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 | |
|
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless |
1A3 | RF diode | 1.4 | 0.15 | 120 | 0.5 | - | - | | | | | | | B7G | 13 | |
6C4 | RF power triode | 6.3 | 0.15 | 250 | 10.5 | - | - | 8.5 | 7.70 | 2.20 | | | | B7G | 15 | |
12AU7 | Double triode | 12.6 | 0.15 | 250 | 10.5 | - | - | 8.5 | 7.70 | 2.20 | | | | B9A | 1 | |
| See A15 below | | | | | | | | | | | | | B9 | | 1936 |
| All-Stage Valve: (FC) (RF amp) (Output) | 15.0 | 0.30 | 250 250 400 | 2.0 5.0 34.0 | 90 90 250 | 8.5 2.7 22.0 | 6.0 6.0 14.0 | | 0.48⅄ 1.20 | | - - 6.5 | | IO | 155 | 1937 |
AC/DD | Double diode | 4.0 | 1.00 | | | - | - | | | | | | | B5 B7 | 3 42 | 1934 |
AC/DDT | Double diode triode | 4.0 | 1.00 | 200 | 3.5 | - | - | 3.0 | 15.0 | 2.30 | | | | B7+tc | 7 | 1934 |
AC/HL | Medium-μ triode | 4.0 | 1.00 | 200 | 5.0 | - | - | 3.0 | 10.0 | 3.50 | | | | B5 | 1 | 1934 |
AC/HP | RF pentode | 4.0 | 1.00 | 200 | 3.0 | 100 | 1.0 | | 850.0 | 3.20 | | | | B5+tc B7+tc | 2 5 | 1934 |
AC/L | Output triode | 4.0 | 1.00 | 200 | 18.0 | - | - | 14.0 | 2.3 | 4.25 | 6.3 | 0.67 | | B5 | 1 | 1934 |
AC/Q | CD output tetrode | 4.0 | 1.35 | 375 | 57.0 | 250 | 2.5 | 22.0 | | | 4.0 | 11.5 | | B7 | 24 | 1937 |
AC/QA | CD output tetrode | 6.3 | 0.90 | 375 | 57.0 | 250 | 2.5 | 22.0 | 2.3 | | 4.0 | 11.5 | | IO | 36 | 1937 |
|
AC/SH | RF tetrode | 4.0 | 1.00 | 200 | 4.5 | 80 | 0.5 | | 800.0 | 3.50 | | | | B5+tc | 2 | 1934 |
AC/SL | RF tetrode | 4.0 | 1.00 | 200 | 2.4 | 80 | 0.3 | | 225.0 | 3.30 | | | | B5+tc | 2 | 1934 |
AC/TZ | Triode & CD output tetrode | 6.3 | | | | | | | | | | | | Ct8 | 45 | 1938 |
AC/VH | VM RF tetrode | 4.0 | 1.00 | 200 | 6.0 | 80 | 1.0 | 1.5 | 500.0 | 2.75 | | | | B5+tc | 2 | 1934 |
AC/VP | VM RF pentode | 4.0 | 1.00 | 200 | 6.0 | 100 | 2.0 | 1.5 | 1M | 3.00 | | | | B5+tc B7+tc | 2 5 | 1934 |
AC/VPb | VM RF pentode | 4.0 | 1.00 | 250 | 12.0 | 250 | 1.0 | 1.5 | 1M | 4.00 | | | | B7+tc | 6 | 1938 |
AC/VS | VM RF tetrode | 4.0 | 1.00 | 200 | 5.0 | 80 | 0.7 | 1.5 | 400.0 | 3.00 | | | | B5+tc | 2 | 1934 |
AC/Y (Harries) | Output pentode CD output tetrode | 4.0 | 1.00 | 250 250 | 32.0 32.0 | 250 250 | 5.5 4.3 | 17.5 10.0 | | 3.501 | 7.5 6.5 | 3.4 3.0 | | B5+tc B7 B7 | 7 24 24 | 1934 1934 1935 |
AC/YY (Harries) | CD output tetrode | 4.0 | 2.00 | 250 | 68.0 | 250 | 10.0 | 10.0 | | 7.501 | 2.0 | 5.0 | | B7 | 24 | 1936 |
AC/Z (Harries) | Output pentode CD output tetrode | 4.0 | 2.00 | 250 250 | 32.0 32.0 | 250 250 | 6.0 4.3 | 5.5 5.5 | | 8.001 | 6.5 6.5 | 3.2 3.0 | | B5+tc B7 B7 | 7 24 24 | 1934 1934 1935 |
AC/ZDD | Double diode & CD output tetrode | 4.0 | 2.00 | 250 | 32.0 | 250 | 4.3 | 5.5 | | 8.001 | 6.5 | 3.0 | | B7+tc | 9 | 1936 |
B220 | Class B double triode | 2.0* | 0.20 | 150 | 2.5 | - | - | 0 | | | 14.5 | 1.25 | | B7 | 10 | 1933 |
|
B230 | Class B double triode | 2.0* | 0.30 | 150 | 1.252 | - | - | 0 | | | 14.5 | 1.25 | | B7 | 10 | 1934 |
D210 | Detector triode | 2.0* | 0.10 | 150 | 2.4 | - | - | 4.5 | 12.0 | 1.35 | | | | B4 | 1 | 1933 |
| Detector triode | 2.0* | 0.10 | 140 | 2.4 | - | - | 4.5 | 12.0 | 1.35 | | | | B4+tc | 9 | 1936 |
DB240 | Driver triode & Class B double triode | 2.0* | 0.40 | B)150 D)150 | 1.252 3.0 | - | - | 0 4.5 | 12.5 | 1.25 | 14.5 | 1.25 | | B7 | 46 | 1934 |
DDT13 | Double diode triode | 13.0 | 0.30 | 200 | 5.0 | - | - | 4.0 | 15.0 | 2.30 | | | | B7+tc | 7 | 1936 |
| Double diode triode | 2.0* | 0.15 | 150 | | - | - | | 12.5 | 1.6 | | | | B5+tc | 5 | 1937 |
DDT220 | Double diode triode | 2.0* | 0.20 | 150 | 3.0 | - | - | 3.5 | 12.5 | 1.60 | | | | B5+tc | 5 | 1934 |
FY | CD output tetrode | 4.0* | 1.00 | 250 | 32.0 | 250 | 6.0 | 10.0 | | 5.00 | 6.0 | 3.0 | | B5 | 6 | 1936 |
H210 | Medium-μ triode | 2.0* | 0.10 | 150 | 1.0 | - | - | 3.0 | 22.0 | 1.15 | | | | B4 | 1 | 1933 |
HL13 | Medium-μ triode | 13.0 | 0.30 | 200 | 6.0 | - | - | 2.75 | 10.0 | 3.50 | | | | B7+tc | 23 | 1936 |
| RF pentode mixer | 2.0* | 0.15 | 150 | 3.0 | 70 | 0.6 | 0 | | 0.55⅄ | | | | B4+tc B7+tc | 2 4 | 1934 1934 |
J240 | RF pentode & double triode | 2.0* | 0.40 | | | | | | | | | | | B9 | 6 | 1935 |
|
L210 | AF low-μ triode | 2.0* | 0.10 | 150 | 4.0 | - | - | 6.0 | 8.6 | 1.20 | | | | B4 | 1 | 1933 |
P215 | Output triode | 2.0* | 0.15 | 150 | 8.0 | - | - | 12.0 | 3.6 | 2.20 | 10.0 | 0.15 | | B4 | 1 | 1935 |
| Output triode | 2.0* | 0.20 | 150 | 6.0 | - | - | 7.5 | 4.8 | 2.50 | 9.0 | 0.18 | | B4 | 1 | 1933 |
PP220 | Output triode | 2.0* | 0.20 | 150 | 12.5 | - | - | 12.0 | 2.3 | 3.02 | 5.0 | 0.25 | | B4 | 1 | 1933 |
PX5 | Output triode | 4.0* | 2.00 | 400 | 62.5 | - | - | 34.0 | 1.5 | 6.502 | 3.0 | 5.75 | | B4 | 1 | 1937 |
PX41 | Output triode | 4.0* | 1.00 | 250 | 48.0 | - | - | 40.0 | 830Ω | 6.002 | 3.5 | 2.5 | | B4 | 1 | 1936 |
PX230 | Output triode | 2.0* | 0.30 | 150 | 17.5 | - | - | 15.0 | 1.852 | 3.502 | 4.0 | 0.45 | | B4 | 1 | 1933 |
PX230SW | Output triode | 2.0* | 0.30 | 150 | 17.5 | - | - | 15.0 | 1.852 | 3.502 | 4.0 | 0.45 | | B4+tc | 9 | 1936 |
QP 240 | Double output pentode | 2.0* | 0.40 | 150 | 14.0 | 150 | 1.2 | 18.0 | | 2.301 | 14.5 | 1.4 | | B7 | 11 | 1934 |
SG210 | RF tetrode | 2.0* | 0.10 | 150 | 2.0 | 80 | 1.25 | | 250.0 | 1.00 | | | | B4+tc | 2 | 1933 |
SG215 | RF tetrode | 2.0* | 0.15 | 150 | 2.0 | 70 | 0.75 | | 250.0 | 1.10 | | | | B4+c | 2 | 1934 |
SG220 | RF tetrode | 2.0* | 0.20 | 150 | 2.25 | 70 | 0.6 | | 333.0 | 1.50 | | | | B4+tc | 2 | 1934 |
|
| RF tetrode | 2.0* | 0.20 | 150 | 2.4 | 70 | 0.9 | 1.5 | 330.0 | 1.50 | | | | B4+tc | 3 | 1936 |
TP230 | Triode pentode frequency changer | 2.0* | 0.30 | p120 t120 | 1.1 0.75 | 60 - | 0.35 - | 0 | | 0.32⅄ | | | | B9+tc | 1 | 1935 |
VP13 | VM RF pentode | 13.0 | 0.30 | 200 | 6.3 | 100 | 2.0 | 1.5 | | 3.00 | | | | B7+tc | 5 | 1936 |
VP215 | VM RF pentode | 2.0* | 0.15 | 150 | 2.9 | 75 | 0.7 | 0 | 400.0 | 1.25 | | | | B4+tc B7+tc | 2 4 | 1934 1934 |
VP215b | VM RF pentode | 2.0* | 0.15 | 120 | 3.25 | 120 | 0.95 | 0 | 1M | 1.20 | | | | B7+tc | 13 | 1938 |
VP215c | VM RF pentode | 2.0* | 0.15 | 120 | 3.25 | 120 | 0.95 | 0 | 1M | 1.20 | | | | B7+tc | 4 | 1938 |
VS210 | VM RF tetrode | 2.0* | 0.20 | 150 | 6.0 | 75 | 1.5 | 0 | 110.0 | 1.00 | | | | B4+tc | 2 | 1933 |
VS 215 | VM RF tetrode | 2.0* | 0.15 | 150 | 6.0 | 75 | 1.5 | 0 | 110.0 | 1.00 | | | | B4+tc | 2 | 1934 |
| Detector triode | 2.0* | 0.066 | 75 | 0.5 | - | - | 1.5 | 23.0 | 0.75 | | | | Sm4 | 1 | 1935 |
| Triode | 1.5* | 0.08 | 50 | 0.45 | - | - | 0 | 50.0 | 0.50 | | | | Sm4 | 1 | |
XD2.0V | Triode | 2.0* | 0.08 | 50 | 0.65 | - | - | 0 | 38.0 | 0.56 | | | | Sm4 | 1 | |
XFR1 | RF pentode | 1.2* | 0.10 | 45 | 3.0 | 45 | 0.9 | 0 | | 2.00 | | | | B5A | 2 | |
|
XFR2 | RF pentode | 1.35* | 0.05 | 67.5 | 1.8 | 67.5 | 0.05 | 0 | | 1.10 | | | | B5A | 2 | |
| RF triode | 1.25* | 0.12 | 135 | 4.0 | | | 5.0 | | 1.65 | | | | B5A | 5 | |
XFR5 | RF pentode | 1.25* | 20mA | 67.5 | 1.8 | 67.5 | 0.5 | 0 | | 1.10 | | | | B5A | 2 | |
| AF tetrode | 0.675* | 25mA | 22.5 | | 22.5 | | | 1.2M | | | | | B5A | 1 | |
XFW20 | AF pentode | 0.625* | 12,5mA | 22.5 | | 22.5 | | 0 | | | | | | B5A+tc | 2 | |
XFW30 | Beam tetrode | 0.625* | 12.5mA | 22.5 | | 22.5 | | 0 | | | | | | B5A | 1 | |
XFW40 | Beam tetrode | 0.625* | 10mA | 22.5 | | 22.5 | | 0 | | | | | | B5A | 1 | |
XFW50 | Beam tetrode | 0.625* | 7.5mA | 22.5 | | 22.5 | | 0 | | | | | | B5A | 1 | |
| Output pentode | 1.25* | 25mA | 22.5 | 0.5 | 22.5 | 0.2 | 1.25 | | 0.35 | 50.0 | 3mW | | B5A | 1 | |
XFY11 | Output pentode | 1.25* | 25mA | 22.5 | 0.3 | 22.5 | 0.09 | 0 | | 0.42 | 200.0 | 1.2mW | | B5A | 1 | |
XFY12 | Output pentode | 1.25* | 25mA | 22.5 | 0.25 | 22.5 | 0.08 | 0.5 | | 0.37 | 175.0 | 1.75mW | | B5A | 1 | |
XFY14 = 5672 | AF power pentode | 1.25* | 50mA | 67.5 | 3.1 | 67.5 | 0.95 | 6.5 | | 0.65 | 22.0 | 70mW | | B5A | 1 | |
|
XFY15 | AF power pentode | 1.25* | 20mA | 67.5 | 3.1 | 67.5 | 0.95 | 6.5 | | 0.65 | | 70mW | | B5A | 1 | |
| Output beam tetrode | 1.25* | 12.5mA | | | | | 0 | | 0.38 | 100.0 | 3.3mW | | B5A | 1 | |
XFY22 | Output beam tetrode | 1.25* | 12.5mA | 22.5 | 0.3 | 22.5 | 0.075 | 1.2 | | 0.36 | 100.0 | 2.3mW | | B5A | 1 | |
XFY23 | Output beam tetrode | 1.25* | 17.5mA | 22.5 | 0.4 | 22.5 | 0.09 | 2.0 | | 0.34 | 50.0 | 3.75mW | | B5A | 1 | |
XFY31 | Output beam tetrode | 1.25* | 12.5mA | 22.5 | 0.38 | 22.5 | 0.095 | 0 | | 0.41 | 100.0 | 1.8mW | | B5A | 1 | |
XFY32 | Output beam tetrode | 1.25* | 12.5mA | 16.25 | 0.44 | 16.25 | 0.1 | 0 | | 0.35 | 100.0 | 1.8mW | | B5A | 1 | |
XFY33 | Output beam tetrode | 1.25* | 17.5mA | 15 | 0.2 | 15 | 0.05 | 1.2 | | 0.23 | 75.0 | 1mW | | B5A | 1 | |
XFY34 | Output beam tetrode | 1.25* | 14mA | 45 | 1.5 | 45 | 0.36 | 4.0 | | 0.60 | 25.0 | 30mW | | B5A | 1 | |
XFY35 | Output beam tetrode | 1.55* | 25mA | 45 | 0.75 | 45 | 0.22 | 1.5 | | 0.57 | 60.0 | 11.5mW | | B5A | 1 | |
XFY41 | Output beam tetrode | 1.55* | 10mA | 22.5 | 0.38 | 22.5 | 0.095 | 0 | | 0.41 | 100.0 | 1.8mw | | B5A | 1 | |
XFY43 | Output beam tetrode | 1.55* | 10mA | 15 | 0.2 | 15 | 0.05 | 1.2 | | 0.23 | 75.0 | 1mW | | B5A | 1 | |
XFY51 | Output beam tetrode | 1.25* | 10mA | 22.5 | 0.32 | 22.5 | 0.09 | 0 | | 0.32 | 80.0 | 2.3mW | | B5A | 1 | |
|
XFY53 | Output beam tetrode | 1.25* | 10mA | 22.5 | 0.45 | 22.5 | 0.17 | 3.0 | | 0.34 | 40.0 | 3.75mW | | B5A | 1 | |
XFY54 | Output beam tetrode | 1.25* | 10mA | 22.5 | 0.34 | 22.5 | 0.08 | 2.0 | | 0.28 | 30.0 | 2.75mW | | B5A | 1 | |
XHH | Double triode | 2.0* | | | | - | - | | | | | | | Sm4+st | 3 | |
| AF or detector triode | 1.5* | 0.08 | 50 | 0.45 | - | - | 0 | 50.0 | 0.50 | | | | Sm4 | 1 | |
XH2.0V | Triode | 2.0* | 0.08 | 50 | 0.45 | - | - | 0 | 50.0 | 0.56 | | | | Sm4 | 1 | |
XHP1.5V | Double power triode | 1.5* | 0.16 | 50 | 1.75 | - | - | 4.5 | 7.25 | 0.72 | 8.5 | 6.2mW | | Sm5+tc | 3 | |
XL | Low-μ AF triode | 2.0* | 0.066 | 75 | 2.0 | - | - | 1.5 | 14.0 | 0.85 | | | | Sm4 | 1 | 1935 |
XL1.5V | AF or output triode | 1.5* | 0.08 | 50 | 0.7 | - | - | 1.0 | 20.0 | 0.60 | | | | Sm4 | 1 | |
XL2.0V | AF or output triode | 2.0* | 0.08 | 50 | 1. | - | - | 1.0 | 12.5 | 0.84 | | | | Sm4 | 1 | |
XLO1.5V | Triode | 1.5* | 0.08 | 50 | 0.90 | - | - | 1.0 | 20.0 | 0.65 | | | | Sm4 | 1 | |
XLO2.0V | Triode | 2.0* | 0.08 | 50 | 1.1 | - | - | 1.0 | 12.5 | 0.92 | | | | Sm4 | 1 | |
XP | Output triode | 2.0* | 0.066 | 75 | 4.0 | - | - | 4.5 | 5.0 | 1.00 | 10.0 | | | Sm4 | 1 | 1935 |
|
| Output triode | 1.5* | 0.08 | 50 | 1.75 | - | - | 4.5 | 7.25 | 0.72 | | | | Sm4 | 1 | |
XP2.0V | Output triode | 2.0* | 0.08 | 50 | 2.0 | - | - | 3.0 | 6.0 | 1.0 | | | | Sm4 | 1 | |
XR6 | RF pentode | 6.3 | 0.15 | 100 | 7.0 | 100 | 2.2 | 1.4 | 300.0 | 0.30 | | | | B8D | 4 | |
XR7 | RF pentode | 6.3 | 0.20 | 100 | 7.5 | 100 | 2.5 | 2.0 | 250.0 | 5.5 | | | | B8D | 5 | |
XR8 | Triode | 6.3 | 0.15 | 100 | 8.0 | - | - | 2.5 | 4.75 | 4.20 | | | | B8D | 8 | |
| RF tetrode | 2.0* | 0.066 | 120 | 1.75 | 60 | 0.2 | | 600.0 | 0.60 | | | | Sm4+tc | 2 | 1935 1935 |
| RF tetrode | 1.5* | 0.08 | 50 | 0.55 | 30 | 0.25 | 0 | 666.0 | 0.30 | | | | Sm4+tc | 2 | |
| RF tetrode | 2.0* | 0.08 | 50 | 0.6 | 30 | 0.30 | 0 | 500.0 | 0.40 | | | | Sm4+tc | 2 | |
XV | Variable-μ RF tetrode | 2.0* | 0.08 | 50 | 0.4 | 30 | 0.4 | 0 | 1.5M | 0.33 | | | | SM4+tc | 2 | PW |
XVS2.0V | Variable-μ RF tetrode | 2.0* | 0.08 | 50 | 0.4 | 30 | 0.15 | 0 | 1.5M | 0.33 | | | | Sm4+tc | 2 | |
XW | AF pentode | 2.0* | 0.08 | 50 | 0.95 | 45 | 0.3 | 0 | 1M | 0.60 | | | | B5A | 1 | PW |
XW0.75A | AF pentode | 0.75* | 0.033 | 30 | 0.45 | 30 | - | 0 | 1.5M | 0.20 | | | | B5A | 1 | |
|
XW0.75B | AF pentode | 0.675* | 0.025 | 30 | | 30 | | 0 | 1M | 0.18 | | | | B5A | 1 | |
XW1.5V | RF pentode | 1.5* | 0.08 | 50 | 0.75 | 45 | 0.2 | 0 | 1M | 0.52 | | | | SM5+tc | 2 | |
| RF pentode | 2.0* | 0.08 | 50 | 0.95 | 45 | 0.30 | 0 | 1M | 0.60 | | | | Sm5+tc | 2 | |
| Output pentode | 2.0* | 0.14 | 100 | 5.3 | 100 | | 9.0 | | 1.25 | 15.0 | | | Sm5 | 1 | 1935 |
XY1.4A | Output pentode | 1.4* | 0.032 | 45 | 1.75 | 45 | 0.75 | 54.5 | 40.0 | 0.55 | 30.0 | 0.10 | | B5A | 1 | |
XY1.4B | Output pentode | 1.25* | 0.025 | 45 | 1.5 | 45 | 0.45 | 4.5 | 50.0 | 0.69 | 30.0 | 0.0275 | | B5A | 1 | |
XY1.4C | Output pentode | 1.25* | 0.025 | 45 | 0.5 | 45 | 0.1 | 1.5 | 250.0 | 0.50 | 100.0 | 0.0065 | | B5A | 1 | |
XY1.5V | Output pentode | 1.5* | 0.16 | 45 | 1.75 | 45 | 0.35 | 1.5 | 60.0 | 1.0 | | | | Sm5 | 1 | |
XY2.0V | Output pentode | 2.0* | 0.16 | 50 | 1.75 | 50 | 0.40 | 2.0 | 60.0 | 1.4 | | | | Sm5 | 1 | |
Y13 (Harries) | CD output tetrode | 13.0 | 0.30 | 250 | 35.0 | 250 | 4.5 | 22.0 | | | 4.0 | 3.0 | | B7 | 24 | 1936 |
Y220 (Harries) | Output pentode CD output tetrode | 2.0* | 0.20 | 150 150 | 11.5 10.5 | 150 150 | 2.0 1.3 | 6.0 4.5 | | 2.501 | 12.0 11.5 | 0.5 0.5 | | B4+tc B5 B5 | 7 6 6 | 1933 1935 |
Y230 (Harries) | CD output tetrode | 2.0* | 0.30 | 150 | 7.0 | 150 | 1.0 | 3.0 | | | 20.0 | 0.4 | | B5 | 6 | 1938 |
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Z26 (Harries) | CD output tetrode | 26.0 | 0.30 | 250 | 32.0 | 250 | 4.3 | 5.5 | | 8.001 | 6.5 | 3.0 | | B7 | 24 | 1936 |
Z220 (Harries) | Output pentode CD output tetrode | 2.0* | 0.20 | 150 150 | 18.0 18.0 | 150 150 | 4.0 2.1 | 9.0 6.0 | | 2.503 | 7.6 7.5 | 0.75 1.0 | | B4+tc B5 B5 | 7 5 6 | 1933 1935 |