Antique radios, Old Time Radios
PM256A
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Country:
Great Britain (UK)
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| Identical to |
PM256A
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| First year |
Jun.1930
Experimental Wireless & Wireless Engineer Mullard Advertisement June 1930
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| First Source
(s) |
1930 : History of the British Radio Valve to 1940 p. 165
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6 Volts / If 0.25 Ampere / Direct / Battery = |
| Description |
Va <200; Ra 1,400 ohms gm 2.6mA/V at Va=100 and Vg=0
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| Information source |
- - Manufacturers Literature Advertisement June 1930
Babani, International Radio Tube Encyclopaedia p. 130 & 131
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PM256A: Fin Stewart
Fin Stewart
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Just Qvigstad
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