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ID = 4295
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):
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 =

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)
Dimensions (WHD)
incl. pins / tip
x 54 x 19 mm / x 2.13 x 0.75 inch
Tube prices 5 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 201, p. 393

3B4: Ausschnitt aus PRC-6-Service
Karl-Heinz Entrich † 7.21

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

More ...

Just Qvigstad
3B4: Ratheiser Röhrenhandbuch
Heinz Höger

More ...
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 with this tube (valve, valves, valvola, valvole, válvula, lampe):16

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 509     Replies: 0
3B4 als Ersatz der RES164
Jacob Roschy

Die 3B4 ist sehr gut als Ersatz der RES164 (B443S, L416D) geeignet, die u. A. im Volksempfänger VE301 zum Einsatz kam.

Mehr dazu finden Sie hier.

Noch mehr zum Ersatz der RES164 finden Sie hier.

M. f. G.
J. R.

End of forum contributions about this tube

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