| Electron tube Type | Brand | System | Data sheet | 
    | 8532 | RMA/EIA | t | 8532.pdf (481768 bytes) | 
    | 8533 (= ML8533) | Machlett Laboratories | T~ | 8533.pdf (331071 bytes) | 
    | 8533 | Eimac | T~ | 8533.pdf (964076 bytes) | 
    | 8534 (= ML8534) | Machlett Laboratories | T~ | 8534.pdf (978822 bytes) | 
    | 8535 (= ML8535) | Machlett Laboratories | T~ | 8534.pdf (978822 bytes) | 
    | 8536 (= ML8536) | Machlett Laboratories | T~ | 8536.pdf (971968 bytes) | 
    | 8537 (= ML8537) | Machlett Laboratories | T~ | 8536.pdf (971968 bytes) | 
    | 8538 (= ML8538) | Machlett Laboratories | T~ | 8538.pdf (367862 bytes) | 
    | 8539 (= ML8539) | Machlett Laboratories | T~ | 8538.pdf (367862 bytes) | 
    | 8541 | RCA (HB3) | VIC | 8541.pdf (610767 bytes) | 
    | 8541 | RMA/EIA | VIC | 8604.pdf (361661 bytes) | 
    | 8541A | RCA (HB3) | VIC | 8541.pdf (610767 bytes) | 
    | 8543 | RMA/EIA | MAG | 8543.pdf (192151 bytes) | 
    | 8547 (= ML8547) | Machlett Laboratories | T~ | 8547.pdf (526307 bytes) | 
    | 8548 (= ML8548) | Machlett Laboratories | T~ | 8548.pdf (417114 bytes) | 
    | 8549 (= ML8549) | Machlett Laboratories | T~ | 8549.pdf (479380 bytes) | 
    | 8552  (= 6883B) | RCA (HB3) | P~ | 6883B.pdf (81817 bytes) | 
    | 8552 | RMA/EIA | P~ | 6883B.pdf (1044428 bytes) | 
    | 8553 | ITT | THY | 8553.pdf (155026 bytes) | 
    | 8556 (= EC8010)     | Telefunken | t | EC8010.pdf (191340 bytes) | 
    | 8560A | Eimac | Q~ | 8560A.pdf (1403809 bytes) | 
    | 8560AS | Svetlana | Q~ | 8560AS.pdf (95821 bytes) | 
    | 8561 | RMA/EIA | Q~ | 8561.pdf (892507 bytes) | 
    | 8566 | RMA/EIA | VIC | 8566.pdf (456774 bytes) | 
    | 8567 | RCA (HB3) | VIC | 8567.pdf (276454 bytes) | 
    | 8568 | RCA (HB3) | KLY | 8568.pdf (310554 bytes) | 
    | 8569 | Tung-Sol | ti | 8569.pdf (194859 bytes) | 
    | 8571 | RCA (HB3) | PMT | 8571.pdf (411082 bytes) | 
    | 8572 | RCA (HB3) | VIC | 8572.pdf (399995 bytes) | 
    | 8572 | RMA/EIA | VIC | 8604.pdf (361661 bytes) | 
    | 8572 | RMA/EIA | VIC | 8572.pdf (1035090 bytes) | 
    | 8572A | RCA (HB3) | VIC | 8572A.pdf (496504 bytes) | 
    | 8573 | RCA (HB3) | VIC | 8573.pdf (48111 bytes) | 
    | 8573 | RMA/EIA | VIC | 8573.pdf (1102393 bytes) | 
    | 8573A | RCA (HB3) | VIC | 8573A.pdf (461298 bytes) | 
    | 8574 | RMA/EIA | TRT | 8574.pdf (222466 bytes) | 
    | 8575 | RCA (HB3) | PMT | 8575.pdf (862676 bytes) | 
    | 8576 (= 264) | Eimac | P~ | 264.pdf (1115019 bytes) | 
    | 8578 | RMA/EIA | TRT | 8578.pdf (328039 bytes) | 
    | 857B (= ML857B) | Machlett Laboratories | R° | 857B.pdf (124275 bytes) | 
    | 857B | RCA (HB3) | R° | 857B.pdf (243206 bytes) | 
    | 857B (= AH205) | EEV | R° | AH205.pdf (142355 bytes) | 
    | 857B | Amperex | R° | 857B.pdf (281447 bytes) | 
    | 857B (= GL857B) | General Electric | R° | GL857B.pdf (508865 bytes) | 
    | 857B (= AH205) | EEV | R° | AH205.pdf (206021 bytes) | 
    | 858 | RCA (HB3) | T~ | 858.pdf (297082 bytes) | 
    | 8582 | RMA/EIA | LDR | 8582.pdf (239767 bytes) | 
    | 8587 | RCA (HB3) | Q~ | 8587.pdf (81607 bytes) | 
    | 859 | Amperex | T~ | 859.pdf (407346 bytes) | 
    | 8590 | Eimac | Q~ | 8590.pdf (1824121 bytes) | 
    | 8591 (= TBH6/14) | Philips | T~ | TBH6-14.pdf (299236 bytes) | 
    | 8592 (= TBH7/8000) | Philips | T~ | TBH7-8000.pdf (264642 bytes) | 
    | 8592 (= TBH7/8000) | Philips | T~ | TBH7-8000.pdf (208232 bytes) | 
    | 8593 (= TBH7/9000) | Philips | T~ | TBH7-9000.pdf (210783 bytes) | 
    | 8594 (= TBH12/38) | Philips | T~ | TBH12-38.pdf (290836 bytes) | 
    | 8596 | RCA (HB3) | Q~ | 8596.pdf (91921 bytes) | 
    | 85A1 | Philips | v`° | 85A1.pdf (210428 bytes) | 
    | 85A1 (= 0E3) | Amperex | v`° | 0E3.pdf (144542 bytes) | 
    | 85A1 | Mullard | v`° | 85A1.pdf (72787 bytes) | 
    | 85A2   | Philips | v`° | 85A2.pdf (189945 bytes) | 
    | 85A2 (= 0G3)   | Amperex | v`° | 0G3.pdf (150595 bytes) | 
    | 85A2     | Siemens | v`° | 85A2.pdf (83642 bytes) (de) | 
    | 860 | RCA (HB3) | Q~ | 860.pdf (257434 bytes) | 
    | 8604 | RMA/EIA | VIC | 8604.pdf (361661 bytes) | 
    | 8605-1 (= 8605/V1) | RCA (HB3) | IIT | 8605-V1.pdf (771715 bytes) | 
    | 8605-2 (= 8605/V2) | RCA (HB3) | IIT | 8605-V1.pdf (771715 bytes) | 
    | 8605-3 (= 8605/V2) | RCA (HB3) | IIT | 8605-V1.pdf (771715 bytes) | 
    | 8605/V1 | RCA (HB3) | IIT | 8605-V1.pdf (771715 bytes) | 
    | 8605/V2 | RCA (HB3) | IIT | 8605-V1.pdf (771715 bytes) | 
    | 8606 | RCA (HB3) | IIT | 8605-V1.pdf (771715 bytes) | 
    | 8608   | Amperex | P | 8608.pdf (179137 bytes) | 
    | 861 | RCA (HB3) | Q~ | 861.pdf (315907 bytes) | 
    | 8610 (= TBH6/6000) | Philips | T~ | TBH6-6000.pdf (115989 bytes) | 
    | 8612 | RMA/EIA | v^° | 8612.pdf (83270 bytes) | 
    | 8618 (= ML8618) | Machlett Laboratories | T~ | 8618.pdf (812944 bytes) | 
    | 8618V (= ML8618V) | Machlett Laboratories | T~ | 8618.pdf (812944 bytes) | 
    | 862 | GE |  | 862.pdf (193223 bytes) | 
    | 8621 | Eimac | Q~ | 7203.pdf (1438378 bytes) | 
    | 8627 | RCA (HB3) | t~ | 8627.pdf (360882 bytes) | 
    | 8628 | RCA (HB3) | t | 8628.pdf (327444 bytes) | 
    | 862A | RCA (HB3) | T~ | 862A.pdf (225615 bytes) | 
    | 862A (= GL862A) | General Electric | T~ | GL862A.pdf (802600 bytes) | 
    | 8637 | Amperex | QQ~ | 8637.pdf (644775 bytes) | 
    | 864   | RCA (HB3) | t | 864.pdf (114341 bytes) | 
    | 864 | Raytheon | t | 841.pdf (166428 bytes) | 
    | 864 | Sylvania | t | 864.pdf (53872 bytes) (fr) | 
    | 8644 | RCA (HB3) | PMT | 8644.pdf (886179 bytes) | 
    | 8645 | RCA (HB3) | PMT | 8644.pdf (886179 bytes) | 
    | 8646 | RCA (HB3) | Q~ | 8646.pdf (491410 bytes) | 
    | 865   | RCA (HB3) | Q~ | 865.pdf (303769 bytes) | 
    | 865 | Hytron | Q~ | 865.pdf (316909 bytes) | 
    | 866 | Raytheon | R° | 866A.pdf (187274 bytes) | 
    | 866 | Hytron | R° | 866.pdf (362973 bytes) | 
    | 8660 (= 4CX1500B) | Eimac | Q~ | 4CX1500B.pdf (1493025 bytes) | 
    | 8661 (= 4CW10000A) | Svetlana | Q~ | 4CW10000A.pdf (116497 bytes) | 
    | 8664 | RCA (HB3) | PMT | 8664.pdf (616926 bytes) | 
    | 8664/V1 | RCA (HB3) | PMT | 8664-V1.pdf (95829 bytes) | 
    | 8668 (= YD1172) | Philips | T~ | YD1170.pdf (255234 bytes) | 
    | 866A | Mazda-Belvu | R° | 866A.pdf (87597 bytes) (fr) | 
    | 866A   | RCA (HB3) | R° | 866A.pdf (166852 bytes) | 
    | 866A (= 2V/400A) | STC | R° | 2V-400A.pdf (126596 bytes) | 
    | 866A | Raytheon | R° | 866A.pdf (187274 bytes) | 
    | 866A | Eimac | R° | 866A.pdf (317256 bytes) | 
    | 866A | Amperex | R° | 866A.pdf (280535 bytes) | 
    | 866A (= GL866A) | General Electric | R° | GL866A.pdf (500879 bytes) | 
    | 866Jr | Hytron | R° | 866Jr.pdf (367331 bytes) | 
    | 8673 | RCA (HB3) | ORT | 8673.pdf (415824 bytes) | 
    | 8674 | RCA (HB3) | ORT | 8674.pdf (419968 bytes) | 
    | 868 | RCA (HB3) | PHT° | 868.pdf (135737 bytes) | 
    | 868 (= GL868) | General Electric | PHT° | GL868.pdf (512554 bytes) | 
    | 8680 (= YD1212) | Philips | T~ | YD1212.pdf (206161 bytes) | 
    | 8684 | RCA (HB3) | MAG | 8684.pdf (484709 bytes) | 
    | 8685 | RCA (HB3) | ORT | 8685.pdf (429448 bytes) | 
    | 869B (= ML869B) | Machlett Laboratories | R° | 869B.pdf (126746 bytes) | 
    | 869B | RCA (HB3) | R° | 869B.pdf (214935 bytes) | 
    | 869B | Amperex | R° | 869B.pdf (294946 bytes) | 
    | 869B | Eimac | R° | 869B.pdf (930371 bytes) | 
    | 869B (= GL869B) | General Electric | R° | GL869B.pdf (505019 bytes) | 
    | 869B | EEV | R° | 869B.pdf (177212 bytes) | 
    | 869BL | Eimac | R° | 869B.pdf (930371 bytes) | 
    | 86A1 | ChampionRadioTube |  | 42A1etc.pdf (99727 bytes) | 
    | 86A2 | ChampionRadioTube |  | 42A1etc.pdf (99727 bytes) | 
    | 86B2 | ChampionRadioTube |  | 42A1etc.pdf (99727 bytes) | 
    | 872 | Raytheon | R° | 866A.pdf (187274 bytes) | 
    | 8727 | RCA (HB3) | t | 8727.pdf (841497 bytes) | 
    | 8728 (= YD1150A) | Philips | T~ | YD1150A.pdf (170583 bytes) | 
    | 872A (= ML872A) | Machlett Laboratories | R° | 872A.pdf (149331 bytes) | 
    | 872A | RCA (HB3) | R° | 872A.pdf (151159 bytes) | 
    | 872A (= 2V/471A) | STC | R° | 2V-471A.pdf (123131 bytes) | 
    | 872A | Eimac | R° | 872A.pdf (291542 bytes) | 
    | 872A | Amperex | R° | 872A.pdf (282692 bytes) | 
    | 872A (= GL872A) | General Electric | R° | GL872A.pdf (505669 bytes) | 
    | 8730 (= YD1152) | Philips | T~ | YD1152.pdf (177135 bytes) | 
    | 8731 (= YD1160) | Philips | T~ | YD1160.pdf (226168 bytes) | 
    | 8733 (= YD1162) | Philips | T~ | YD1160.pdf (226168 bytes) | 
    | 8734 (= YD1173) | Philips | T~ | YD1173.pdf (193364 bytes) | 
    | 8735 (= YD1182) | Philips | T~ | YD1180.pdf (326585 bytes) | 
    | 8736 (= YD1192) | Philips | T~ | YD1190.pdf (274180 bytes) | 
    | 874 | RCA | v`° | 874.pdf (45148 bytes) | 
    | 874 (= GL874) | General Electric | v`° | GL874.pdf (1026648 bytes) | 
    | 8741 (= ML8741) | Machlett Laboratories | T~ | 8741.pdf (903847 bytes) | 
    | 8748 | RCA (HB3) | ORT | 8748.pdf (71964 bytes) | 
    | 8749 | RCA (HB3) | ORT | 8749.pdf (64401 bytes) | 
    | 8752 (= YD1202) | Philips | T~ | YD1202.pdf (217128 bytes) | 
    | 8755 | Eimac | T~ | 8755.pdf (893473 bytes) | 
    | 8755A | Eimac | T~ | 8755.pdf (893473 bytes) | 
    | 8757 | Eimac | T~ | 8757.pdf (1530772 bytes) | 
    | 876   | RCA | c | 874.pdf (45148 bytes) | 
    | 8765 | ITT | THY | 8765.pdf (156071 bytes) | 
    | 8772 (= ML8772) | Machlett Laboratories | T~ | 8772.pdf (902481 bytes) | 
    | 8773 (= ML8773) | Machlett Laboratories | T~ | 8772.pdf (902481 bytes) | 
    | 8775 | RCA (HB3) | ORT | 8775.pdf (399395 bytes) | 
    | 878 | RCA (HB3) | R | 878.pdf (61643 bytes) | 
    | 8785 (= ML8785) | Machlett Laboratories | Q~ | 8785.pdf (1002491 bytes) | 
    | 8786 (= ML8786) | Machlett Laboratories | Q~ | 8785.pdf (1002491 bytes) | 
    | 879 | Mazda | R | 879.pdf (83573 bytes) (fr) | 
    | 879 | Sylvania | R | 2X2.pdf (41787 bytes) (fr) | 
    | 879 (= 2X2) | Tung-Sol | R | 2X2.pdf (49749 bytes) | 
    | 8791 | RCA | Q~ | 8791.pdf (806863 bytes) | 
    | 8791/V1 | RCA (HB3) | Q~ | 8791-V1.pdf (79708 bytes) | 
    | 8792 | RCA | Q~ | 8792.pdf (827395 bytes) | 
    | 8792/V1 | RCA (HB3) | Q~ | 8792-V1.pdf (86219 bytes) | 
    | 8793 | RCA (HB3) | Q~ | 8793.pdf (77456 bytes) | 
    | 8794 | RCA (HB3) | Q~ | 8794.pdf (79409 bytes) | 
    | 8795 (= ML8795) | Machlett Laboratories | T~ | 8795.pdf (392468 bytes) | 
    | 8796 (= ML8796) | Machlett Laboratories | T~ | 8795.pdf (392468 bytes) | 
    | 880 (= ML880) | Machlett Laboratories | T~ | 5658.pdf (501887 bytes) | 
    | 880 | RCA (HB3) | T~ | 880.pdf (440293 bytes) | 
    | 880 (= GL880) | General Electric | T~ | GL880.pdf (651375 bytes) | 
    | 8801 (= YD1180) | Philips | T~ | YD1180.pdf (326585 bytes) | 
    | 8806 | RCA (HB3) | Q~ | 8806.pdf (82314 bytes) | 
    | 8807 | RCA (HB3) | Q~ | 8807.pdf (84193 bytes) | 
    | 8808     | RCA (HB3) | t | 8808.pdf (342002 bytes) | 
    | 8809 | Eimac | Q~ | 8809.pdf (1143368 bytes) | 
    | 881 | Westinghouse |  | 881.pdf (100702 bytes) | 
    | 8811 | RCA (HB3) | KLY | 8811.pdf (278676 bytes) | 
    | 8812 (= YL1420) | Philips | Q~ | YL1420.pdf (449289 bytes) | 
    | 8813 (= YL1430) | Philips | Q~ | YL1430.pdf (498832 bytes) | 
    | 8814 (= YL1440) | Philips | Q~ | YL1440.pdf (433909 bytes) | 
    | 8824 | RCA (HB3) | KLY | 8824.pdf (346615 bytes) | 
    | 8825 | RCA (HB3) | KLY | 8825.pdf (350266 bytes) | 
    | 8826 | RCA (HB3) | KLY | 8826.pdf (312174 bytes) | 
    | 8828 | RCA (HB3) | Q~ | 8828.pdf (422876 bytes) | 
    | 884     | RCA (HB3) | THY | 884.pdf (161586 bytes) | 
    | 884 | Mazda | THY | 884.pdf (135022 bytes) (fr) | 
    | 884 | Sylvania | THY | 884.pdf (71452 bytes) (fr) | 
    | 884 (= GL884) | General Electric | THY | GL884.pdf (562599 bytes) | 
    | 8846 (= ML8846) | Machlett Laboratories | T~ | 8846.pdf (694548 bytes) | 
    | 8847 | Eimac | T~ | 8847.pdf (1339393 bytes) | 
    | 8847A | Eimac | T~ | 8847.pdf (1339393 bytes) | 
    | 885 | RCA (HB3) | THY | 884.pdf (161586 bytes) | 
    | 885 | Sylvania | THY | 884.pdf (71452 bytes) (fr) | 
    | 885 (= GL885) | General Electric | THY | GL885.pdf (548357 bytes) | 
    | 8850 | RCA (HB3) | PMT | 8850.pdf (887619 bytes) | 
    | 8851 | RCA (HB3) | PMT | 8851.pdf (50838 bytes) | 
    | 8857/V1 | RCA (HB3) | IIT | 8857-V1.pdf (542936 bytes) | 
    | 8857/V2 | RCA (HB3) | IIT | 8857-V1.pdf (542936 bytes) | 
    | 8858 | RCA (HB3) | IIT | 8857-V1.pdf (542936 bytes) | 
    | 886 | RCA | c | 874.pdf (45148 bytes) | 
    | 8867 (= YD1352S) | Philips | FET | YD1352S.pdf (203469 bytes) | 
    | 8873 | Eimac | T~ | 8873.pdf (1536207 bytes) | 
    | 8874 | Eimac | T~ | 8873.pdf (1536207 bytes) | 
    | 8874 (= 3CX400A7) | Svetlana | T~ | 3CX400A7.pdf (54486 bytes) | 
    | 8875 | Eimac | T~ | 8873.pdf (1536207 bytes) | 
    | 8876 | Eimac | Q~ | 8876.pdf (1295037 bytes) | 
    | 8877 | Eimac | T~ | 8877.pdf (1139038 bytes) | 
    | 889 | Amperex | T~ | 889.pdf (424954 bytes) | 
    | 8890 | RCA (HB3) | Q~ | 8890.pdf (387360 bytes) | 
    | 8891 | RCA (HB3) | Q~ | 8891.pdf (484519 bytes) | 
    | 8892 | Eimac | T~ | 8892.pdf (330516 bytes) | 
    | 8893 | Eimac | T~ | 8893.pdf (371636 bytes) | 
    | 889A (= ML889A) | Machlett Laboratories | T~ | 889A.pdf (398568 bytes) | 
    | 889A | RCA (HB3) | T~ | 889A.pdf (472614 bytes) | 
    | 889A (= GL889A) | General Electric | T~ | GL889A.pdf (785376 bytes) | 
    | 889R | Amperex | T~ | 889R.pdf (411684 bytes) | 
    | 889RA (= ML889RA) | Machlett Laboratories | T~ | 889A.pdf (398568 bytes) | 
    | 889RA | RCA (HB3) | T~ | 889RA.pdf (178525 bytes) | 
    | 89 | RCA | P | 89.pdf (89948 bytes) | 
    | 89 | Sylvania | P | 89.pdf (77219 bytes) (fr) | 
    | 89 | Tung-Sol | P | 89.pdf (76991 bytes) | 
    | 8904 | Eimac | Q~ | 8904.pdf (1207415 bytes) | 
    | 8906 (= ML8906) | Machlett Laboratories | T~ | 8906.pdf (832105 bytes) | 
    | 8906 | Eimac | T~ | 8906.pdf (1360295 bytes) | 
    | 8906AL | Eimac | T~ | 8906AL.pdf (1172472 bytes) | 
    | 8907 (= ML8907) | Machlett Laboratories | T~ | 8906.pdf (832105 bytes) | 
    | 8907 | Eimac | T~ | 8906.pdf (1360295 bytes) | 
    | 8909 | Eimac | Q~ | 8909.pdf (1251216 bytes) | 
    | 891 (= ML891) | Machlett Laboratories | T~ | 891.pdf (444891 bytes) | 
    | 891 | RCA (HB3) | T~ | 891.pdf (468602 bytes) | 
    | 891 | Amperex | T~ | 891.pdf (447928 bytes) | 
    | 891 (= GL891) | General Electric | T~ | GL891.pdf (857646 bytes) | 
    | 8910 | Eimac | Q~ | 8910.pdf (1336511 bytes) | 
    | 8911 | Eimac | T~ | 8911.pdf (326091 bytes) | 
    | 8912 | Eimac | T~ | 8912.pdf (330212 bytes) | 
    | 8913 (= YD1195) | Philips | T~ | YD1195.pdf (348803 bytes) | 
    | 8915 (= YL1520) | Philips | Q~ | YL1520.pdf (369976 bytes) | 
    | 8918 (= YD1342) | Philips | T~ | YD1342.pdf (199366 bytes) | 
    | 891R (= ML891R) | Machlett Laboratories | T~ | 891.pdf (444891 bytes) | 
    | 891R | RCA (HB3) | T~ | 891R.pdf (184735 bytes) | 
    | 891R | Amperex | T~ | 891R.pdf (388912 bytes) | 
    | 892 (= ML892) | Machlett Laboratories | T~ | 892.pdf (456430 bytes) | 
    | 892 | RCA (HB3) | T~ | 892.pdf (427936 bytes) | 
    | 892 | Amperex | T~ | 892.pdf (466538 bytes) | 
    | 892 (= GL892) | General Electric | T~ | GL892.pdf (836514 bytes) | 
    | 8921 | Eimac | Q~ | 8809.pdf (1143368 bytes) | 
    | 892R (= ML892R) | Machlett Laboratories | T~ | 892.pdf (456430 bytes) | 
    | 892R | RCA (HB3) | T~ | 892R.pdf (200684 bytes) | 
    | 892R | Amperex | T~ | 892R.pdf (463522 bytes) | 
    | 893 | GE |  | 893.pdf (168723 bytes) | 
    | 8930 | Eimac | Q~ | 8930.pdf (1233918 bytes) | 
    | 8933 | Eimac | T~ | 8933.pdf (710209 bytes) | 
    | 8935 (= YD1185) | Philips | T~ | YD1185.pdf (331459 bytes) | 
    | 8936 (= YD1187) | Philips | T~ | YD1185.pdf (331459 bytes) | 
    | 8937 (= YD1197) | Philips | T~ | YD1195.pdf (348803 bytes) | 
    | 8938 | Eimac | T~ | 8938.pdf (1058906 bytes) | 
    | 893A (= ML893A) | Machlett Laboratories | T~ | 893A.pdf (514731 bytes) | 
    | 893A | RCA (HB3) | T~ | 893A.pdf (198160 bytes) | 
    | 893A (= GL893A) | General Electric | T~ | GL893A.pdf (835642 bytes) | 
    | 893AR (= ML893AR) | Machlett Laboratories | T~ | 893AR.pdf (542138 bytes) | 
    | 893AR | RCA (HB3) | T~ | 893AR.pdf (435984 bytes) | 
    | 893R | GE | T~ | 893R.pdf (173431 bytes) | 
    | 8940 | Eimac | T~ | 8940.pdf (1612609 bytes) | 
    | 8941 | Eimac | T~ | 8941.pdf (1419041 bytes) | 
    | 8950 | GeneralElectric | P~ | 8950.pdf (215002 bytes) | 
    | 8952 (= YD1175) | Philips | T~ | YD1175.pdf (260413 bytes) | 
    | 8954 | Eimac | Q~ | 8954.pdf (1192127 bytes) | 
    | 8957 | Eimac | Q~ | 8957.pdf (1248391 bytes) | 
    | 8959 | Eimac | Q~ | 8959.pdf (1481068 bytes) | 
    | 8973 | Eimac | Q~ | 8973.pdf (1495675 bytes) | 
    | 8974 | Eimac | Q~ | 8974.pdf (2782582 bytes) | 
    | 8989 | Eimac | Q~ | 8989.pdf (952286 bytes) | 
    | 8989 (= 4CX12000A) | Svetlana | Q~ | 4CX12000A.pdf (77768 bytes) | 
    | 898A | RCA (HB3) | T~ | 898A.pdf (477399 bytes) | 
    | 8990 | Eimac | Q~ | 8990.pdf (1156867 bytes) | 
    | 8990 (= 4CX20000A) | Svetlana | Q~ | 4CX20000Aspec.pdf (129106 bytes) | 
    | 8990A | Eimac | Q~ | 8990.pdf (1156867 bytes) | 
    | 899A | Westinghouse |  | 899-A.pdf (111320 bytes) | 
    | 8A/54HM | Ferranti | CRR | 8A-54HM.pdf (77184 bytes) | 
    | 8A/54LM | Ferranti | CRR | 8A-54HM.pdf (77184 bytes) | 
    | 8A/56HM | Ferranti | CRR | 8A-56HM.pdf (79513 bytes) | 
    | 8A/56LM | Ferranti | CRR | 8A-56HM.pdf (79513 bytes) | 
    | 8A1 | Brimar | p | 8A1.pdf (300401 bytes) | 
    | 8AC10 | General Electric | ttt | 8AC10.pdf (83909 bytes) | 
    | 8AC10 | RCA (RC30) | ttt | 6AB4.pdf (283760 bytes) | 
    | 8AC9 | Sylvania | ddp | 6AC9.pdf (114155 bytes) | 
    | 8AL9 | Sylvania | tP | 6AL9.pdf (484977 bytes) | 
    | 8AL9 | General Electric | tP | 8AL9.pdf (471072 bytes) | 
    | 8AP4 | Tung-Sol | CRB | 8AP4.pdf (80342 bytes) | 
    | 8AP4A | General Electric | CRB | 8AP4A.pdf (571566 bytes) | 
    | 8AR11 | General Electric | pp | 8AR11.pdf (110364 bytes) | 
    | 8AR11 | RCA (RC30) | pp | 6AR11.pdf (469509 bytes) | 
    | 8AU8 | RCA (HB3) | tp | 8AU8.pdf (90618 bytes) | 
    | 8AU8 | RCA (HB3) | tp | 8AW8A.pdf (124292 bytes) | 
    | 8AU8 | Tung-Sol | tp | 8AU8.pdf (536636 bytes) | 
    | 8AU8A | Tung-Sol | tp | 8AU8.pdf (536636 bytes) | 
    | 8AW8A | RCA (HB3) | tp | 8AW8A.pdf (124292 bytes) | 
    | 8AW8A | General Electric | tp | 6AW8A.pdf (980634 bytes) | 
    | 8AW8A | Tung-Sol | tp | 8AW8A.pdf (149628 bytes) | 
    | 8AW8A | RCA (RC30) | tp | 6AW8A.pdf (603829 bytes) | 
    | 8B/08L2B | Ferranti | CRR | 8B-08L2B.pdf (93349 bytes) | 
    | 8B/08VB | Ferranti | CRR | 8B-08L2B.pdf (93349 bytes) | 
    | 8B/08ZB | Ferranti | CRR | 8B-08L2B.pdf (93349 bytes) | 
    | 8B10 | RCA (HB3) | ddtt | 8AW8A.pdf (124292 bytes) | 
    | 8B10     | General Electric | ddtt | 8AR11.pdf (110364 bytes) | 
    | 8B10 | RCA (RC30) | ddtt | 6AW8A.pdf (603829 bytes) | 
    | 8B8 (= XCL82) | Miniwatt | tP | XCL82.pdf (396945 bytes) (pt) | 
    | 8B8 | RCA (RC30) | tP | 16A8.pdf (180977 bytes) | 
    | 8B8 | Rogers | tP | 8B8.pdf (452803 bytes) | 
    | 8BA11 | Sylvania | tpp | 6BA11.pdf (153450 bytes) | 
    | 8BA11 | General Electric | tpp | 8BA11.pdf (94947 bytes) | 
    | 8BA11 | RCA (RC30) | tpp | 6BA8A.pdf (149116 bytes) | 
    | 8BA8 | Sylvania | tP | 6BA8.pdf (141570 bytes) | 
    | 8BA8A | RCA (HB3) | tP | 8AW8A.pdf (124292 bytes) | 
    | 8BA8A | Tung-Sol | tP | 8BA8A.pdf (104458 bytes) | 
    | 8BA8A | Sylvania | tP | 6BA8A.pdf (568001 bytes) | 
    | 8BA8A | RCA (RC30) | tP | 6BA8A.pdf (149116 bytes) | 
    | 8BH8 | RCA (HB3) | tp | 8AW8A.pdf (124292 bytes) | 
    | 8BM11 | General Electric | pp | 8BM11.pdf (528184 bytes) | 
    | 8BM11 | RCA (RC30) | pp | 8BM11.pdf (145782 bytes) | 
    | 8BN11 | General Electric | pp | 8BN11.pdf (83789 bytes) | 
    | 8BN8   | RCA (HB3) | ddt | 8AW8A.pdf (124292 bytes) | 
    | 8BN8 | Sylvania | ddt | 6BN8.pdf (182530 bytes) | 
    | 8BN8 | Sylvania | ddt | 6BN8.pdf (445667 bytes) | 
    | 8BN8   | RCA (RC30) | ddt | 6BN8.pdf (67785 bytes) | 
    | 8BP4 | Tung-Sol | CRB | 8BP4.pdf (103997 bytes) | 
    | 8BQ11 | General Electric | pp | 8BQ11.pdf (86904 bytes) | 
    | 8BQ11 | RCA (RC30) | pp | 8BM11.pdf (145782 bytes) | 
    | 8BQ5     | RCA (HB3) | P | 8AW8A.pdf (124292 bytes) | 
    | 8BQ5 | General Electric | P | 6BQ5.pdf (667997 bytes) | 
    | 8BQ5 | Tung-Sol | P | 8BQ5.pdf (538574 bytes) | 
    | 8BQ5     | RCA (RC30) | P | 6BN11.pdf (549900 bytes) | 
    | 8BQ7A | CompangnieIndustrielle… | tt | 8BQ7A.pdf (79789 bytes) | 
    | 8BU11 | General Electric | ttp | 8BU11.pdf (592100 bytes) | 
    | 8BU11 | RCA (RC30) | ttp | 8BM11.pdf (145782 bytes) | 
    | 8C22 | FTR |  | 8C22.pdf (58942 bytes) | 
    | 8C23 | FTR |  | 8C23.pdf (58375 bytes) | 
    | 8CB11 | General Electric | pp | 8CB11.pdf (394274 bytes) | 
    | 8CG7   | RCA (HB3) | tt | 8AW8A.pdf (124292 bytes) | 
    | 8CG7   | RCA (HB3) | tt | 8CG7.pdf (66921 bytes) | 
    | 8CG7 | General Electric | tt | 6CG7.pdf (470844 bytes) | 
    | 8CG7 | Tung-Sol | tt | 8CG7.pdf (164545 bytes) | 
    | 8CG7   | RCA (RC30) | tt | 6FQ7.pdf (132542 bytes) | 
    | 8CM7   | RCA (HB3) | tt | 8CG7.pdf (66921 bytes) | 
    | 8CM7   | RCA (HB3) | tt | 8CM7.pdf (56826 bytes) | 
    | 8CM7 | Tung-Sol | tt | 8CM7.pdf (265816 bytes) | 
    | 8CM7   | RCA (RC30) | tt | 6CL8A.pdf (210597 bytes) | 
    | 8CN7 | RCA (HB3) | ddt | 8CG7.pdf (66921 bytes) | 
    | 8CN7 | RCA (HB3) | ddt | 8CM7.pdf (56826 bytes) | 
    | 8CN7 | General Electric | ddt | 6CN7.pdf (454273 bytes) | 
    | 8CN7 | Tung-Sol | ddt | 8CN7.pdf (248287 bytes) | 
    | 8CP1 | Sylvania | CRT | 8CP1.pdf (160744 bytes) | 
    | 8CP11 | Sylvania | CRT | 8CP1.pdf (160744 bytes) | 
    | 8CP2 | Sylvania | CRT | 8CP1.pdf (160744 bytes) | 
    | 8CP4 | Sylvania | CRT | 8CP1.pdf (160744 bytes) | 
    | 8CP5 | Sylvania | CRT | 8CP1.pdf (160744 bytes) | 
    | 8CP7 | Sylvania | CRT | 8CP1.pdf (160744 bytes) | 
    | 8CS7 | RCA (HB3) | tT | 8CG7.pdf (66921 bytes) | 
    | 8CS7     | Sylvania | tT | 6CS7.pdf (160016 bytes) | 
    | 8CS7 | Tung-Sol | tT | 8CS7.pdf (87008 bytes) | 
    | 8CS7     | Sylvania | tT | 6CS7.pdf (628395 bytes) | 
    | 8CS7 | RCA (RC30) | tT | 6CS6.pdf (457275 bytes) | 
    | 8CW5   | RCA (HB3) | P | 8CG7.pdf (66921 bytes) | 
    | 8CW5 (= XL86) | Miniwatt | P | XL86.pdf (174752 bytes) (pt) | 
    | 8CW5   | RCA (RC30) | P | 6CS6.pdf (457275 bytes) | 
    | 8CW5 | Philips | P | 15CW5.pdf (209643 bytes) | 
    | 8CW5A | RMA/EIA | P | 8CW5A.pdf (27189 bytes) | 
    | 8CX8 | RCA (HB3) | tp | 8CG7.pdf (66921 bytes) | 
    | 8CX8 | RCA (HB3) | tp | 8CM7.pdf (56826 bytes) | 
    | 8CX8 | General Electric | tp | 6CX8.pdf (840587 bytes) | 
    | 8CX8 | Tung-Sol | tp | 8CX8.pdf (397052 bytes) | 
    | 8CX8 | RCA (RC30) | tp | 6CS6.pdf (457275 bytes) | 
    | 8CY7 | General Electric | tt | 6CY7.pdf (534232 bytes) | 
    | 8CY7 | Tung-Sol | tt | 8CY7.pdf (259090 bytes) | 
    | 8D2   | Brimar | p | 7Z4.pdf (45086 bytes) | 
    | 8D21 | RCA (HB3) | QQ~ | 8D21.pdf (438373 bytes) | 
    | 8D5 (= 6BR7) | Brimar | p | 6BR7.pdf (127184 bytes) | 
    | 8D8 | Brimar | p | 8D8.pdf (556946 bytes) | 
    | 8DP4 | RCA (HB3) | CRB | 8DP4.pdf (68181 bytes) | 
    | 8DP4 | Sylvania | CRB | 8DP4.pdf (261909 bytes) | 
    | 8DX8 (= XCL84) | Miniwatt | tP | XCL84.pdf (219707 bytes) (pt) | 
    | 8EB8   | RCA (HB3) | tp | 8CG7.pdf (66921 bytes) | 
    | 8EB8   | RCA (HB3) | tp | 8CM7.pdf (56826 bytes) | 
    | 8EB8 | Tung-Sol | tp | 8EB8.pdf (100394 bytes) | 
    | 8EB8   | RCA (RC30) | tp | 6GK5.pdf (508126 bytes) | 
    | 8EM5   | RCA (HB3) | P | 8CM7.pdf (56826 bytes) | 
    | 8EM5   | RCA (HB3) | P | 8EM5.pdf (14643 bytes) | 
    | 8EM5 | Sylvania | P | 6EM5.pdf (134957 bytes) | 
    | 8EM5 | Tung-Sol | P | 8EM5.pdf (111568 bytes) | 
    | 8EM5   | RCA (RC30) | P | 6EA8.pdf (574278 bytes) | 
    | 8ET7 | RCA (HB3) | ddp | 8ET7.pdf (99333 bytes) | 
    | 8ET7   | Sylvania | ddp | 6ET7.pdf (109704 bytes) | 
    | 8ET7 | Tung-Sol | ddp | 8ET7.pdf (85658 bytes) | 
    | 8F76R | NEC | Q~ | 8F76R.pdf (1640158 bytes) | 
    | 8FP4 | Sylvania | CRM | 8FP4.pdf (206067 bytes) | 
    | 8FQ7   | RCA (HB3) | tT | 8FQ7.pdf (72118 bytes) | 
    | 8FQ7 | Tung-Sol | tT | 8FQ7.pdf (108638 bytes) | 
    | 8FQ7   | RCA (RC30) | tT | 6FQ7.pdf (132542 bytes) | 
    | 8GJ7 | RCA (HB3) | tp | 8FQ7.pdf (72118 bytes) | 
    | 8GJ7 | RCA (RC30) | tp | 6GB5.pdf (411522 bytes) | 
    | 8GN8 | RCA (HB3) | tp | 8FQ7.pdf (72118 bytes) | 
    | 8GN8 | RCA (HB3) | tp | 8GN8.pdf (14804 bytes) | 
    | 8GN8 | Tung-Sol | tp | 8GN8.pdf (131940 bytes) | 
    | 8GN8 | RCA (RC30) | tp | 6GK5.pdf (508126 bytes) | 
    | 8GU7 | RCA (HB3) | tt | 8FQ7.pdf (72118 bytes) | 
    | 8GU7 | RCA (RC30) | tt | 6GK5.pdf (508126 bytes) | 
    | 8GX7 | RMA/EIA | tp | 4GX7.pdf (138229 bytes) | 
    | 8HA6 | RMA/EIA | P | 6HA6.pdf (130987 bytes) | 
    | 8HG8 | Sylvania | tp | 6HG8.pdf (131935 bytes) | 
    | 8HP4 | RCA (HB3) | CRB | 8HP4.pdf (149401 bytes) | 
    | 8JE8 | Sylvania | tP | 6JE8.pdf (84341 bytes) | 
    | 8JK8 | Sylvania | tt | 6JK8.pdf (118027 bytes) | 
    | 8JL8 | Raytheon |  | 6JL8.pdf (98612 bytes) | 
    | 8JP4 | ThomasElectronics |  | 8JP4.pdf (95583 bytes) | 
    | 8JU8A | RCA (HB3) | dddd | 8FQ7.pdf (72118 bytes) | 
    | 8JU8A | RCA (RC30) | dddd | 6JU8A.pdf (328029 bytes) | 
    | 8JV8 | RCA (HB3) | tp | 8FQ7.pdf (72118 bytes) | 
    | 8JV8 | Tung-Sol | tp | 8JV8.pdf (170356 bytes) | 
    | 8JV8 | RCA (RC30) | tp | 6JU8A.pdf (328029 bytes) | 
    | 8KA8 | RCA (HB3) | tp | 8FQ7.pdf (72118 bytes) | 
    | 8KA8 | Sylvania | tp | 6KA8.pdf (135911 bytes) | 
    | 8KA8 | RCA (RC30) | tp | 6KA8.pdf (1162104 bytes) | 
    | 8KP4 | Sylvania | CRM | 8KP4.pdf (192058 bytes) | 
    | 8KR8 | Sylvania |  | 8KR8.pdf (119830 bytes) | 
    | 8KS8 | Sylvania |  | 6KS8.pdf (102484 bytes) | 
    | 8LC8 | RCA (HB3) | tp | 8FQ7.pdf (72118 bytes) | 
    | 8LC8 | RCA (RC30) | tp | 6LC8.pdf (728202 bytes) | 
    | 8LC8 | RCA | tp | 6LC8.pdf (220964 bytes) | 
    | 8LM3V 8   3   | Soviet | CRB | 8LM3V.pdf (852716 bytes) | 
    | 8LO29I 8   29   | Soviet | CRO | 8LO29I.pdf (295655 bytes) | 
    | 8LO39V 8   39   | Soviet | CRO | 8LO39V.pdf (2192822 bytes) (ru) | 
    | 8LP4 | Sylvania | CRB | 8LP4.pdf (208011 bytes) | 
    | 8LT8 | RCA (RC30) | ddp | 6LC8.pdf (728202 bytes) | 
    | 8LT8 | RMA/EIA | ddp | 8LT8.pdf (231684 bytes) | 
    | 8MP18 | Dumont |  | 8MP4.pdf (100493 bytes) | 
    | 8MP4 | Dumont |  | 8MP4.pdf (100493 bytes) | 
    | 8NP4 | RCA |  | 8NP4.pdf (160575 bytes) | 
    | 8QP4 | RCA (HB3) | CRM | 8QP4.pdf (77011 bytes) | 
    | 8QP4 | Sylvania | CRM | 8QP4.pdf (226474 bytes) | 
    | 8RP4 | GE |  | 8RP4.pdf (112967 bytes) | 
    | 8SA1 | Mazda | CRO | 8SA1.pdf (96543 bytes) (fr) | 
    | 8SA2 | Mazda | CRO | 8SA1.pdf (96543 bytes) (fr) | 
    | 8SA4 | Mazda | CRO | 8SA1.pdf (96543 bytes) (fr) | 
    | 8SA5 | Mazda | CRO | 8SA1.pdf (96543 bytes) (fr) | 
    | 8SN7GTB | Sylvania | tt | 6SN7GTA.pdf (397641 bytes) | 
    | 8SP7 | GE |  | 8SP7.pdf (165241 bytes) | 
    | 8T39 | NEC | T~ | 8T39.pdf (480414 bytes) | 
    | 8XP4 | RCA (HB3) | CRT | 8XP4.pdf (71378 bytes) | 
    | 8XP4   | Sylvania | CRT | 8XP4.pdf (154662 bytes) | 
    | 8XP4   | Sylvania | CRT | 8XP4.pdf (162029 bytes) | 
    | 8YP4 | RCA (HB3) | CRT | 8YP4.pdf (68867 bytes) | 
    | 8YP4 | Sylvania | CRT | 8YP4.pdf (154941 bytes) |