That tester will not do much to sort the sheep from the goats, NOS is a condition rather than a measurable state. Theres an argument that you are better off with lightly used tubes anyway as they will not suffer the plate degradation as their getters have been more active mopping the stray gasses up before the damage gets done.Originally Posted by Jimbo
You are certainly right there Marco. Might have to invest in some more so have enough NOS valves to see me out.
Can,t go back to some of those new production valves as the difference is simply too great.
One small thing that troubles me is getting hold of NOS valves that have never been used. There are too many circulating that have had many hours on them.
Might have to invest in a tube tester such as the one below
http://www.gak.co.uk/en/orange-vt100...FUTnwgodcYsAdQ
Agree about the Teslas, and the good news is that Peter at Edicron has stocks of them, very nice tubes.
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