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LT_Marconi

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ID = 87542
       
Country:
Great Britain (UK)
Brand: Marconi's Wireless Telegraph Co. Ltd.
Developer: Aberdeen Specialty Co; Philadelphia PA 
Tube type:  TRIODE (Detail uncertain)   Detector 
Identical to LT_Marconi

Base Europe 3-Pin B3 (Eu H) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Direct
Description

This tube was designed by Henry J Round for the Marconi Wireless Telegraph Co. The anode of this tube is nearly as wide as the bulb. It has small protrusions in both top and bottom of the anode to act as a spacer. This is possibly to avoid damage during vibration. The anode is connected to the top cap. It had Patent Pending No 28418-18

 
Information source -- Collector info (Sammler)   


Just Qvigstad
 
h_j_round_lt_al_larsen_collection.jpg

LT_Marconi
 

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