TRF receiver for AC
In an oak cabinet with Bakelite knobs and black feet. The receiver was made by Van der Heem & Bloemsma, The Hague. The front shows two big knobs for primary and secondary tuning. The right knob is used for reaction control. Two push-pull wave length switches are situated below the big knobs.
The metal version of this radio was introduced at the Trade Fair, September 4-13, 1928 in Utrecht. In the beginning of 1929, shortly before the Spring Trade Fair, 19-28 February in Utrecht, the wooden version was announced. A Sterling 75 loudspeaker was recommended for this radio.
The wooden model was reviewed in Radio Expres, February 22nd, 1929. Production of the metal version continued. The model in oak cost fl 10,- more.
The metal version of the Erres KY. Both side panels are made of wood. The small knob between the two bigger ones is not original.
Data Valves  
Serial number:  
Produced: 900
Dimensions (whd): 24,5  52  26,5 cm
Made in: 1929
Purchased in: 2011
Voltage: 220 V ~
   
Click on a valve for more information

Circuit

What was broadcast in 1929?

 

Listen to "Singing in the Rain", by Pete Mandell and his Orchestra, recorded November 14, 1929

Back with closed back panel
Back
Under-chassis view
On the left side we can see the Erres mains transformer and choke coil. Two Waldorp push-pull wave length switches can be seen above. On the right hand side the Erres Junior coupling transformer. Aerial capacitors are by Pilot Igranic, the glass capacitors and the detectors grid lead resistor are by Loewe; all other resistors are by Dralowid. The filament leads are shielded by a lead covering.

Advertisement for the Erres KY in newspaper Het Centrum, February 15th, 1929... ...and in the program guide of broadcasting organisation AVRO, dated April 26th, 1929

Deze pagina is voor het laatst bijgewerkt op zaterdag 27 april 2019