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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 |
1S5 | Diode & RF pentode | 1.4* | 0.05 | 67.5 | 1.6 | 67.5 | 0.4 | 0 | 600.0 | 0.625 | | | | B7G | 5 | |
1T4 | VM RF pentode | 1.4* | 0.05 | 90.0 | 3.5 | 67.5 | 1.4 | 0/16 | 500.0 | 0.90 | | | | B7G | 2 | |
3A4 | Output beam tetrode | 1.4* | 0.20* | 150 | 13.3 | 90.0 | 3.2 | 8.4 | 100.0 | 1.90 | 8.0 | 0.7 | | B7G | 7 | |
3S4 | Output beam tetrode | 1.4* | 0.10* | 90 | 7.4 | 67.5 | 1.4 | 7.0 | 100.0 | 1.58 | 8.0 | 0.27 | | B7G | 6 | |
6AL5 | Double diode | 6.3 | 0.30 | 150 | 9.0 | | | | | | | | | B7G | 18 | |
6AM5 | Output pentode | 6.2 | 0.20 | 250 | 16.0 | 250 | 2.4 | 13.5 | 130.0 | 2.60 | 16.0 | 1.4 | 730 | B7G | 25 | |
| RF pentode | 6.3 | 0.30 | 250 | 10.0 | 250 | 2.50 | 2.0 | 1M | 7.5 | | | | B7G | 21 | |
| Output beam tetrode | 6.3 | 0.45 | 250 | 45.0 | 250 | 4.5 | 12.5 | 52.0 | 4.10 | 5.0 | 4.5 | 240 | B7G | 27 | |
6AT6 | Double diode triode | 6.3 | 0.30 | 250 | 1.0 | - | - | 3.0 | 58.0 | 1.20 | | | | B7G | 19 | |
6BA6 | RF pentode | 6.3 | 0.30 | 250 | 11.0 | 100 | 4.2 | 1.0 | 1M | 4.4 | | | | B7G | 16 | |
6BE6 | Heptode frequency changer | 6.3 | 0.30 | 250 | 3.0 | 100 | 7.1 | 1.5 | 1M | 0.475⅄ | | | | B7G | 29 | |
6L6G | Output beam tetrode | 6.3 | 0.90 | 350 | 54.0 | 250 | 2.5 | 18.0 | 33.0 | 5.20 | 4.2 | 10.8 | 300 | IO | 36 | |
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| VM RF pentode | 6.3 | 0.15 | 250 | 8.5 | 100 | 1.7 | 3.0 | 750.0 | 1.75 | | | | B8G | 3 | |
7C5 | Output beam tetrode | 6.3 | 0.45 | 250 | 45.0 | 250 | 4.5 | 12.5 | 52.0 | 4.1 | 5.0 | 4.5 | 250 | B8G | 10 | |
| Double diode triode | 6.3 | 0.15 | 250 | 1.3 | - | - | 1.0 | 100.0 | 1.00 | | | | B8G | 2 | |
7H7 | VM RF pentode | 63 | 0.30 | 250 | 10.0 | 150 | 3.2 | 2.4 | 800.0 | 4.20 | | | | B8G | 13 | |
7S7 | Triode heptode frequency changer | 6.3 | 0.30 | h250 t100 | 1.8 | 100 | 3.0 | 2.0 | 1,25M | 0.525⅄ | | | | B8G | 8 | |
14S7 | Triode heptode frequency changer | 12.6 | 0.15 | h250 t100 | 1.8 | 100 | 3.0 5.0 | 2.0 | 1,25M | 0.525⅄ | | | | B8G | 8 | |
19X3 | See Mullard PY80 | | | | | | | | | | | | | - | - | |
| Line t/b beam tetrode | 18.0 | 4.50 | 180 | | 180 | | | | | | | 140 | IO | 38 | |
| Line t/b beam tetrode | 18.0 | 0.45 | 180 | | 180 | | | | | | | 140 | IO | 38 | |
Rectifiers | Type | Class | Cathode | Va | DC Ia | PIV | DC Vo | Base | Year | | | Type | Volts | Amps | Max RMS | mA | Volts | Volts | Type | Ref | Year |
Emitron |
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
| FW | IH | 6.3 | 0.60 | 325 | 70 | | | B7G | 31 | |
6W2 | EHT | IH | 6.3 | 90mA | | 0.5 | 25kV | | Wires | | |
7Y4 = U149 | FW | IH | 6.3 | 0.50 | 325 | 70 | | | B8G | 1 | |
17Z3 = PY81 | ED | IH | 17.0 | 0.30 | | 150 | 4,500 | | B9A+tc | 34 | |
19X3/PY80 | ED | IH | 19.0 | 0.30 | | 180 | 4,000 | | B9A | 18 | |
19Y3 | HW | IH | 19.0 | 0.30 | 250 | 180 | | | B9A | 18 | |
27SU | HW | IH | 13.2 | 0.90* | 250 | 250 | | | IO | 106 | |
| HW | IH | 35.0 | 0.15 | 250 | 100 | | | B8G | 16 | |
45IU | FW | IH | 4.0 | 3.5 | 500 | 250 | | | B4 | 14 | |
52KU | FW | IH | 5.0 | 2.00 | 500 | 150 | | | IO | 62 | |
53KU | FW | IH | 5.0 | 2.80 | 500 | 250 | | | IO | 62 | |
SU25 | EHT | IH | 2.0 | 0.50 | 5,000 | 1.0 | 100kV | | IO+tc | 102 | |
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SU45 | EHT | IH | 4.0 | 0.50 | 2,500 | 30 | 5,400 | | B7G+tc | 22 | |
SU2150A | EHT | IH | 2.0 | 1.50 | 5,000 | 10 | 10kV | | B4+tc | 17 | |
Voltage Stabilisers | Type | AV Stab | Striking | Current mA | Regulation | Base | | Volts | Voltage | Min | Max | Volts | Type | Ref |
Emitron |
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
S130 | 120 | 180 | 6 | 75 | 3 | B4 | 12 |
S130P | 120 | 135' | 5 | 75 | 7.5 | B4 | 12 |
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