| Electron tube Type | Brand | System | Data sheet | 
    | 6N13S 6  13     | Soviet | TT | 6N13S.pdf (73199 bytes) | 
    | 6N14P 6  14   | Soviet | tt | 6N14P.pdf (83297 bytes) | 
    | 6N14P 6  14   | Soviet | tt | 6N14P.pdf (136337 bytes) | 
    | 6N15P 6  15         | Soviet | tt | 6N15P.pdf (91282 bytes) | 
    | 6N16B 6  16   | Soviet | tt | 6N16B.pdf (109052 bytes) | 
    | 6N17B 6  17   | Soviet | tt | 6N17B.pdf (106885 bytes) | 
    | 6N1P | Svetlana | tt | 6N1Pspec.pdf (38608 bytes) | 
    | 6N1PEV 6  1     | Soviet | tt | 6N1PEV.pdf (106610 bytes) | 
    | 6N1PVI 6  1     | Soviet | tt | 6N1PVI.pdf (237900 bytes) | 
    | 6N1P 6  1   | Soviet | tt | 6N1P.pdf (254749 bytes) | 
    | 6N1P 6  1   | Soviet | tt | 6N1P.pdf (136788 bytes) | 
    | 6N1 | Shuguang | tt | 6N1.pdf (180256 bytes) (zh) | 
    | 6N21B 6  21   | Soviet | tt | 6N21B.pdf (76753 bytes) | 
    | 6N23PEV 6  23     | Soviet | tt | 6N23PEV.pdf (348460 bytes) | 
    | 6N23P 6  23   | Soviet | tt | 6N23P.pdf (377581 bytes) | 
    | 6N24P 6  24   | Soviet | tt | 6N24P.pdf (69092 bytes) | 
    | 6N27P 6  27   | Soviet | tt | 6N27P.pdf (296354 bytes) | 
    | 6N2PEV 6  2     | Soviet | tt | 6N2PEV.pdf (245006 bytes) | 
    | 6N2P 6  2   | Soviet | tt | 6N2P.pdf (107000 bytes) | 
    | 6N2 | Shuguang | tt | 6N2.pdf (172934 bytes) (zh) | 
    | 6N3 | Rogers | r | 6N3.pdf (114505 bytes) | 
    | 6N3PE 6  3    | Soviet | tt | 6N3PE.pdf (147458 bytes) | 
    | 6N3PI 6  3    | Soviet | tt | 6N3PI.pdf (177714 bytes) | 
    | 6N3P 6  3     | Soviet | tt | 6N3P.pdf (103935 bytes) | 
    | 6N4 | Tung-Sol | t | 6N4.pdf (59371 bytes) | 
    | 6N5 | RCA (HB3) | ti | 6AB5.pdf (85710 bytes) | 
    | 6N5 | Sylvania | ti | 6N5.pdf (55397 bytes) (fr) | 
    | 6N5 (= 6AB5) | Tung-Sol | ti | 6AB5.pdf (80951 bytes) | 
    | 6N5 | NU | ti | 6N5.pdf (20986 bytes) | 
    | 6N5P 6  5   | Soviet | tt | 6N5P.pdf (94756 bytes) | 
    | 6N5P | Shuguang | TT | 6N5P.pdf (117271 bytes) (zh) | 
    | 6N6 | Ken-Rad | tT | 6N6.pdf (62998 bytes) | 
    | 6N6G | RCA (HB3) | tt | 6N6G.pdf (40424 bytes) | 
    | 6N6G | Sylvania | tt | 6N6G.pdf (110175 bytes) | 
    | 6N6G | Sylvania | tt | 6N6G.pdf (20432 bytes) (fr) | 
    | 6N6G | Tung-Sol | tt | 6N6G.pdf (70074 bytes) | 
    | 6N6MG | Triad | tt | 6N6MG.pdf (204886 bytes) | 
    | 6N6PI 6  6    | Soviet | tt | 6N6PI.pdf (183956 bytes) | 
    | 6N6PI 6  6    | Soviet | tt | 6N6PI.pdf (78456 bytes) | 
    | 6N6P 6  6   | Soviet | TT | 6N6P.pdf (142269 bytes) | 
    | 6N7 | RCA | TT | 6N7.pdf (78887 bytes) | 
    | 6N7 | RCA (HB3) | TT | 6N7.pdf (149383 bytes) | 
    | 6N7 | RFT | TT | 6N7.pdf (86617 bytes) (de) | 
    | 6N7 | General Electric | TT | 6N7.pdf (267626 bytes) | 
    | 6N7 | Sylvania | TT | 6N7.pdf (24222 bytes) (fr) | 
    | 6N7 | Tung-Sol | TT | 6N7.pdf (102497 bytes) | 
    | 6N7G | RCA (HB3) | TT | 6N7.pdf (149383 bytes) | 
    | 6N7G | Sylvania | TT | 6N7.pdf (24222 bytes) (fr) | 
    | 6N7G | Tung-Sol | TT | 6N7.pdf (102497 bytes) | 
    | 6N7G | Brimar | TT | 6N7G.pdf (54642 bytes) | 
    | 6N7GT | RCA (HB3) | TT | 6N7.pdf (149383 bytes) | 
    | 6N7GT   | Tung-Sol | TT | 6N7.pdf (102497 bytes) | 
    | 6N7GT | Brimar | TT | 6N7G.pdf (54642 bytes) | 
    | 6N7P | Shuguang | tt | 6N7P.pdf (194257 bytes) (zh) | 
    | 6N7S 6  7   | Soviet | tt | 6N7S.pdf (97183 bytes) | 
    | 6N8 (= EBF80) | Mazda-Belvu | ddp | EBF80.pdf (455701 bytes) (fr) | 
    | 6N8 (= EBF80) | RFT | ddp | EBF80.pdf (136652 bytes) (de) | 
    | 6N8 (= EBF80) | Brimar | ddp | EBF80.pdf (63136 bytes) | 
    | 6N8 | Philips | ddp | 6N8.pdf (329236 bytes) | 
    | 6N8P | Shuguang | tt | 6N8P.pdf (194673 bytes) (zh) | 
    | 6N8S 6  8   | Soviet | tt | 6N8S.pdf (102777 bytes) | 
    | 6N9P | Shuguang | tt | 6N9P.pdf (193635 bytes) (zh) | 
    | 6N9S 6  9   | Soviet | tt | 6N9S.pdf (94066 bytes) | 
    | 6NO45T | Amperex | REL | 6NO45T.pdf (422033 bytes) | 
    | 6P13P | Shuguang | P | 6P13P.pdf (145351 bytes) (zh) | 
    | 6P13S 6  13   | Soviet | P | 6P13S.pdf (94982 bytes) | 
    | 6P14P 6  14     | Soviet | P | 6P14P.pdf (175995 bytes) | 
    | 6P15P 6  15   | Soviet | P | 6P15P.pdf (218688 bytes) | 
    | 6P17 | AEI | P | 6P17.pdf (108469 bytes) | 
    | 6P18P 6  18   | Soviet | P | 6P18P.pdf (168270 bytes) | 
    | 6P1PEV 6  1     | Soviet | P | 6P1PEV.pdf (91617 bytes) | 
    | 6P1P 6  1     | Soviet | P | 6P1P.pdf (127251 bytes) | 
    | 6P1 | Shuguang | P | 6P1.pdf (126320 bytes) (zh) | 
    | 6P20S 6  20   | Soviet | P | 6P20S.pdf (81528 bytes) | 
    | 6P25   | Mazda | P | 6P25.pdf (76840 bytes) | 
    | 6P27S 6  27   | Soviet | P | 6P27S.pdf (1804794 bytes) (ru) | 
    | 6P30B 6  30   | Soviet | P | 6P30B.pdf (101498 bytes) | 
    | 6P31S 6  31   | Soviet | P | 6P31S.pdf (86018 bytes) | 
    | 6P36S 6  36   | Soviet | P | 6P36S.pdf (109328 bytes) | 
    | 6P3P | Shuguang | P | 6P3P.pdf (152928 bytes) (zh) | 
    | 6P3SE 6  3    | Soviet | P | 6P3S-E.pdf (63229 bytes) | 
    | 6P3S 6  3   | Soviet | P | 6P3S.pdf (46807 bytes) | 
    | 6P5G | RCA (HB3) | t | 6P5G.pdf (39122 bytes) | 
    | 6P5G | Sylvania | t | 6P5G.pdf (20101 bytes) (fr) | 
    | 6P5G | Tung-Sol | t | 6P5GT.pdf (103345 bytes) | 
    | 6P5G | Triad | t | 6P5G.pdf (28632 bytes) | 
    | 6P5GT | RCA (HB3) | t | 6P5G.pdf (39122 bytes) | 
    | 6P5GT | Tung-Sol | t | 6P5GT.pdf (103345 bytes) | 
    | 6P5GT | Ken-Rad | t | 6P5GT.pdf (33012 bytes) | 
    | 6P6 | AWV |  | 6P6.pdf (53326 bytes) | 
    | 6P6P | Shuguang | P | 6P6P.pdf (192017 bytes) (zh) | 
    | 6P6S 6  6   | Soviet | P | 6P6S.pdf (470037 bytes) (bg) | 
    | 6P6S 6  6     | Soviet | P | 6P6S.pdf (94364 bytes) | 
    | 6P7G | RCA (HB3) | tp | 6P7G.pdf (30983 bytes) | 
    | 6P7G | Sylvania | tp | 6P7G.pdf (25042 bytes) (fr) | 
    | 6P8G | STC/Brimar | th | 6P8G.pdf (33736 bytes) | 
    | 6P9 (= 6BM5) | Mazda-Belvu | P | 6BM5.pdf (408583 bytes) (fr) | 
    | 6P9P | Shuguang | P | 6P9P.pdf (198205 bytes) (zh) | 
    | 6P9 6  9 | Soviet | P | 6P9.pdf (154961 bytes) | 
    | 6Q11  (= 6K11) | RCA (HB3) | ttt | 6K11.pdf (131155 bytes) | 
    | 6Q11 | Tung-Sol | ttt | 6Q11.pdf (81130 bytes) | 
    | 6Q4 (= EC80) | Philips | t | EC80.pdf (140549 bytes) | 
    | 6Q5G | Du Mont | t° | 2B4.pdf (79126 bytes) | 
    | 6Q6G | Sylvania | dt | 6Q6G.pdf (39725 bytes) | 
    | 6Q7 | RCA | ddt | 6Q7.pdf (39400 bytes) | 
    | 6Q7 | RCA (HB3) | ddt | 6Q7.pdf (171390 bytes) | 
    | 6Q7 | Sylvania | ddt | 6Q7.pdf (68367 bytes) (fr) | 
    | 6Q7 | Tung-Sol | ddt | 6Q7.pdf (123623 bytes) | 
    | 6Q7G | RCA (HB3) | ddt | 6Q7.pdf (171390 bytes) | 
    | 6Q7G | Sylvania | ddt | 6Q7.pdf (68367 bytes) (fr) | 
    | 6Q7G | Tung-Sol | ddt | 6Q7.pdf (123623 bytes) | 
    | 6Q7G | Brimar | ddt | 6N7G.pdf (54642 bytes) | 
    | 6Q7GT | RCA (HB3) | ddt | 6Q7.pdf (171390 bytes) | 
    | 6Q7GT | Sylvania | ddt | 6J7GT.pdf (111793 bytes) (fr) | 
    | 6Q7GT | Tung-Sol | ddt | 6Q7.pdf (123623 bytes) | 
    | 6Q7GT | Brimar | ddt | 6N7G.pdf (54642 bytes) | 
    | 6Q7GT | Hytron | ddt | 6Q7GT.pdf (68395 bytes) | 
    | 6R-HH2 | Hitachi | tt | 6R-HH2.pdf (80659 bytes) (jp) | 
    | 6R-HH2 | Hitachi | tt | 6R-HH2.pdf (92264 bytes) | 
    | 6R-HH8 (= 6KN8) | Hitachi | tt | 4KN8.pdf (133612 bytes) | 
    | 6R-P10 | Hitachi | P | 6R-P10.pdf (44548 bytes) | 
    | 6R3 | Rogers | R | 6R3.pdf (97847 bytes) | 
    | 6R4 (= EC81) | Philips | t | EC81.pdf (336712 bytes) | 
    | 6R6G | Arcturus | p | 6R6G.pdf (54782 bytes) | 
    | 6R7 | RCA | ddt | 6R7.pdf (39103 bytes) | 
    | 6R7 | RCA (HB3) | ddt | 6R7.pdf (101439 bytes) | 
    | 6R7 | Sylvania | ddt | 6R7.pdf (55907 bytes) (fr) | 
    | 6R7 | Tung-Sol | ddt | 6R7.pdf (116121 bytes) | 
    | 6R7G | RCA (HB3) | ddt | 6R7.pdf (101439 bytes) | 
    | 6R7G | Sylvania | ddt | 6R7.pdf (55907 bytes) (fr) | 
    | 6R7G | Tung-Sol | ddt | 6R7.pdf (116121 bytes) | 
    | 6R7G | Brimar | ddt | 6R7G.pdf (51092 bytes) | 
    | 6R7GT | RCA (HB3) | ddt | 6R7.pdf (101439 bytes) | 
    | 6R7GT | Tung-Sol | ddt | 6R7.pdf (116121 bytes) | 
    | 6R7GT | Hytron | ddt | 6R7GT.pdf (26632 bytes) | 
    | 6R8 | Tung-Sol | dddt | 6R8.pdf (113864 bytes) | 
    | 6RK19 | RCA (RC30) | R | 6BN11.pdf (549900 bytes) | 
    | 6RK19 (= 6BR3) | Toshiba | R | 6BR3.pdf (90838 bytes) | 
    | 6S17KV 6  17    | Soviet | t | 6S17KV.pdf (116220 bytes) | 
    | 6S19P 6  19       | Soviet | T | 6S19P.pdf (76635 bytes) | 
    | 6S1P 6  1   | Soviet | t | 6S1P.pdf (68741 bytes) | 
    | 6S1Z 6  1   | Soviet | t | 6S1Z.pdf (68018 bytes) | 
    | 6S2 | Rogers | R | 6S2.pdf (161429 bytes) | 
    | 6S20S 6  20   | Soviet | T | 6S20S.pdf (66518 bytes) | 
    | 6S21D 6  21   | Soviet | t~ | 6S21D.pdf (43942 bytes) | 
    | 6S2A | Rogers | R | 6S2A.pdf (22576 bytes) | 
    | 6S2P 6  2     | Soviet | t | 6S2P.pdf (65432 bytes) | 
    | 6S2S 6  2   | Soviet | t | 6S2S.pdf (28978 bytes) | 
    | 6S2S 6  2   | Soviet | t | 6S2S.pdf (58727 bytes) | 
    | 6S31B 6  31   | Soviet | t | 6S31B.pdf (76638 bytes) | 
    | 6S32B 6  32   | Soviet | t | 6S32B.pdf (80241 bytes) | 
    | 6S33SV 6  33    | Electronintorg | T | 6S33SV.pdf (222505 bytes) | 
    | 6S33S 6  33     | Electronintorg | T | 6S33S.pdf (222115 bytes) | 
    | 6S33S 6  33     | Soviet | T | 6S33S.pdf (106698 bytes) | 
    | 6S3PEV 6  3     | Soviet | t | 6S3PEV.pdf (205392 bytes) | 
    | 6S3PE 6  3    | Soviet | t | 6S3PE.pdf (85423 bytes) | 
    | 6S4 | Tung-Sol | T | 6S4.pdf (102979 bytes) | 
    | 6S40P 6  40   | Soviet | T | 6S40P.pdf (155140 bytes) | 
    | 6S41S 6  41     | Electronintorg | T | 6S41S.pdf (160320 bytes) | 
    | 6S45PE 6  45    | Soviet | t | 6S45PE.pdf (118155 bytes) | 
    | 6S4A | RCA (HB3) | T | 6S4A.pdf (118078 bytes) | 
    | 6S4A | General Electric | T | 6S4A.pdf (384206 bytes) | 
    | 6S4A | Tung-Sol | T | 6S4A.pdf (116153 bytes) | 
    | 6S4A | RCA (RC30) | T | 6S4A.pdf (108423 bytes) | 
    | 6S4PEV 6  4     | Soviet | t | 6S4PEV.pdf (198390 bytes) | 
    | 6S4S 6  4   | Soviet | T | 6S4S.pdf (64633 bytes) | 
    | 6S5 | Rogers | ti | 6S5.pdf (25436 bytes) | 
    | 6S5DI 6  5    | Soviet | t~ | 6S5DI.pdf (56028 bytes) | 
    | 6S5D 6  5   | Soviet | t~ | 6S5D.pdf (71032 bytes) | 
    | 6S62N 6  62   | Soviet | t | 6S62N.pdf (83537 bytes) | 
    | 6S6GT | Ken-Rad | p | 6S6GT.pdf (123006 bytes) | 
    | 6S7   | RCA (HB3) | p | 6S7.pdf (111401 bytes) | 
    | 6S7 | Tung-Sol | p | 6S7.pdf (50978 bytes) | 
    | 6S7 | RCA | p | 6S7.pdf (141794 bytes) | 
    | 6S7B 6  7   | Soviet | t | 6S7B.pdf (94279 bytes) | 
    | 6S7G | RCA (HB3) | p | 6S7.pdf (111401 bytes) | 
    | 6S7G | Sylvania | p | 6S7G.pdf (30844 bytes) (fr) | 
    | 6S7G | Tung-Sol | p | 6S7G.pdf (120710 bytes) | 
    | 6S7G | Sylvania | p | 6S7G.pdf (33753 bytes) | 
    | 6S8GT | RCA (HB3) | dddt | 6S8GT.pdf (159068 bytes) | 
    | 6S8GT | Tung-Sol | dddt | 6S8GT.pdf (129599 bytes) | 
    | 6S8S 6  8   | Soviet | t~ | 6S8S.pdf (55483 bytes) | 
    | 6S9D 6  9   | Soviet | t | 6S9D.pdf (64632 bytes) | 
    | 6SA7 | RCA (HB3) | H | 6SA7.pdf (322709 bytes) | 
    | 6SA7 | RFT | H | 6SA7.pdf (88784 bytes) (de) | 
    | 6SA7 | General Electric | H | 6SA7.pdf (278619 bytes) | 
    | 6SA7 | Sylvania | H | 6SA7.pdf (83250 bytes) (fr) | 
    | 6SA7 | Tung-Sol | H | 6SA7.pdf (268756 bytes) | 
    | 6SA7 | RCA | H | 6SA7.pdf (125413 bytes) | 
    | 6SA7G | RCA (HB3) | H | 6SA7.pdf (322709 bytes) | 
    | 6SA7GT   | RCA (HB3) | H | 6SA7.pdf (322709 bytes) | 
    | 6SA7GT | Tung-Sol | H | 6SA7.pdf (268756 bytes) | 
    | 6SB7Y   | RCA (HB3) | H | 6SB7Y.pdf (305942 bytes) | 
    | 6SB7Y | Tung-Sol | H | 6SB7Y.pdf (253124 bytes) | 
    | 6SC7 | General Electric | tt | 6SC7.pdf (375711 bytes) | 
    | 6SC7 | Sylvania | tt | 6SA7.pdf (83250 bytes) (fr) | 
    | 6SC7 | Tung-Sol | tt | 6SC7.pdf (75116 bytes) | 
    | 6SC7 | RCA | tt | 6SC7.pdf (96544 bytes) | 
    | 6SC7GT | Tung-Sol | tt | 6SC7.pdf (75116 bytes) | 
    | 6SC7GT | Brimar | tt | 6R7G.pdf (51092 bytes) | 
    | 6SD7GT | Tung-Sol | p | 6SD7GT.pdf (58488 bytes) | 
    | 6SE7GT | Hytron | p | 6SE7GT.pdf (60174 bytes) | 
    | 6SF5 | RCA (HB3) | t | 6SF5.pdf (110464 bytes) | 
    | 6SF5 | Sylvania | t | 6SA7.pdf (83250 bytes) (fr) | 
    | 6SF5 | Tung-Sol | t | 6SF5.pdf (93280 bytes) | 
    | 6SF5 | RCA | t | 6SF5.pdf (64867 bytes) | 
    | 6SF5GT | RCA (HB3) | t | 6SF5.pdf (110464 bytes) | 
    | 6SF5GT   | Tung-Sol | t | 6SF5.pdf (93280 bytes) | 
    | 6SF7     | RCA (HB3) | dp | 6SF7.pdf (191219 bytes) | 
    | 6SF7 | Tung-Sol | dp | 6SF7.pdf (137329 bytes) | 
    | 6SF7GT | AWV |  | 6SF7GT.pdf (44109 bytes) | 
    | 6SG7 | General Electric | p | 6SG7.pdf (235942 bytes) | 
    | 6SG7 | Tung-Sol | p | 6SG7.pdf (205487 bytes) | 
    | 6SG7GT | Tung-Sol | p | 6SG7.pdf (205487 bytes) | 
    | 6SH7 | RFT | p | 6SH7.pdf (77094 bytes) (de) | 
    | 6SH7 | General Electric | p | 6SH7.pdf (302998 bytes) | 
    | 6SH7GT | Tung-Sol | p | 6SH7GT.pdf (47909 bytes) | 
    | 6SH7L | Tung-Sol | p | 6SH7L.pdf (58923 bytes) | 
    | 6SJ7 | RCA (HB3) | p | 6SJ7.pdf (417464 bytes) | 
    | 6SJ7 | RFT | p | 6SJ7.pdf (85644 bytes) (de) | 
    | 6SJ7 | General Electric | p | 6SJ7.pdf (444253 bytes) | 
    | 6SJ7 | Sylvania | p | 6SA7.pdf (83250 bytes) (fr) | 
    | 6SJ7 | Tung-Sol | p | 6SJ7.pdf (128081 bytes) | 
    | 6SJ7 | RCA | p | 6SJ7-6SK7.pdf (394014 bytes) | 
    | 6SJ7GT   | RCA (HB3) | p | 6SJ7.pdf (417464 bytes) | 
    | 6SJ7GT | Tung-Sol | p | 6SJ7.pdf (128081 bytes) | 
    | 6SK7 | RCA (HB3) | p | 6SK7.pdf (185044 bytes) | 
    | 6SK7 | RFT | p | 6SK7.pdf (75398 bytes) (de) | 
    | 6SK7 | General Electric | p | 6SK7.pdf (349513 bytes) | 
    | 6SK7 | Sylvania | p | 6SA7.pdf (83250 bytes) (fr) | 
    | 6SK7 | Tung-Sol | p | 6SK7.pdf (216406 bytes) | 
    | 6SK7 | RCA | p | 6SJ7-6SK7.pdf (394014 bytes) | 
    | 6SK7G | RCA (HB3) | p | 6SK7.pdf (185044 bytes) | 
    | 6SK7GT | RCA (HB3) | p | 6SK7.pdf (185044 bytes) | 
    | 6SK7GT   | Tung-Sol | p | 6SK7.pdf (216406 bytes) | 
    | 6SL7 | RFT | tt | 6SL7.pdf (71264 bytes) (de) | 
    | 6SL7GT   | RCA (HB3) | tt | 6SL7GT.pdf (144524 bytes) | 
    | 6SL7GT   | General Electric | tt | 6SL7GT.pdf (367256 bytes) | 
    | 6SL7GT   | Tung-Sol | tt | 6SL7GT.pdf (131131 bytes) | 
    | 6SL7GT | Brimar | tt | 6SL7GT.pdf (96942 bytes) | 
    | 6SL7GT   | RCA (RC30) | tt | 6S4A.pdf (108423 bytes) | 
    | 6SL7WGT | Tung-Sol | tt | 6SL7WGT.pdf (159238 bytes) | 
    | 6SL7WGT   | Sylvania | tt | 6SL7WGT.pdf (306821 bytes) | 
    | 6SN7 | RFT | tt | 6SN7.pdf (66065 bytes) (de) | 
    | 6SN7GT | Tung-Sol | tt | 6SN7GT.pdf (133934 bytes) | 
    | 6SN7GT | Sylvania | tt | 6SN7GT.pdf (407316 bytes) | 
    | 6SN7GT | Brimar | tt | 6SN7GT.pdf (104549 bytes) | 
    | 6SN7GTA | RCA (HB3) | tt | 6SN7GTA.pdf (294351 bytes) | 
    | 6SN7GTA   | General Electric | tt | 6SN7GTB.pdf (479306 bytes) | 
    | 6SN7GTA | Tung-Sol | tt | 6SN7GTA.pdf (221413 bytes) | 
    | 6SN7GTA   | Sylvania | tt | 6SN7GTA.pdf (397641 bytes) | 
    | 6SN7GTB         | RCA (HB3) | tt | 6SN7GTB.pdf (16518 bytes) | 
    | 6SN7GTB           | General Electric | tt | 6SN7GTB.pdf (479306 bytes) | 
    | 6SN7GTB | Tung-Sol | tt | 6SN7GTB.pdf (262500 bytes) | 
    | 6SN7GTB | Sylvania | tt | 6SN7GTA.pdf (397641 bytes) | 
    | 6SN7GTB         | RCA (RC30) | tt | 6SN7GTB.pdf (333220 bytes) | 
    | 6SN7WGT | Raytheon | tt | 6SN7WGT.pdf (468712 bytes) | 
    | 6SN7WGTA   | Tung-Sol | tt | 6SN7WGTA.pdf (309503 bytes) | 
    | 6SN7WGTA   | Tung-Sol | tt | 6SN7WGTA.pdf (301961 bytes) | 
    | 6SQ7 | RCA (HB3) | ddt | 6SQ7.pdf (202861 bytes) | 
    | 6SQ7 | RFT | ddt | 6SQ7.pdf (78329 bytes) (de) | 
    | 6SQ7 | General Electric | ddt | 6SQ7.pdf (321892 bytes) | 
    | 6SQ7 | Sylvania | ddt | 6SA7.pdf (83250 bytes) (fr) | 
    | 6SQ7 | Tung-Sol | ddt | 6SQ7.pdf (245274 bytes) | 
    | 6SQ7 | RCA | ddt | 6SQ7.pdf (96813 bytes) | 
    | 6SQ7G | RCA (HB3) | ddt | 6SQ7.pdf (202861 bytes) | 
    | 6SQ7G | ChampionRadioTube | ddt | 6SQ7G.pdf (31803 bytes) | 
    | 6SQ7GT   | RCA (HB3) | ddt | 6SQ7.pdf (202861 bytes) | 
    | 6SQ7GT | Tung-Sol | ddt | 6SQ7.pdf (245274 bytes) | 
    | 6SR7   | RCA (HB3) | ddt | 6SR7.pdf (117291 bytes) | 
    | 6SR7 | Tung-Sol | ddt | 6SR7.pdf (109091 bytes) | 
    | 6SR7GT | Tung-Sol | ddt | 6SR7.pdf (109091 bytes) | 
    | 6SS7 | RCA (HB3) | p | 6SS7.pdf (105876 bytes) | 
    | 6SS7 | Tung-Sol | p | 6SS7.pdf (105537 bytes) | 
    | 6SS7GT | Tung-Sol | p | 6SS7.pdf (105537 bytes) | 
    | 6ST7 | RCA | ddt | 6ST7.pdf (30416 bytes) | 
    | 6SU7GTY   | Tung-Sol | tt | 6SU7GTY.pdf (80899 bytes) | 
    | 6SU7WGT (= 6188)   | Tung-Sol | tt | 6188.pdf (227902 bytes) | 
    | 6SU7WGT (= 6188)   | Tung-Sol | tt | 6188.pdf (328523 bytes) | 
    | 6SV7 | Tung-Sol | dp | 6SV7.pdf (164359 bytes) | 
    | 6SZ7 | RCA (HB3) | ddt | 6SZ7.pdf (123276 bytes) | 
    | 6SZ7 | Tung-Sol | ddt | 6SZ7.pdf (120986 bytes) | 
    | 6T10   | General Electric | pP | 6T10.pdf (897162 bytes) | 
    | 6T10 | RCA (RC30) | pP | 6SN7GTB.pdf (333220 bytes) | 
    | 6T4   | Sylvania | t | 6T4.pdf (117816 bytes) | 
    | 6T4   | Sylvania | t | 6T4.pdf (356146 bytes) | 
    | 6T5 | Sylvania | ti | 6T5.pdf (41475 bytes) | 
    | 6T6GM | Rogers | p | 6T6GM.pdf (48811 bytes) | 
    | 6T7G | RCA (HB3) | ddt | 6T7G.pdf (117215 bytes) | 
    | 6T7G | Sylvania | ddt | 6T7G.pdf (41394 bytes) (fr) | 
    | 6T7G | Tung-Sol | ddt | 6T7G.pdf (165562 bytes) | 
    | 6T8 | General Electric | dddt | 6T8.pdf (398222 bytes) | 
    | 6T8 | Tung-Sol | dddt | 6T8.pdf (168627 bytes) | 
    | 6T8 | Brimar | dddt | 6T8.pdf (40454 bytes) | 
    | 6T8A | RCA (HB3) | dddt | 6T8A.pdf (279806 bytes) | 
    | 6T8A   | General Electric | dddt | 6T8A.pdf (49566 bytes) | 
    | 6T8A | Tung-Sol | dddt | 6T8A.pdf (237788 bytes) | 
    | 6T8A | RCA (RC30) | dddt | 6SN7GTB.pdf (333220 bytes) | 
    | 6T9 | RCA | tP | 6T9.pdf (329815 bytes) | 
    | 6T9 | GE | tP | 6T9.pdf (84556 bytes) | 
    | 6TE8GT | FIVRE | th | 6TE8GT.pdf (238324 bytes) (it) | 
    | 6TO3A | Cintel | CRR | 6TO3A.pdf (99588 bytes) | 
    | 6U10 | RCA | ttt | 6U10.pdf (333890 bytes) | 
    | 6U10 | General Electric | ttt | 6U10.pdf (618595 bytes) | 
    | 6U10 | RCA (RC30) | ttt | 6SN7GTB.pdf (333220 bytes) | 
    | 6U3 | Philips | R | 6U3.pdf (91190 bytes) | 
    | 6U4GT | Tung-Sol | R | 6U4GT.pdf (81331 bytes) | 
    | 6U4GT | Brimar | R | 6U4GT.pdf (39095 bytes) | 
    | 6U5 | RCA (HB3) | ti | 6U5.pdf (101234 bytes) | 
    | 6U5   | Sylvania | ti | 6U5.pdf (55750 bytes) (fr) | 
    | 6U5 | Tung-Sol | ti | 6U5.pdf (106800 bytes) | 
    | 6U5 | Brimar | ti | 6U5.pdf (59394 bytes) | 
    | 6U5 | Raytheon | ti | 6U5-6G5.pdf (87117 bytes) | 
    | 6U5G | Brimar | ti | 6U5.pdf (59394 bytes) | 
    | 6U6GT | Tung-Sol | P | 6U6GT.pdf (115815 bytes) | 
    | 6U7G | RCA (HB3) | p | 6U7G.pdf (225600 bytes) | 
    | 6U7G | Sylvania | p | 6U7G.pdf (32910 bytes) (fr) | 
    | 6U7G | Tung-Sol | p | 6U7G.pdf (238997 bytes) | 
    | 6U7G | Brimar | p | 6U5.pdf (59394 bytes) | 
    | 6U7G | Raytheon | p | 6U7G.pdf (37506 bytes) | 
    | 6U8 | Mazda-Belvu | tp | 6U8.pdf (107947 bytes) (fr) | 
    | 6U8 (= ECF82) | RFT | tp | ECF82.pdf (140998 bytes) (de) | 
    | 6U8 | Tung-Sol | tp | 6U8.pdf (81375 bytes) | 
    | 6U8 | Mullard | tp | 6U8.pdf (124995 bytes) | 
    | 6U8A | RCA (HB3) | tp | 6U8A.pdf (310536 bytes) | 
    | 6U8A   | General Electric | tp | 6U8A.pdf (631341 bytes) | 
    | 6U8A | Tung-Sol | tp | 6U8A.pdf (300594 bytes) | 
    | 6U8A | RCA (RC30) | tp | 6SN7GTB.pdf (333220 bytes) | 
    | 6V2P 6  2   | Soviet | SET | 6V2P.pdf (149112 bytes) | 
    | 6V3 | Sylvania | R | 6V3.pdf (85429 bytes) | 
    | 6V3A | RCA (HB3) | R | 6V3A.pdf (69906 bytes) | 
    | 6V3A | Tung-Sol | R | 6V3A.pdf (50284 bytes) | 
    | 6V3A | Sylvania | R | 6V3A.pdf (157560 bytes) | 
    | 6V4 (= EZ80) | Mazda-Belvu | rr | EZ80.pdf (363756 bytes) (fr) | 
    | 6V4 (= EZ80) | Brimar | rr | EZ80.pdf (55357 bytes) | 
    | 6V5GT | NU | P | 6V5GT.pdf (45820 bytes) | 
    | 6V6 | RCA (HB3) | P | 6V6.pdf (34131 bytes) | 
    | 6V6 | RFT | P | 6V6.pdf (101315 bytes) (de) | 
    | 6V6 | Sylvania | P | 6V6.pdf (127614 bytes) (fr) | 
    | 6V6 | Tung-Sol | P | 6V6.pdf (177785 bytes) | 
    | 6V6 | RCA (RC30) | P | 6V6.pdf (565224 bytes) | 
    | 6V6 | RCA | P | 6V6.pdf (41797 bytes) | 
    | 6V6G | Sylvania | P | 6V6.pdf (127614 bytes) (fr) | 
    | 6V6G | Tung-Sol | P | 6V6.pdf (177785 bytes) | 
    | 6V6G | Brimar | P | 6V6G.pdf (57555 bytes) | 
    | 6V6GT | Mazda-Belvu | P | 6V6GT.pdf (171814 bytes) (fr) | 
    | 6V6GT | RCA (HB3) | P | 6V6.pdf (34131 bytes) | 
    | 6V6GT | AWV | P | 6V6GT.pdf (585729 bytes) | 
    | 6V6GT | General Electric | P | 6V6GT.pdf (643545 bytes) | 
    | 6V6GT | Tung-Sol | P | 6V6.pdf (177785 bytes) | 
    | 6V6GT | Brimar | P | 6V6G.pdf (57555 bytes) | 
    | 6V6GTA | RCA (HB3) | P | 6V6GTA.pdf (225328 bytes) | 
    | 6V6GTA | Tung-Sol | P | 6V6GTA.pdf (218227 bytes) | 
    | 6V6GTA | General Electric | P | 6V6GTA.pdf (469981 bytes) | 
    | 6V6GTA | RCA (RC30) | P | 6V6.pdf (565224 bytes) | 
    | 6V6S     | JJ | P | 6V6S.pdf (161482 bytes) | 
    | 6V7G | RCA (HB3) | ddt | 6V7G.pdf (29422 bytes) | 
    | 6V7G | Sylvania | ddt | 6V7G.pdf (22343 bytes) (fr) | 
    | 6V7G | Tung-Sol | ddt | 6V7G.pdf (129702 bytes) | 
    | 6V7G | Raytheon | ddt | 6V7G.pdf (33764 bytes) | 
    | 6V8 | Tung-Sol | dddt | 6V8.pdf (60821 bytes) | 
    | 6VS1 6   1 | Soviet | tbd | 6VS1.pdf (456290 bytes) | 
    | 6W2 | ElectronicTubesLtd | R | 6W2.pdf (62931 bytes) | 
    | 6W4GT | RCA (HB3) | R | 6W4GT.pdf (63470 bytes) | 
    | 6W4GT | General Electric | R | 6W4GT.pdf (168492 bytes) | 
    | 6W4GT | Tung-Sol | R | 6W4GT.pdf (106441 bytes) | 
    | 6W4GTA | General Electric | R | 6W4GTA.pdf (182407 bytes) | 
    | 6W5G | Ken-Rad | rr | 6W5G.pdf (22201 bytes) | 
    | 6W6GT | RCA (HB3) | P | 6W6GT.pdf (219613 bytes) | 
    | 6W6GT | General Electric | P | 6W6GT.pdf (599369 bytes) | 
    | 6W6GT | Tung-Sol | P | 6W6GT.pdf (286302 bytes) | 
    | 6W6GT | RCA (RC30) | P | 6V6.pdf (565224 bytes) | 
    | 6W6GT | Hytron | P | 6W6GT.pdf (149596 bytes) | 
    | 6W7G | RCA (HB3) | p | 6W7G.pdf (44118 bytes) | 
    | 6W7G | Sylvania | p | 6W7G.pdf (48105 bytes) (fr) | 
    | 6W7G | Tung-Sol | p | 6W7G.pdf (118157 bytes) | 
    | 6W7G | Sylvania | p | 6W7G.pdf (37835 bytes) | 
    | 6X2 (= EY51) | RFT | R | EY51.pdf (65299 bytes) (de) | 
    | 6X2 | Philips | R | 6X2.pdf (135633 bytes) | 
    | 6X4 (= 6BX4) | Mazda-Belvu | rr | 6BX4.pdf (68439 bytes) (fr) | 
    | 6X4 | RCA (HB3) | rr | 6X4.pdf (486681 bytes) | 
    | 6X4 | General Electric | rr | 6X4.pdf (551501 bytes) | 
    | 6X4 | Tung-Sol | rr | 6X4.pdf (145671 bytes) | 
    | 6X4 | Sylvania | rr | 6X4.pdf (376421 bytes) | 
    | 6X4 | Brimar | rr | 6X4.pdf (47067 bytes) | 
    | 6X4 | RCA (RC30) | rr | 6V6.pdf (565224 bytes) | 
    | 6X4W | Tung-Sol | rr | 6X4W.pdf (212768 bytes) | 
    | 6X4W | Tung-Sol | rr | 6X4W.pdf (209669 bytes) | 
    | 6X4W | Raytheon | rr | 6X4W.pdf (394389 bytes) | 
    | 6X4WA | Tung-Sol | rr | 6X4WA.pdf (498668 bytes) | 
    | 6X4WS | Mazda-Belvu | rr | 6X4WS.pdf (130478 bytes) (fr) | 
    | 6X5 | RCA | rr | 6X5.pdf (39050 bytes) | 
    | 6X5 | RCA (HB3) | rr | 6X5.pdf (121702 bytes) | 
    | 6X5 | RFT | rr | 6X5.pdf (65514 bytes) (de) | 
    | 6X5 | Sylvania | rr | 6X5.pdf (131688 bytes) (fr) | 
    | 6X5 | Tung-Sol | rr | 6X5.pdf (103302 bytes) | 
    | 6X5G | RCA (HB3) | rr | 6X5.pdf (121702 bytes) | 
    | 6X5G | Sylvania | rr | 6X5.pdf (131688 bytes) (fr) | 
    | 6X5G | Tung-Sol | rr | 6X5.pdf (103302 bytes) | 
    | 6X5G | Brimar | rr | 6X5G.pdf (54304 bytes) | 
    | 6X5GT       | RCA (HB3) | rr | 6X5.pdf (121702 bytes) | 
    | 6X5GT | General Electric | rr | 6X5GT.pdf (228145 bytes) | 
    | 6X5GT         | Sylvania | rr | 6J7GT.pdf (111793 bytes) (fr) | 
    | 6X5GT   | Tung-Sol | rr | 6X5GT.pdf (199311 bytes) | 
    | 6X5GT | Brimar | rr | 6X5G.pdf (54304 bytes) | 
    | 6X5GT       | RCA (RC30) | rr | 6V6.pdf (565224 bytes) | 
    | 6X5GT | Hytron | rr | 6X5GT.pdf (392331 bytes) | 
    | 6X5WGT | Tung-Sol | rr | 6X5WGT.pdf (75712 bytes) | 
    | 6X5WGT     | Raytheon | rr | 6X5WGT.pdf (177604 bytes) | 
    | 6X6G | Rogers | ti | 6X6G.pdf (65927 bytes) | 
    | 6X8 | RCA (HB3) | tp | 6X8.pdf (271284 bytes) | 
    | 6X8 | General Electric | tp | 6X8.pdf (755679 bytes) | 
    | 6X8 | Tung-Sol | tp | 6X8.pdf (307380 bytes) | 
    | 6X8A | Tung-Sol | tp | 6X8.pdf (307380 bytes) | 
    | 6X8A | RCA (RC30) | tp | 6V6.pdf (565224 bytes) | 
    | 6X9 | RCA (RC30) | tp | 6V6.pdf (565224 bytes) | 
    | 6Y10 | Tung-Sol | pP | 6Y10.pdf (108476 bytes) | 
    | 6Y3G | Philco | R° | 6Y3G.pdf (42601 bytes) | 
    | 6Y5 | RCA (HB3) | rr | 6Y5.pdf (25829 bytes) | 
    | 6Y5 | Tung-Sol | rr | 6Y5.pdf (31404 bytes) | 
    | 6Y50 | Tesla | R | 6Y50.pdf (298341 bytes) (cs) | 
    | 6Y6G | Sylvania | P | 6Y6G.pdf (50183 bytes) (fr) | 
    | 6Y6G | Tung-Sol | P | 6Y6G.pdf (117238 bytes) | 
    | 6Y6G | RCA (RC30) | P | 6V6.pdf (565224 bytes) | 
    | 6Y6G | Raytheon | P | 6Y6G.pdf (68529 bytes) | 
    | 6Y6GA | RCA (HB3) | P | 6Y6GA.pdf (79743 bytes) | 
    | 6Y6GA | Tung-Sol | P | 6Y6GA.pdf (118342 bytes) | 
    | 6Y6GA | Sylvania | P | 6Y6GA.pdf (320573 bytes) | 
    | 6Y6GA | RCA (RC30) | P | 6V6.pdf (565224 bytes) | 
    | 6Y6GT   | General Electric | P | 6Y6GT.pdf (396995 bytes) | 
    | 6Y7G | RCA (HB3) | TT | 6Y7G.pdf (27850 bytes) | 
    | 6Y7G   | Sylvania | TT | 6Y7G.pdf (26158 bytes) (fr) | 
    | 6Y7G | Tung-Sol | TT | 6Y7G.pdf (51131 bytes) | 
    | 6Y7G | Sylvania | TT | 6Y7G.pdf (37179 bytes) | 
    | 6Y9 | RCA (RC30) | pP | 6V6.pdf (565224 bytes) | 
    | 6Z10 | RCA (HB3) | pP | 6Z10.pdf (108228 bytes) | 
    | 6Z10 | General Electric | pP | 6Z10.pdf (511301 bytes) | 
    | 6Z10 | RCA (RC30) | pP | 6Z10.pdf (115623 bytes) | 
    | 6Z10P 6  10   | Soviet | p | 6Z10P.pdf (275948 bytes) | 
    | 6Z11PE 6  11    | Soviet | p | 6Z11PE.pdf (211671 bytes) | 
    | 6Z1PEV 6  1     | Soviet | p | 6Z1PEV.pdf (270793 bytes) | 
    | 6Z1P 6  1   | Soviet | p | 6Z1P.pdf (248787 bytes) | 
    | 6Z2PEV 6  2     | Soviet | p | 6Z2PEV.pdf (216915 bytes) | 
    | 6Z2P 6  2     | Soviet | p | 6Z2P.pdf (201648 bytes) | 
    | 6Z31 | Tesla | rr | 6Z31.pdf (142889 bytes) (cs) | 
    | 6Z32P 6  32   | Soviet | p | 6Z32P.pdf (247060 bytes) | 
    | 6Z38P 6  38   | Soviet | p | 6Z38P.pdf (319328 bytes) | 
    | 6Z3P 6  3   | Soviet | p | 6Z3P.pdf (173542 bytes) | 
    | 6Z4 (= 84) | Sylvania | rr | 83V.pdf (95293 bytes) | 
    | 6Z4   | Sylvania | rr | 84.pdf (79204 bytes) (fr) | 
    | 6Z43PE 6  43    | Soviet | p | 6Z43PE.pdf (201030 bytes) | 
    | 6Z49PDR 6  49     | Soviet | p | 6Z49PDR.pdf (246869 bytes) | 
    | 6Z49PD 6  49    | Soviet | p | 6Z49PD.pdf (164537 bytes) | 
    | 6Z4P 6  4   | Soviet | p | 6Z4P.pdf (234295 bytes) | 
    | 6Z4 | Shuguang | rr | 6Z4.pdf (99258 bytes) (zh) | 
    | 6Z5 | RCA (HB3) | rr | 6Z5.pdf (28352 bytes) | 
    | 6Z5 | Tung-Sol | rr | 6Z5.pdf (35258 bytes) | 
    | 6Z51P 6  51   | Soviet | p | 6Z51P.pdf (256326 bytes) | 
    | 6Z52P 6  52   | Soviet | p | 6Z52P.pdf (178703 bytes) | 
    | 6Z53P 6  53   | Soviet | p | 6Z53P.pdf (164205 bytes) | 
    | 6Z5P 6  5   | Soviet | p | 6Z5P.pdf (276152 bytes) | 
    | 6Z5P | Shuguang | rr | 6Z5P.pdf (113763 bytes) (zh) | 
    | 6Z7G     | RCA (HB3) | TT | 6Z7G.pdf (109706 bytes) | 
    | 6Z7G | Sylvania | TT | 6Z7G.pdf (46173 bytes) (fr) | 
    | 6Z7G | Tung-Sol | TT | 6Z7G.pdf (50135 bytes) | 
    | 6Z7G | Raytheon | TT | 6Z7G.pdf (26530 bytes) | 
    | 6Z9PE 6  9    | Soviet | p | 6Z9PE.pdf (190449 bytes) | 
    | 6Z9P 6  9     | Soviet | p | 6Z9P.pdf (233095 bytes) | 
    | 6ZY5G | Sylvania | rr | 6ZY5G.pdf (54903 bytes) (fr) | 
    | 6ZY5G | Tung-Sol | rr | 6ZY5G.pdf (97304 bytes) | 
    | 6ZY5G | Sylvania | rr | 6ZY5G.pdf (36628 bytes) |