Tube tester: Orange VT 1000
I used to pull tubes from every item in the house just to take them down to the Thrifty Drug Store and test them. I probably ruined more tubes than I realized - it drove my Dad nuts. Drug store testers were "service tube testers" and only performed cathode emissions testing, which is really only good for telling you if a tube is good or bad, in a vague way. If you are going to collect more than a few NOS or used tubes then you are going to want to use a mutual conductance tester. I won't get into which tester to select because I don't want to write a book and also there are guys on this forum who know a hell of a lot more about this than I do. |
Here are some good reads I have found on the subject. http://www.tungsol.com/html/faqs7.html http://www.alltubetesters.com/articles/howto_test_tubes.htm http://www.alltubetesters.com/articles/tester_guide.htm http://amplitrex.com/ http://www.maximatcher.com/ |
