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ID = 10214
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

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: rtt
Anonymous 10 Collector


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