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UV201

Sensibly equivalent to:
201 C-301
    
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The UV201 was originally made by General Electric as the UV201, the Westinghouse version was slightly different electrically. Both makers were making for the newly formed RCA.
The first valves that RCA is selling in 1920 are the soft detector UV200 (argon gas) and the hard UV201 Amplifier. In 1922 General Electric introduces the dull emitter UV201A (thoriated tungsten filament).
The original box. Westinghouse was a partner in the formation of RCA. The box features the original RCA brand logo and is thus from the early 1920s and quite rare - especially in this condition.
Thanks to Joe Gruber for sending the images.
The envelope is  mm in diameter and, excluding the base pins, is  mm tall.
References: 1047Joe Gruber. Type UV201 was first introduced in 1920.

 

Pin Connections
UV
1
2
3
4
g1
f
f
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
5.0
1.0
20-100
Updated February 10, 2021.
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