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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 |
4VBE | See 470BE | | | | | | | | | | | | | | | |
206 HF | RF or detector triode | 2.0* | 0.06 | 80 | | - | - | | 50.0 | 0.24 | | | | B4 | 1 | 1926 |
206 LF | AF triode | 2.0* | 0.06 | 80 | | - | - | | 25.0 | 0.28 | | | | B4 | 1 | 1926 |
210 HF | RF or detector triode | 2.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | |
| AF triode | 2.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | |
210 RC | RCC triode | 2.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | |
210SG | RF tetrode | 2.0* | 0.10 | 150 | | 80 | | | 240.0 | 0.90 | | | | B4+tc | 2 | 1928 |
212 HF | RF or detector triode | 2.0* | 0.12 | 80 | | - | - | | 45.0 | 0.29 | | | | B4 | 1 | 1926 |
212 LF | AF triode | 2.0* | 0.12 | 80 | | - | - | | 20.0 | 0.35 | | | | B4 | 1 | 1926 |
225 PV | Output triode | 2.0* | 0.25 | | | - | - | | | | | | | B4 | 1 | |
234 HF | General-purpose triode | 2.0* | 0.34 | 100 | | - | - | | 50.0 | 0.20 | | | | B4 | 1 | 1926 |
234 LF | AF triode | 2.0* | 0.34 | 100 | | - | - | | 25.0 | 0.28 | | | | B4 | 1 | 1926 |
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234 P | AF or output triode | 2.0* | 0.34 | 120 | | - | - | 2-6 | 13.0 | 0.42 | | | | B4 | 1 | 1926 |
234 P (Astra) | AF or output triode | 2.0* | 0.34 | 120 | | - | - | 2-6 | 12.0 | 0.62 | | | | B4 | 1 | 1926 |
234 PV | AF or output triode | 2.0* | 0.34 | | | - | - | | 12.0 | | | | | B4 | 1 | |
306 HF | RF triode | 3.0* | 0.06 | 80 | | - | - | | 50.0 | 0.20 | | | | B4 | 1 | |
306 LF | AF triode | 3.0* | 0.06 | 80 | | - | - | | 25.0 | 0.28 | | | | B4 | 1 | 1926 |
312P, 312 PV | AF or output triode | 3.0* | 0.12 | 120 | | - | - | 3-9 | 10.0 | 0.60 | | | | B4 | 1 | 1926 |
406 HF | RF or detector triode | 4.0* | 0.08 | 80 | | - | - | | 40.0 | 0.37 | | | | B4 | 1 | 1926 |
406 LF | Detector or AF triode | 4.0* | 0.08 | 80 | | - | - | 3.0 | 18.0 | 0.44 | | | | B4 | 1 | 1926 |
410 HF | RF or detector triode | 4.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | |
410 RC | RCC triode | 4.0* | 0.10 | | | - | - | | | | | | | B4 | 1 | |
412P 412 PV | AF or output triode | 4.0* | 0.12 | 120 | | - | - | 3-9 | 12.0 | 0.67 | | | | B4 | 1 | 1926 |
418 PV | Output triode | | | | | - | - | | | | | | | B4 | 1 | |
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434P, 434 PV | AF or output triode | 4.0* | 0.34 | 120 | | - | - | 3-9 | 12.0 | 0.67 | | | | B4 | 1 | |
470 BE, 4VBE | General-purpose triode | 4.0* | 0.70 | 80 | | - | - | | 25.0 | 0.28 | | | | B4 | 1 | 1926 |
525 | Output triode | 5.5* | 0.25 | 120 | 7.0 | - | - | 4.5 | 8.3 | 0.80 | | | | B4 | 1 | 1927 |
525B | General-purpose triode | 5.5* | 0.25 | 120 | 2.0 | - | - | 1.5 | 40.0 | 0.45 | | | | B4 | 1 | 1926 |
534P, 534 PV | Output triode | 5.5* | 0.34 | 120 | | - | - | 3-9 | 7.0 | 1.00 | | | | B4 | 1 | 1926 |
606P, 606 PV | AF or output triode | 6.0* | 0.08 | 120 | | - | - | 3-9 | 12.0 | 0.58 | | | | B4 | 1 | 1926 |
625 PV | Output triode | | | | | - | - | | | | | | | B4 | 1 | |
634 PV | Output triode | | | | | - | - | | | | | | | B4 | 1 | 1927 |
Aston | Output triode | 2.0* | 0.34 | 120 | | - | - | 2-6 | 12.0 | 0.62 | | | | B4 | 1 | 1926 |
R.5V | General-purpose triode | 5.0* | 0.70 | 30-120 | | - | - | 3-6 | 30.0 | 0.30 | | | | B4 | 1 | 1926 |
SG2 | RF tetrode | 2.0* | 0.10 | 150 | | 75-80 | | | 240.0 | 0.90 | | | | B4+st | 21 | 1928 |
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