Antique radios, Old Time Radios
HK255X
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Country:
United States of America (USA)
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| Identical to |
HK255X
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| Base |
Other combinations of connections.
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| Filament |
Vf 14 Volts / If 30 Ampere / Direct / Specified voltage AC/DC |
| Description |
Pa = 500W
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).
With additional SCREEN GRID !
Text in other
languages (may
differ)
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| Information source |
The AWA Journal volume 10
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| Data Compliance |
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