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Due to the numbering schemes in use there are three variant classifications of VTxyz valves; the USA types, the UK military types (VT = Valve, Transmitting), and the UK GPO types. In the cases tabulated below there are more than one valve for a given VT marking. This list was compiled from the CV Register and several other sources. We wish to thank Mr. Jeremy Harmer for his kind permission to allow us to post this list he has very carefully compiled. We also thank the Tube Collectors Association that host the original of this chart, along with the links here to the Virtual Valve Museum. This material is presented free of charge or commercial endorsement or obligation. It is believed to be accurate, but Brent Jessee Recording & Supply, Inc. makes no claims as to it accuracy, and is presented here for your use "as is and as found." Clicking any link on the chart will take you to data and pictures (where available) of the tube listed. This will navigate you away from the audiotubes.com site. To return to this page, click your "back" button, or previous page (return) arrow on your browser.

VT number

Made for/by

CV equivalent



VT1     WE-203A  
VT2     WE-205B  
VT4B     211  
VT4C USA   JAN 211  
VT5     WE-215A  
VT6     212A  
VT7     WX-12  
VT8     UV-04  
VT13B UK      
VT17 GPO CV1608    
USA CV640 860  
VT19 GPO CV1612    
USA CV641 861  
VT20 UK      
VT22     204A  
VT23 UK      
VT24 GPO CV1636    
USA CV2675 864  
VT25 UK CV1025    
GPO CV1637    
USA CV603 10  
VT25A     10 special  
VT26 UK CV1026    
GPO CV1600    
USA   26  
VT27 GPO CV1601    
USA CV604 30  
VT28     24, 24A  
VT29     27  
VT30 UK CV1030    
USA CV750 0-1A  
VT31 UK CV1031    
GPO CV1638    
USA CV947 31  
VT33 GPO CV1642    
USA CV949 33  
VT34 UK CV1034    
GPO CV1614    
USA   207  
VT35 GPO CV1615    
USA CV1752 35/51  
VT36 GPO CV1602    
USA CV1775 36  
VT37     37  
VT38 GPO CV1645    
USA CV712 38  
VT39     869  
VT39A     869A  
VT40 GPO CV1647    
USA CV2501 40  
VT41     851  
VT42     872  
VT42A USA   872A special  
VT43     845  
VT44     32  
VT45     45  
VT46 UK CV1046    
GPO CV1616    
USA (CV32) 866  
VT46A     866A  
VT47 UK CV1047    
GPO CV1603    
USA CV1772 47  
VT48     41  
VT49     39/44  
VT50 UK CV1050    
USA CV2533 50  
VT51 UK CV1051    
GPO CV1617    
USA   841  
VT52 UK CV1052    
GPO (CV1025)    
USA CV596 45 special  
VT53     (VT42A)  
VT54 GPO CV1618    
USA CV1751 34  
VT55     865  
VT56 GPO CV1648    
USA CV611 56  
VT57 GPO CV25    
USA CV612 57  
VT58 UK CV1058    
GPO CV1619    
USA CV613 58  
VT58A UK CV1571    
VT60 UK CV1060    
GPO CV1605    
USA   850  
VT60A UK CV1572    
VT61 UK CV1061    
GPO CV1609    
VT61A UK      
VT62 UK CV1062    
GPO CV1606    
USA CV621 801, 801A  
VT63     46  
VT64 GPO      
VT65 GPO CV1649    
USA CV582 6CG  
VT65A     6C5G  
VT66 GPO CV1650    
USA CV1912 6F6  
VT66A USA CV1186 6F6G  
VT67     30 special  
VT68 GPO CV1651    
USA CV1891 6B7  
VT69 GPO CV1652    
USA CV1900 6D6  
VT70 USA   6F7  
VT72     842  
VT73 UK CV1073    
USA CV639 843  
VT74 UK CV1074    
GPO CV1654    
USA CV1864 5Z4  
VT75 UK CV1075    
GPO CV1655    
USA CV614 75  
VT75A UK   KT44  
VT76 UK CV1076    
USA CV615 76  
VT77 USA   77  
VT78 GPO CV1656    
USA CV2544 78  
VT79 UK CV1079 KT8C  
VT80 UK CV1080    
USA CV617 80  
VT81 UK CV1081    
GPO CV1659    
VT82 GPO CV1660    
VT83 USA   83  
VT84 USA   84 / 6Z4  
VT86 GPO CV1662    
USA CV1942 6K7  
VT86A USA CV1941 6K7G  
VT86B USA   6K7GT  
VT87 GPO CV1663    
USA CV1951 6L7  
VT87A USA   6L7G  
VT88 UK CV1088    
GPO CV1664    
USA CV1963 6R7  
VT88A     6R7G  
VT88B     6R7GT  
VT89 UK CV1089    
GPO CV1665    
USA CV833 89  
VT90 UK CV1090    
GPO CV1732    
USA CV1930 6H6  
VT90A     6H6GT  
VT91 GPO CV1038    
USA CV1936 6J7  
VT91A     6J7GT  
VT92 GPO CV1735    
USA CV588 6Q7  
VT92A     6Q7G  
VT93 UK CV1093    
GPO CV1666    
USA CV1894 6B8  
VT93A     6B8G  
VT94 UK CV1094    
GPO CV1667    
USA CV1933 6J5  
VT94A     6J5G  
VT94B     6J5 specialy selected  
VT94C     6J5G specially selected  
VT94D     6J5GT  
VT95 GPO CV1668    
USA CV1831 2A3  
VT96 UK CV1096    
USA CV1957 6N7  
VT96B     6N7 specially selected  
VT97     5W4  
VT98 UK CV1098 (VT98)  
GPO CV1669    
USA CV504 6U5 / 6G5  
VT98A     (VT98A)  
VT99     6F8G  
VT100 GPO (CV1670)    
USA (CV124) 807  
VT100A     807 modified  
VT101     837  
VT102     cancelled  
VT103     6SQ7  
VT104 UK CV1104 (VT104)  
GPO CV1040    
USA CV546 12SQ7  
VT105 UK CV1105 (VT105)  
GPO CV1673    
USA CV1969 6SC7  
VT106 GPO CV1674 (VT106)  
USA CV623 803  
VT107 GPO CV1675    
USA CV510 6V6  
VT107A     6V6GT(/G)  
VT107B     6V6G  
VT108     450TH  
VT109 GPO CV1677    
USA CV1798 2051  
VT111 GPO CV1679    
USA CV836 5BP4 / 1802P4  
VT112 GPO CV1680    
USA CV660 6AC7 / 1852  
VT114 UK CV1114    
GPO CV1682    
USA CV1846 5T4  
VT115 GPO CV1683 (PO VT115)  
USA CV1948 6L6  
VT115A     6L6G  
VT116 GPO CV1684    
USA CV591 6SJ7  
VT116A     6SJ7GT  
VT116B     6SJ7Y  
VT117     6SK7  
VT117A     6SK7GT  
VT118     832  
VT119 GPO CV1169    
USA (CV597) 2X2 / 879  
VT120 GPO CV1688    
USA (CV1095) 954  
VT121     955  
VT122     530  
VT123     RCA A5586 superceded by VT128  
VT124     1A5GT  
VT125 GPO CV1689    
USA CV1805 1C5GT  
VT126 GPO CV1690    
USA CV573 6X5  
VT126A     6X5G  
VT126B     6X5GT  
VT127 UK CV1127 (VT127)  
GPO (CV1187)    
VT127A GPO   (PO VT127A)  
VT128 GPO CV1692    
USA CV2715 1630  
VT129     304TL  
VT130     250TL  
VT131 GPO CV1168    
USA CV543 12SK7  
VT132     12K8 special  
VT133 GPO CV1695    
USA CV700 12SR7  
VT134     12A6  
VT135     12J5GT  
VT135A     12J5  
VT136 GPO CV1118    
USA CV659 1625  
VT137 GPO CV1081    
USA CV1755 1626  
VT138 GPO CV1623    
USA CV1756 1629  
VT139 GPO CV399    
USA (CV216) VR150/30  
VT140 GPO CV1166    
USA (CV662) 1628  
VT141     531  
VT142     WE-39DY1  
VT143 GPO CV1696    
USA CV625 805  
VT144 GPO CV1371    
USA (CV26) 813  
VT145 GPO CV243    
USA CV1861 5Z3  
VT146 GPO CV1625    
USA CV1823 1N5GT  
VT147 GPO CV1697    
USA CV1802 1A7GT  
VT148 GPO CV1698    
USA CV1811 1D8GT  
VT149     3A8GT  
VT150 GPO CV1699    
USA CV1966 6SA7  
VT150A GPO CV1700    
USA CV1967 6SA7GT  
VT151 GPO CV1701    
USA CV578 6A8G  
VT151B     6A8GT  
VT152 GPO CV1702    
USA CV1940 6K6GT  
VT152A     6K6G  
VT153 GPO CV1703    
USA CV837 12C8 special  
VT154 GPO CV1067    
USA CV629 814  
VT155     special  
VT156     special  
VT158     Zahl tube  
VT158     special  
VT159     special  
VT160     special  
VT161 GPO CV1710    
USA CV537 12SA7  
VT162 GPO CV1711    
USA CV697 12SJ7  
VT163 GPO CV1712    
USA CV1896 6C8G  
VT164 GPO CV1713    
USA CV723 1619  
VT165     1624  
VT166     371A  
VT167 GPO CV1716    
USA CV1945 6K8  
VT167A     6K8G  
VT168A     6Y6G  
VT169 GPO CV1717    
USA CV531 12C8  
VT170 GPO CV1718    
USA CV766 1E5-GP  
VT171 GPO CV1719    
USA CV782 1R5  
VT171A     1R5 (loktal)  
VT172     1S5  
VT173     1T4  
VT174     3S4  
VT175     1613  
VT176     6AB7 / 1853  
VT177 GPO CV1720    
USA CV780 1LH4  
VT178 GPO CV1721    
USA CV778 1LC6  
VT179 GPO CV1722    
USA CV781 1LN5  
VT180 GPO CV1053    
VT181 GPO CV1052    
USA CV1790 7Z4  
VT182 GPO CV1723    
USA CV811 3B7 / 1291  
VT183 GPO CV1724    
USA CV2709 1R4 / 1294  
VT184     VR90/30  
VT185 GPO CV245    
USA CV815 3D6 / 1299  
VT186     special  
VT187     575A  
VT188 GPO CV1727    
USA CV891 7E6  
VT189 GPO CV1128    
USA CV893 7F7  
VT190 GPO CV1728    
USA CV895 7H7  
VT191 GPO CV1628    
USA CV683 316A  
VT192     7A4  
VT193 GPO CV1100    
USA CV1777 7C7  
VT194 GPO CV587    
USA CV897 7J7  
VT195 GPO CV1863    
USA CV2874 1005  
VT196 GPO CV509    
USA (CV574) 6W5G  
VT197A     5Y5GT/G  
VT198A     6G6G  
VT199 GPO CV124    
USA CV1993 6SS7  
VT200 GPO CV1065    
USA CV686 VR105/30  
VT201 GPO CV1056    
USA CV552 25L6  
VT201C     25L6GT  
VT202 GPO CV1054    
USA CV664 9002  
VT203 GPO CV9    
USA CV665 9003  
VT204 GPO CV18    
USA CV789 HK-24G  
VT205 GPO CV1630    
USA CV1996 6ST7  
VT206A     5V4G  
VT207 GPO CV1091    
USA CV529 12AH7GT  
VT208     7B8  
VT209     12SG7  
VT210     1S4  
VT211   CV1978 6SG7  
VT212     958  
VT213A     6L5G  
VT214     12H6  
VT215     6E5  
VT216     816  
VT217     811  
VT218     100TH  
VT220     250TH  
VT221     3Q5GT  
VT222     884  
VT223     1H5GT  
VT224   CV18 RK-34  
VT225     307A  
VT226     3EP1 / 1806P1  
VT227     7184  
VT228     8012  
VT229     6SL7GT  
VT230     350A  
VT231     6SN7GT  
VT232   CV6 E1148  
VT233     6SR7  
VT234     HT-114B  
VT235     HY-615  
VT236     836  
VT237     957  
VT238     956  
VT239     1LE3  
VT240     710A  
VT241     7E5 / 1201  
VT243     7C4 / 1203A  
VT244     5U4G  
VT245     2050  
VT246     918  
VT247     6AG7  
VT248     1808P1  
VT249     1006  
VT250     EF50  
VT251     441  
VT252     923  
VT254     304TH  
VT255     705A  
VT256     ZP486  
VT257     K-7  
VT259     829  
VT260     VR75/30  
VT264     3Q4  
VT266     1616  
VT267     578  
VT268     12SC7  
VT269     717A  
VT277     417  
VT279     GY-2  
VT280     C7063  
VT281     HY-145ZT  
VT282     ZG489  
VT283     QF-206  
VT284     QF-197  
VT285     QF-200C  
VT286     832A  
VT287     815  
VT288     12SH7  
VT289     12SL7GT  
VT501 UK CV1501   Beam tetrode


This file was last modified 04:23:43, Wednesday January 16, 2013