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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 |
BW303 | Output triode | 2.0* | 0.32 | 150 | 11.0 | - | - | 25.0 | 2.7 | 1.10 | 6.0 | 0.25 | | B4 | 1 | 1931 |
| Output triode | 2.0* | 0.32 | 150 | 12.0 | - | - | 12.0 | 1.9 | 3.40 | 5.5 | 0.33 | | B4 | 1 | 1931 |
BW1304 | Output triode | 2.0* | 0.20 | 150 | 6.0 | - | - | 6.0 | 4.0 | 3.20 | 8.0 | 0.13 | | B4 | 1 | 1931 |
BX604 | Output triode | 2.0* | 0.20 | 150 | 10.0 | - | - | 12.0 | 4.0 | 1.50 | 8.5 | 0.17 | | B4 | 1 | 1931 |
BY3 | Output pentode | 2.0* | 0.30 | 150 | 10.0 | 150 | 8.0 | 4.5 | | | 7.5 | 0.45 | | B4+st B5+tc | 26 6 | 1933 |
BY6 | RF tetrode | 2.0*" | 0.15 | 150 | 0.7 | 60 | | | 300.0 | 1.10 | | | | B4+tc | 2 | 1931 |
BY1210 | Low-μ triode | 2.0* | 0.11 | 150 | 4.0 | - | - | 5.0 | 10.0 | 1.20 | | | | B4 | 2 | 1931 |
BY1814 | General-purpose triode | 2.0* | 0.12 | 150 | 3.0 | - | - | 3.0 | 18.0 | 1.30 | | | | B4 | 2 | 1931 |
BY1815 | Low-μ triode | 2.0* | 0.12 | 150 | 3.0 | - | - | 2.5 | 14.0 | 1.30 | | | | B4 | 2 | 1933 |
BY2010 | General purpose triode | 2.0* | 0.10 | | | | | | | | | | | B4 | 1 | |
| General purpose triode | 2.0* | 0.11 | 150 | 2.0 | - | - | 1.5 | 20.0 | 1.00 | | | | B4 | 1 | 1931 |
BY2023 | General purpose triode | 2.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | |
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DW2 | RF tetrode | 4.0 | 1.00 | 150 | 2.5 | 75 | | | 200.0 | 0.85 | | | | B5+tc | 2 | 1931 |
DW3 | Output pentode | 4.0* | 0.23 | 300 | 20.0 | 200 | 5.0 | 19.0 | | | 7.5 | 1.5 | 1000 | B4+st B5 | 26 6 | 1932 |
DW6 | RF tetrode | 4.0 | 1.00 | 200 | 0.75 | 85 | | | 800.0 | 1.20 | | | | B5+tc | 2 | 1931 |
| RF tetrode | 4.0 | 1.00 | 200 | 5.0 | 80 | | | 200.0 | 3.00 | | | | B5+tc | 2 | 1932 |
DW8 | VM RF tetrode | 4.0 | 1.00 | 250 | 9.0 | 100 | | 1.5 | | 2.00 | | | | B5+tc | 2 | 1932 |
DW9 | Output pentode | 4.0 | 1.00 | 300 | 32.0 | 250 | 7.0 | 10.5 | | | 7.8 | 2.0 | 300 | B5+st | 16 | 1932 |
DW302 | Output triode | 4.0* | 1.05 | 250 | 33.0 | - | - | 50.0 | 1.8 | 1.90 | 4.0 | 1.6 | 1500 | B4 | 1 | 1931 |
DW702 | Output triode | 4.0* | 0.23 | 200 | 18.0 | - | - | 20.0 | 2.25 | 3.20 | 5.0 | 0.6 | 1200 | B4 | 1 | 1931 |
DW704 | Output triode (IH) | 4.0 | 1.00 | 150 | 10.0 | - | - | 14.0 | 4.5 | 1.50 | 7.0 | 0.18 | 1200 | B5 | 1 | 1931 |
DW802 | Output triode (IH) | 4.0 | 0.57 | 250 | 26.0 | - | - | 25.0 | 2.0 | 4.00 | 5.0 | 1.3 | 1000 | B5 | 1 | 1932 |
DW1003 | Output triode (IH) | 4.0 | 1.00 | 200 | 20.0 | - | - | 12.5 | 3.3 | 3.30 | 7.0 | 0.38 | 1000 | B5 | 1 | 1931 |
DW1508 | Low-μ triode (IH) | 4.0 | 1.00 | 150 | 5.0 | - | - | 6.0 | 7.5 | 2.00 | | | | B5 | 1 | 1931 |
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DW4011 | Medium-μ triode | 4.0 | 1.00 | 200 | 5.0 | - | - | 5.0 | 11.0 | 3.60 | | | | B5 | 1 | 1933 |
DW4023 | General purpose triode | 4.0 | 1.00 | 150 | 2.5 | - | - | 2.0 | 23.0 | 1.75 | | | | B5 | 1 | 1931 |
DX502 | Output triode | 4.0* | 0.15 | 150 | 12.0 | - | - | 17.0 | 2.1 | 2.40 | 5.0 | 0.33 | | B4 | 1 | 1931 |
GW402 | Output triode | 7.5* | 1.25 | 450 | 55.0 | - | - | 80.0 | 1.8 | 1.80 | 4.0 | 6.0 | 1750 | B4 | 1 | 1932 |
Rectifiers | Type | Class | Cathode | Va | DC Ia | PIV | DC Vo | Base | Year | | | Type | Volts | Amps | Max RMS | mA | Volts | Volts | Type | Ref | Year |
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Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
D3-50B | FW | DH | 4.0 | 0.70 | 300 | 50 | | | B4 | 5 | 1931 |
D3-80B | FW | DH | 4.0 | 2.00 | 350 | 80 | | | B4 | 5 | 1931 |
D5-125B | FW | DH | 4.0 | 2.10 | 500 | 750 | | | B4 | 5 | 1932 |
G7-85 | HW | DH | 7.5 | 1.25 | 700 | 85 | | | B4 | 5 | 1932 |
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