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ID = 56220
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   SHF/EHF (>3 GHz) 
Identical to TD03-10
Similar Tubes
Normally replaceable-slightly different:
  5861 ; CV273 ; CV5458 ; DET22 ; DET22D ; DET22E ; DET22R ; DET22S ; EC55 ; ME1001
Predecessor Tubes ME1001  
Successor Tubes TD03-10D   TD03-10F   TD03-10E   TD03-10G  

Base COAXIAL in general (X..)
Filament Vf 6.3 Volts / If 0.4 Ampere / Half indirect
Description Disc seal planar triode without internal feedback, intended for use in common-grid, grounded-anode coaxial oscillators or as power amplifier.
250V at 20mA anode, with -3.5V grid bias. 6.0 mA/V Gm, gain 30. Up to 3 GHz operating frequency.
Equivalent to MOV DET22. 
Information source - - Manufacturers Literature   
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TD03-10: Private collection
Emilio Ciardiello

More ...
TD03-10: Manufacturer's Literature
Emilio Ciardiello


Collection of a member from FIN

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