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3B4

Information - Help 
ID = 4295
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Hytron; Salem (MA) 
Tube type:  Beam Power Tube   VHF 
Identical to 3B4 = DL98 = CV2240 = HD30
Similar Tubes
Other class quality (otherwise equal):
  3B4WA
First Source (s)
30.Apr.1948 : Electron Tube Registration List

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Transmittertube (Radio)
Filament Vf 2.5 Volts / If 0.165 Ampere / Direct / Battery =
Description

Instantaneous heating beam power amplifier intended for use as oscillator or frequency multiplier in VHF battery-operated transmitting sets. Up to 100MHz full rating.

Center-tapped filament allows operation at 1.25V, 330mA.

 
Text in other languages (may differ)
Tube prices 5 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
  usa3b4prc6sender_3.png
  3B4: Ausschnitt aus PRC-6-Service
Karl-Heinz Entrich
 
3b4_cbs.jpg
3B4: My tubes
Anonymous 413 Collector

 
3b4.png
3B4: Manufacturer's Literature
Emilio Ciardiello

 
3b4.png
3B4: Ratheiser Röhrenhandbuch
Heinz Höger


Usage in Models 1= 1949?? ; 1= 1949 ; 1= 1951? ; 1= 1951 ; 2= 1952 ; 2= 1953? ; 3= 1953 ; 1= 1956 ; 1= 1958 ; 2= 1962 ; 1= 1966??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):16


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