Antique radios, Old Time Radios

R31

ID = 16245

Country:

France

Brand:	La Radiotechnique (RT); Paris, Suresnes
Tube type:	Triode, vacuum Power/Output
	<1925 rare.

Identical to

R31

First year

1924 Saga of the Vacuum Tube, Tyne page 402

Base	Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament	Vf 3.5 Volts / If 0.08 Ampere / Direct / Battery =
Description	The brand is Radiotechnique. The name of the tube is Radio-Watt R31. Text in other languages (may differ)
Dimensions (WHD) incl. pins / tip	52 x 125 x mm / 2.05 x 4.92 x inch
Information source	Taschenbuch zum Röhren-Codex 1948/49 - - Manufacturers Literature 1924

R31: own collection
Peter den Boer

R31: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector

from Just Qvigstad

Usage in Models

2= 1923 ; 1= 1924?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of Peter den Boer (NL)

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