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RL7

Information - Help 
ID = 10214
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode   VHF 
Identical to RL7 = CV1136 = VR136 = EF54
Successor Tubes VR136  

Base Loctal-9-Pin (B9G) (Codex=Yd)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect
Description

Developed in 1940 as variant of EF50, with aligned grids and increased transconductance. Usable as low-noise RF amplifier up to 300MHz.

 
Information source
 
rl7_so.png
RL7: rtt
Anonymous 10 Collector

 

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