Antique radios, Old Time Radios
HK155
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Country:
United States of America (USA)
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| Identical to |
HK155
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| Filament |
Vf 5 Volts / If 10 Ampere / Direct / Specified voltage AC/DC |
| Description |
Pa = 150W
This gridless GAMMATRON was developed so as not to infringe with the Lee de Forest patent (owner RCA) on the control grid. Instead, the plate close to the filament has influence on the electron flow towards the other plate (anode). Tube was advertised on back cover of the 1936 Jones Radio Handbook. Production was limited.
Text in other
languages (may
differ)
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| Information source |
Tube Lore (II) p. 217
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HK155: F.C. Jones
Wolfgang Holtmann
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