Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20 | Output Triode | | | ![](../static/nopdf.jpg)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
200-0069 | Thyratron (Mercury Vapour) | | | ![](../static/nopdf.jpg)
| BT19 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
2000 | | | | ![](../static/nopdf.jpg)
| 18049 68506 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20026 | Triode | | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
201-A | Triode | | | ![](../static/nopdf.jpg)
| |
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
204A | | | | ![](../static/nopdf.jpg)
| ES204A |
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
206D(While Line) | Detector Triode | 1926 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
206H(Red Line) | RF Triode | 1926 | | ![](../static/nopdf.jpg)
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
206L(Green Line) | AF Triode | 1926 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
206RC(Blue Line) | RCC Triode | 1926 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
207 | | | | ![](../static/nopdf.jpg)
| ESW207 |
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20CG | Photocell | 1949 | | ![](../static/pdflogo.gif)
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20CV | Photocell | 1949 | B8B | ![](../static/pdflogo.gif)
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20D1 | Double Diode | 1949 | B7G | ![](../static/pdflogo.gif)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20D3 | Diode Heptode | | | ![](../static/nopdf.jpg)
| 12AH8 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20D4 | Triode Heptode | | | ![](../static/nopdf.jpg)
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
20PE20 | Camera Tube | | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
21 | Triode | | | ![](../static/nopdf.jpg)
| CV620 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
2101 | Output Pentode | 1940 | | ![](../static/nopdf.jpg)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
2103 | Double Output Pentode | 1935 | UX7 | ![](../static/nopdf.jpg)
| |
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
210DG | Bi-Grid | 1931 | | ![](../static/nopdf.jpg)
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
211A | Triode | | | ![](../static/nopdf.jpg)
| 4242A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
212E | Triode | | | ![](../static/nopdf.jpg)
| 4212E |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
2151 | Output Pentode | 1940 | UX6 | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
215D(While Line) | Detector Triode | 1926 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
215H(Red Line) | RF Triode | 1926 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
215L(Green Line) | AF Triode | 1926 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
215A | Triode | 1919 | | ![](../static/nopdf.jpg)
| 38015 4215A CW-1344 CW-38015 CW1344 R215A VT-5 WE215A Wecovalve |
|
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|
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
21A1 | Thyratron (Hydrogen)+B370 | | | ![](../static/nopdf.jpg)
| 4G/320D 6574 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
21LU8 | Triode Beam Tetrode | 1970 | B12C | ![](../static/pdflogo.gif)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
21VO6 | Pentode | | | ![](../static/nopdf.jpg)
| EL822 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
22 | RF Tetrode | 1936 | | ![](../static/nopdf.jpg)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
220DD | Double Diode | 1934 | B5 | ![](../static/pdflogo.gif)
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
220R | Triode | | | ![](../static/nopdf.jpg)
| AR14 CV1312 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
220TH | Triode Heptode | 1938 | | ![](../static/nopdf.jpg)
| CV1082 TH2 X24 |
|
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
222B | Rectifier HW | | | ![](../static/nopdf.jpg)
| 4222B |
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
227 | Triode | 1927 | | ![](../static/nopdf.jpg)
| 27 DE-1 ER227 G-27 MY227 NY227 SY227 UY227 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
227A | Triode | 1944 | | ![](../static/nopdf.jpg)
| 3-100E3 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
228A | Triode | | | ![](../static/nopdf.jpg)
| 4228A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
22M1 | Glow Modulator | 1946 | | ![](../static/nopdf.jpg)
| 1B59 |
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|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
238B | Ignitron | | | ![](../static/nopdf.jpg)
| BK46/5555 |
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|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
23Z9 | Double Triode Pentode | 1967 | B12C | ![](../static/pdflogo.gif)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24 | Pentode | | | ![](../static/pdflogo.gif)
| 324 CV936 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
240B | Double Triode (Class B) | 1933 | B7 | ![](../static/pdflogo.gif)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
242A | Triode | | | ![](../static/nopdf.jpg)
| 4242A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
242C | Triode | | | ![](../static/nopdf.jpg)
| 211 4242A CV25 ES85 UE311 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
245 | Output Triode | 1929 | | ![](../static/pdflogo.gif)
| 345 45 CV610 UX245 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24A/24E | Pentode | | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24B1 | Trigatron | | | ![](../static/nopdf.jpg)
| CV6008 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24B9 | Trigatron | 1971 | | ![](../static/pdflogo.gif)
| CV6008 CV6173 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24A | RF Tetrode | 1938 | | ![](../static/nopdf.jpg)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24E | RF Tetrode | 1938 | | ![](../static/nopdf.jpg)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
24S | RF Tetrode | 1936 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
250TH | Triode | | | ![](../static/nopdf.jpg)
| CV2589 |
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
253 | Triode | | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25A6 | Pentode | 1936 | | ![](../static/nopdf.jpg)
| CV549 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25A6G | Output Pentode | 1936 | IO | ![](../static/pdflogo.gif)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25A6GT | Output Pentode | 1940 | | ![](../static/nopdf.jpg)
| CV550 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25A7GT | Output Pentode Rectifier HW | 1940 | | ![](../static/nopdf.jpg)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25B5 | Double Trode | 1940 | UX6 | ![](../static/pdflogo.gif)
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25B8GT | Triode RF Pentode | 1940 | | ![](../static/nopdf.jpg)
| |
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25L6 | Output Pentode | 1937 | IO | ![](../static/pdflogo.gif)
| CV552 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25L6G | Output Pentode | 1937 | | ![](../static/nopdf.jpg)
| CV551 CV1287 KT32 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25L6GT | Output Pentode | 1937 | IO | ![](../static/pdflogo.gif)
| CV553 KT32 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25N6G | Double Triode | 1940 | | ![](../static/nopdf.jpg)
| |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25SN7GT | Double Triode | | | ![](../static/nopdf.jpg)
| CV423 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25T | Triode | 1945 | | ![](../static/nopdf.jpg)
| 3C24 CV941 HK24 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
25U4GT | Rectifier HW | | | ![](../static/nopdf.jpg)
| |
|
|
|
|
|
|
|
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
260A | Pentode | | | ![](../static/nopdf.jpg)
| 4260A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
26A7GT | Double Tetrode | | | ![](../static/nopdf.jpg)
| CV3577 |
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
270A | Triode | | | ![](../static/nopdf.jpg)
| 4270A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
272 | Rectifier MV | | | ![](../static/nopdf.jpg)
| 5557 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
279A | | | | ![](../static/nopdf.jpg)
| 4279A CV669 |
|
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
27S | Triode | 1936 | | ![](../static/nopdf.jpg)
| |
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
282A | Pentode | | | ![](../static/nopdf.jpg)
| 4282A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
28AK8 | Triple Diode Triode | | | ![](../static/nopdf.jpg)
| UABC80 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
28D7 | Double Beam Tetrode | 1943 | B8B | ![](../static/pdflogo.gif)
| CV945 CV946 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
29D15 | Ionisation Sensor | | | ![](../static/nopdf.jpg)
| |
|