Here’s a link to some info about picking a tube tester. This site appears to be current although I heard that Roger had some health problems a while back
http://www.alltubetesters.com/articles/tester_guide.htm
Also if you want to test tubes from the 6DJ8/6922/7308 family you will need a military tester like the TV-7. For some reason many testers can't handle these tubes.
http://www.alltubetesters.com/articles/tester_guide.htm
Also if you want to test tubes from the 6DJ8/6922/7308 family you will need a military tester like the TV-7. For some reason many testers can't handle these tubes.