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.
Similar to 885, registered to RCA about two years later. 
Information source - - Manufacturers Literature   
 
2b4_sock.png
2B4: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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


from Just Qvigstad

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