radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

2B4

Information - Help 
ID = 20427
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: DuMont Labs, Allen B., Inc. 
Tube type:  Gas Triode   Text 
Identical to 2B4
Similar Tubes
Normally replaceable-slightly different:
  885
Other base and other heater:
  6Q5G
First Source (s)
02.Jan.1943 : Electron Tube Registration List rec. 315

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Technology / Measurement
Filament Vf 2.5 Volts / If 1.4 Ampere / Indirect
Description

Thyratron designed to operate as sawtooth generator in the timebase of oscilloscope instruments, such as the DuMont type 164 oscilloscope..
Similar to 885, registered to RCA about two years later.

 
Dimensions (WHD)
incl. pins / tip
x 102 x 38 mm / x 4.02 x 1.50 inch
Weight 37 g / 1.31 oz
Information source - - Manufacturers Literature   
Tube Lore (II)   p. 42
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

2b4_sock.png 2B4: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

More ...

Just Qvigstad
2b4-6q5g_1.png
2B4: Manufacturer's Literature
Emilio Ciardiello

More ...
Usage in Models 1= 1950??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg