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ID = 47290
Brand: Common type Worldwide tube/semicond.
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to CV2577 = 212E = 4212E = CV1252 = VT58_GPO = ML212E = AF350 = MY3-275 = E1013 = 38112
Successor Tubes VT58_GPO  

Base Large 4 pin Bayonet
Was used by Transmittertube (Radio)
Filament Vf 14 Volts / If 6 Ampere / Direct / Parallel, (AC/DC)

- Audio application: A mode amplifier /grid bias modulator / B mode Audio amp or modulator.
- RF application: Mode B or C Amplifier, modulated or unmodulated / RF Oscillator unmodulated.
4-pin jumbo base.

Dimensions (WHD)
incl. pins / tip
x 345 x 92 mm / x 13.58 x 3.62 inch
Weight 744 g / 26.24 oz
Information source -- Original-techn. papers.   
CV2577: Manufacturer's Literature
Emilio Ciardiello


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