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| electron Tube Data sheets |
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| USA industrial power tubes collected by Adri de Keijzer † |
| 327A | Triode, W. production of Eimac-developed 327A. Used in Navy SC radar. | 2017-11-22 06:58:30 | 74223 bytes |
| 327A_Parts | Components and finished tube. | 2017-11-22 07:03:10 | 95634 bytes |
| 6C21_No1 | Triode, "Fairmont, West Virginia, 6-23-1944." Note composition base, conical anode mounting, and (fragile looking) grid connection. Tube used as modulator in SCR-584 radar. | 2017-11-22 06:58:30 | 52508 bytes |
| 6C21_No2 | Has angled grid support and metal (?) base, closer to usual Eimac construction than No. 1. | 2017-11-22 06:58:30 | 74982 bytes |
| 865 | Tetrode, early version in "S" bulb. | 2017-11-22 07:03:12 | 48064 bytes |
| 891R | RCA-branded. May actually be an 892R: the two are identical visually. | 2017-11-22 07:03:12 | 52904 bytes |
| AT30 | Early triode. ".W. Radiotron." | 2017-11-22 07:03:12 | 41289 bytes |
| AW220 | Triode, cut-away display. Has "correct" fluted anode. Dia. 6-1/2", height ca. 68" Seems to have wa-ter-cooled grid seal at bottom. | 2017-11-22 07:03:12 | 35869 bytes |
| DKI668 | Three-phase mercury-arc rectifier. "Made by D. D. Knowles @ East Pitts Research Lab to provide High Voltage (22 kV DC) at high current up to 50 amps from 3 tubes (12 anodes) for new Test Set at RCA, Harrison, N. J. This was for early work on what later became "Super-Power Tubes" by RCA. At the time, 1936, GE, .W. and RCA were still legally coordinating the design and manufac-turing of "Power Tubes." W. G. Moran , 26 March 1968 (Notation on back.) | 2017-11-22 07:03:12 | 66958 bytes |
| GL814 | GE photo 5718112, dated 7-19-1939. Tube has glazed ceramic base. | 2017-11-22 07:03:10 | 43418 bytes |
| Raytheon | Prewar power tetrode, appears to be RK-20A , RK-28, RK-46, RK-47, or RK-48. | 2017-11-22 07:03:12 | 41649 bytes |
| UV203A | Triode, RCA-branded. | 2017-11-22 07:03:12 | 52273 bytes |
| UV206 | Appears to be a GE photo, dated 3-6-1930. From blueline print. | 2017-11-22 07:03:14 | 61032 bytes |
| UV207 | RCA-branded. Has clamp-on connecting strap for grid. | 2017-11-22 07:03:14 | 46355 bytes |
| UV211 | From blueline print. Print has '211" penciled on base. Tipped bulb. | 2017-11-22 07:03:14 | 57600 bytes |
| UV214 | Less cooler. | 2017-11-22 06:58:30 | 32441 bytes |
| UV217C | RCA "Rectron" | 2017-11-22 07:03:14 | 48017 bytes |
| UV849 | Appears to be GE photo. "Before 2-10-31." | 2017-11-22 07:03:14 | 41294 bytes |
| UV850 | Print is marked "RCA 850," so this is a UV-850. | 2017-11-22 07:03:12 | 33489 bytes |
| UV853 | Dated "9-24-1929" | 2017-11-22 07:03:14 | 42345 bytes |
| UV854_LessCooler | Less integral water jacket and attached grid strap. 9-24-1929. Has flange for external water jacket. | 2017-11-22 07:03:14 | 46287 bytes |
| UV854_WithCooler | Has integral water jacket. Also 9-24-29 Has integral cooler. | 2017-11-22 07:03:14 | 46591 bytes |
| UV855 | Rectifier, 9-24-1929. | 2017-11-22 07:03:14 | 33581 bytes |
| UV862_TipDown | GE photo 469657, dated 2-7-1929. Seal-off tip points down. Connecting strap clamped to grid stud. | 2017-11-22 07:03:16 | 27153 bytes |
| UV862_TipUp | GE photo 459986, undated. Early vintage; seal-off tip points up. Connection strap brazed to grid stud. Tube "has some hours on it," judging from scale on anode. | 2017-12-08 22:07:32 | 41747 bytes |
| UV865 | Tetrode, early version in "S" bulb. | 2017-11-22 07:03:16 | 53105 bytes |
| UV872 | Early version. "5-15-1931." | 2017-11-22 07:03:16 | 80524 bytes |
| Unidentified1 | Power triode, 207-style, with "lava": beads on fil. leads, no top cap, grid pin through side arm, inte-gral water-cooler with domed bottom and jarge pipe threads. | 2017-11-22 07:03:12 | 64045 bytes |
| Unidentified2 | Power triode, 207-style, with "lava" beads on fil. leads, cap on top, detachable connecting strap on grid post. New tube - no discoloration on anode from use. | 2017-11-22 06:58:30 | 31822 bytes |
| Unidentified3 | Power triode, 207-style , with plain fil. leads, no top cap, grid pin through side arm. | 2017-12-08 22:32:58 | 43830 bytes |
| Unidentified4 | Power triode, like Unident 3 but with plain fil. leads, integral cooler with large pipe threads, flat bot-tom, and mounting strap. | 2017-11-22 07:03:12 | 38000 bytes |
| Unidentified5 | Power triode, 207-style, with "lava" beads on fil. leads, no top cap, grid pin through side arm, inte-gral water-cooler with domed bottom and small pipe threads. | 2017-11-22 07:03:12 | 34568 bytes |
| Unidentified6 | Postwar external-anode power triode, cut open, probably a WL-473. | 2017-11-22 07:03:12 | 64983 bytes |
| Unidentified7 | Power triode, may be a different version of Unident. 1. | 2017-11-22 07:03:12 | 56063 bytes |
| Unidentified8 | Power triode, 207-style, with "lava" beads on fil. leads, no top cap, grid pin through side arm. | 2017-11-22 06:58:30 | 43048 bytes |
| VT127A | W. production of VT-127A radar triode, developed by Eimac for SCR-268 radar. | 2017-11-22 07:03:16 | 95063 bytes |
| WC61_RW100 | (Photo is identified this way.) Rectifier. Has water jacket with domed bottom. | 2017-11-22 07:03:16 | 61824 bytes |
| WL196 | RF-heating triode. | 2017-11-22 07:03:16 | 48632 bytes |
| WL204A | Dated "7-3-1934" | 2017-11-22 07:03:16 | 30616 bytes |
| WL305 | XRay - (1945) | 2017-11-24 22:50:30 | 213277 bytes |
| WL311 | XRay - (includes WL-312) (1949) | 2017-11-24 22:52:22 | 133739 bytes |
| WL327 | XRay - (includes WL-341 and WL-342) (1947) | 2017-11-24 22:53:28 | 527398 bytes |
| WL332 | ZRau - (1945) | 2017-11-24 22:54:24 | 216029 bytes |
| WL340 | XRay - (includes WL-381, WL-390, and WL-395) (1948) | 2017-11-24 22:55:32 | 222304 bytes |
| WL349 | XRay - (includes WL-384) (1949) | 2017-11-24 22:56:24 | 258091 bytes |
| WL355 | XRay - (includes WL-355, WL-374, WL-375, and WL-377) (1947) | 2017-11-24 22:57:32 | 594953 bytes |
| WL387 | XRay - (1945) | 2017-11-24 22:58:32 | 214439 bytes |
| WL388 | XRay - (1945) | 2017-11-24 23:00:46 | 244216 bytes |
| WL389 | XRay | 2017-11-24 23:02:30 | 188635 bytes |
| WL391 | XRay - (1945) | 2017-11-24 23:03:26 | 224190 bytes |
| WL392 | XRay - (1945) | 2017-11-24 23:52:56 | 241609 bytes |
| WL393 | XRay - (1947) | 2017-11-24 23:05:10 | 232243 bytes |
| WL455_No1 | RF-heating triode. | 2017-11-22 07:03:16 | 39146 bytes |
| WL455_No2 | Second (better) view | 2017-11-22 07:03:10 | 43831 bytes |
| WL460 | RF-heating triode | 2017-11-22 07:03:10 | 44494 bytes |
| WL461_Oscillator | RF-heating generator using WL-461s. This image used in WL-461 promo brochure. | 2017-11-22 07:05:02 | 48662 bytes |
| WL461_Tipless | VHF RF-heating triode | 2017-11-22 07:05:02 | 45779 bytes |
| WL461_Tipped | VHF RF-reating triode | 2017-11-22 07:05:02 | 51092 bytes |
| WL473 | Postwar RF-heating triode, related to 5736 (shorter radiator, same ratings.) | 2017-11-22 07:05:02 | 55086 bytes |
| WL478 | Coaxial VHF power tube, glass bulb, metal-and-disc base, forced-air-cooled. | 2017-11-22 07:05:02 | 60054 bytes |
| WL530 | Power triode, apparently unique to SCR-270 and SCR-271 205-MHz search radars. | 2017-11-22 07:05:02 | 63666 bytes |
| WL530s | Triodes on parade. | 2017-11-22 07:05:02 | 83702 bytes |
| WL5519 | XRay - (includes WL-5520 through WL-5523) (1948) | 2017-11-24 23:06:06 | 556419 bytes |
| WL5519_Head | XRay - Head (for WL-5519 through WL-5523, with integral oil pump) (1948) | 2017-11-24 23:07:02 | 238085 bytes |
| WL5532 | XRay - (includes WL-5533 through WL-5540) (1947) | 2017-11-24 23:59:24 | 1176291 bytes |
| WL5599 | XRay - (includes WL-5600 through WL-5602) (1949) | 2017-11-24 23:11:20 | 630762 bytes |
| WL5745 | XRay - includes WL-5746 (1948) | 2017-11-24 23:12:00 | 240234 bytes |
| WL621 | Has white glass at plate end of bulb. .W. branded. | 2017-11-22 07:05:04 | 32198 bytes |
| WL627 | Thyratron, displayed in elongated glass tube like stretched version of glass housing of old-time stock ticker. Not the KU-627 thyratron, which is much smaller, on "industrial" base. Ca. 6" dia. x 14" high. | 2017-11-22 07:05:04 | 84275 bytes |
| WL671 | Glass ignitron, photographed in improvised light-diffusing box. | 2017-11-22 07:05:04 | 66677 bytes |
| WL706 | Voltage regulator for locomotive headlights, neon, 109 volts. | 2017-11-22 07:05:04 | 36249 bytes |
| WL715 | "Neon potential indicator tube," "2-17-1930." | 2017-11-22 07:05:04 | 33904 bytes |
| WL803 | Dated 8-15-1944. Heavy gettering around anode. Has locating pin. | 2017-11-22 07:05:04 | 67856 bytes |
| WL803_Dual | 2017-11-22 07:05:04 | 63133 bytes | |
| WL837_Dual | Two tubes. Ceramic base has, unaccountably, a locating pin. | 2017-11-22 07:05:04 | 86024 bytes |
| WL838_Dual | Two tubes. | 2017-11-22 07:05:04 | 55216 bytes |
| WL845_Dual | Dual view. Tubes are visually indistinguishable from 838. | 2017-11-22 07:05:04 | 48989 bytes |
| WL849 | Triode. Dated 8-31-1934 | 2017-11-22 07:05:04 | 45080 bytes |
| WL851_Orig | Triode. | 2017-11-22 07:05:04 | 43475 bytes |
| WL851_Parts | Triode, less bulb. | 2017-11-22 07:05:04 | 91844 bytes |
| WL852 | Triode, ungettered (another image shows a coating of getter inside the plate arm) | 2017-11-22 07:05:06 | 48746 bytes |
| WL860 | Dated 2-17-1936 | 2017-11-22 07:05:06 | 53676 bytes |
| WL860_No2 | Second view. | 2017-11-22 07:05:06 | 54725 bytes |
| WL861-1 | Dated 8-23-1944, plain plate, black cap | 2017-11-22 07:05:06 | 59083 bytes |
| WL861-3 | Dated 2-16-1936. Plain anode, white cap. | 2017-11-22 07:05:06 | 53954 bytes |
| WT25 | Glass power triode, with domed cap, on pins-and-blade base. Base stamped "TRIPEWT25." | 2017-11-22 07:05:02 | 56885 bytes |