Seven Mullard M8137/CV4004 Military ruggedised versions of 12AX7 removed from redundant test equipment. These has been tested on my American TV-7B/U tube tester with the following results. Minimum servicable reading. I have numbered the tubes for identification purposes. Test results are as folllows No.206.....36 and 36 N0.207....34 and 36. No212....34 and 34. No.205....36 and 38. No.203....32 and 36. No.209....36 and 38. No.211....34 and 34. (Valves/tubes mullard M8137 military versions of ECC83 was posted and is owned by: Kristina Lindsey) |
Kristina.lindsey@chicagopartsnetwork.com (Kristina Lindsey)
for more information.