One circuit TRF receiver
With flamed Bakelite front and Bakelite knobs. It has an Arbolite cabinet.
For short wave, medium wave and long wave.
The scale is lit from the back. The light bulb is a Philips 8046 (6 volts / 0.5 A). The scale ranges from 0-100. The loudspeaker is a 2161, diameter 16 cm.
At the rear are seven antenna terminals, marked I, II and III and 1 to 4, a ground bus, a gramophone connection, and a connection for an additional speaker. The antenna buses I, II and III are intended for the short wave reception; the buses 1 to 4 for medium and long wave.
The knobs from left to right: reaction, wavelength switch with the positions I, II, III, IV, V and VI, tuning, on/off.
Positions of the wavelength switch
I: 15-33 meters IV: 200-400 meters
II: 32-90 meters V: 400-950 meters
III: 85-200 meters VI: 950-2000 meters
The radio was made for export, for example for the Dutch East-Indies, where it was launched in March 1934. It was sold for f 97,50. The radio was also traded in a number of European countries like Belgium, France, Finland and Sweden.
The 938AS has a rejection filter. A wooden version of this model was made in Chechslovakia.
Data  
Serial number: 15708 F
Dimensions (w ◊ h ◊ d): 34.5 ◊ 31.5 ◊ 19.3 cm
Made in: 1933
Purchased in: 2017
Weight:  kg
Voltages: 108-253 volts ~
Valves  
Click on a valve for more information

Circuit
What was broadcast in 1933?
 

Listen to "The Golden King Shuffle" by Oscar Rabin and his Orchestra, recorded October 12, 1933

Back
A  SEM/SBR licence sticker indicates that the receiver was sold in Belgium.

Back with back panel removed
One of the E438 tubes (the grid detector) has a metal cap to counteract the influence of the loudspeaker magnet. A felt ring prevents vibrations.

Advertisement for a Philips 938A in Nieuws van de Dag voor Nederlands-IndiŽ, March 17, 1934

This page was last edited on 18.07.2019