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Radio Valve Data: 1915-1960Keith R Thrower OBE, The Valve Museum, April, 2022.
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Post-1925 amplifying valves, frequency changers and signal diodes | Type | Description | Filament | Anode | Auxillary Grid | Grid | ra | gm/go | RL | Po | Rk | | Year | | | Volts | Amps | Volts | mA | Volts | mA | -V | kΩ | mA/V | kΩ | Watts | Ω | Type | Ref | |
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Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
HX406† | RF or detector triode | 4.0* | 0.06 | 150 | 4.0 | - | - | 4.0 | 8.35 | 2.00 | | | | B4 | 1 | 1930 |
L406 | Output triode | 4.0* | 0.06 | | | - | - | | | | | | | B4 | 1 | |
LX414 | Output triode | 4.0* | 0.14 | | | - | - | | | | | | | B4 | 1 | 1930 |
PX4200 | Output triode | 4.0* | 2.00 | 550 | 45.0 | - | - | 36.0 | 2.5 | 4.00 | 7.0 | 5.9 | | B4 | 1 | |
RX406† | Triode | 4.0* | 0.06 | 150 | 1.1 | - | - | 2.9 | 24.0 | 1.05 | | | | B4 | 1 | 1930 |
UX406† | Detector or AF triode | 4.0* | 0.06 | 150 | 3.5 | - | - | 9.0 | 5.0 | 1.80 | | | | B4 | 1 | 1930 |
† Data taken from nearest Philips equivalents
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