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Regenerative receiver with 3 valves

The cabinet is of mahogany with a hinged lid and a polished black Formica panel with engraved texts.
Two sockets for headphones or loudspeaker (two or three valves) are situated on the right of the three valves. The four knobs below the valves from left to right: fine tuning, tuning, reaction control (volume) and a rheostat for the filament voltage of the three valves. The big knobs are not the right set. This radio needs knobs with a 180 scale. Binding posts for batteries are situated inside the cabinet and on the back of the set.
The original price was $125.
Data Valves
Dimensions (whd): 39 x 25.5 x 36 cm
Serial number: 30479
Made in: 1923
Purchased in: 2012
Sold in: 2022
Click on a valve for more information

Circuit

What was broadcast in 1923?

 

Listen to "Do Doodle Oom" by the orchestra of Fletcher Henderson, recorded September 13, 1923

Inside (1)
A variable mica capacitor can be seen in the middle. It operates together with the variometer tuning.
Inside (2)
Advertisement in Radio Broadcast, March 1924

This page was last edited on 06.09.2022