complex process, requiring special molds. I now own one of these tables.
It seems that the type numbers of Rubis radios were issued per season. The first digit indicates the year. Type numbers 53, 55 and 56 are from the year 1935 and the first models of the radio presented here appear (so far as is now known now) in 1936 as type 60, 62 and 63. The differences between these radios are described below with reference to the later models 70, 72 and 73 from 1937.

License plate and serial number

Connections for earth, antenna and gramophone

Type 60 or 70 on a matching table
There are two main types of this receiver, a large model (types 72 and 73) and a somewhat smaller model (type 70).
The smaller model has a width of 60 cm, 5 tubes and two 16 cm loudspeakers. The large models, type 72 and 73, have a width of 80 cm and two 22 cm loudspeakers. Type 72 is equipped with 5 tubes, type 73 has 6 tubes. In addition, there was the 72AP with a frame antenna and the 72CAP, the DC version of the 72AP.
The original price of model 72 was Bfr 2600. (Information from a brochure for the season 1937).
Data Valves
Serial number: 8783  license: 1019 4
Dimensions (h × w × d): 32.5 × 80 × 28  cm
Made in: 1937
Purchased in: 2016
Weight: 19.3 kg
Voltages: 110/130/220/240 volts
Click on a valve for more information

  Restoration report

What was broadcast in 1937?


Listen to "52nd Street", by Fud Candrix et son Orchestre. Bass: Camille Marchand, Clarinet: Bobby Naret, Jo Magis, Drums: Armant "Art" Dralandts, Guitar: Reggie Denys, Piano: Raymond "Coco" Colignon, Saxophone [Alto]: Bobby Naret, Jo Magis, Trombone: Nick Frérar, Trumpet: Georges Clais, Roger Doneux, Vocals: Wally Sluyzer. Recorded in Brussels on November 25th, 1937.

The back of the radio

The radio on its matching table

Top view of the chassis
Behind the three shielded valves on the left are two coil drums, containing most of the coils of the radio. These drums rotate past a number of contacts when the wavelength switch is turned.
Under-chassis view
The inside of one of the coil drums, showing 4 coils, a 20 nF capacitor and a 10 k resistor   Powdered-iron dust core in one of the coils
Coloured lamps illuminate the station scale while switching between short wave, long wave and medium wave. With the switch in the position "gramophone" the whole scale is illuminated.

This page was last edited on 23.10.2022