AC receiver
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AC receiver
Material: Oak cabinet with two diamond shaped coromandel wood decorations and ebonite front. A rheostat, on the left, controls the HF valve, the knob on the right hand side is for reaction control. The two big knobs are used for primary and secondary tuning. Both knobs have fine tuning. A wave range switch is situated between these knobs. The original price was f 172.50.
 Data  Valves Circuit
Serial number: none
Dimensions (w×h×d): 48.5 × 23 × 23.5 cm
Made in: 1928
Purchased in: 2011

Click on a valve for more information


Click on the circuit to enlarge

What was broadcast in 1928?


Listen to "Kijk je 's avonds even naar de sterren!" by Dajos Bela and His Dance Orchestra, recorded in 1928.

Back, before restoration
The AC mains section of the receiver can be seen on the right. It shows a Philips 451 mercury vapour-filled rectifier that does not belong there. The right tube is a 373 rectifier. A Ferrrix filament transformer can be seen behind the C142 valve. This is a strange addition, because the filament windings of the original transformer were undamaged. A home made Bekius variometer for inductive coupling is hidden behind the cardboard cover. 
Back, after restoration
The extra filament transformer was removed and some of the wiring was replaced.

Chassis (below)
The interstage transformer is by Körting, the tuning condensers were made by Brandes

AC mains section
Chassis (top view)
Advertentisement in Provinciale Overijsselsche en Zwolsche Courant, September 28, 1928

This page was last edited on 25.04.2019