If quality control is so poor, how do you test for longevity or robustness?
Just checking the emission when new may have nothing to do with longevity. I'd
like to know how well a Chinese 572B will hold up compared to a Cetron 572B. I
wonder what short cuts the manufacturer has taken in production when many new
ones go out the door with poor emission. What else is wrong with them? Maybe
it's time for these amplifiers to be retrofitted with other type tubes.
Lee, w0vt
----- Original Message -----
There's no doubt that the manufacturer is the problem, but since they are the
only one making them and most Ham's just need a few, a reputable distributer
is very important in the supply chain. He tests them before selling them to be
confident that they worked when they left his facility, that is one of the
reasons he is considered reputable. It costs more, but he must becompensated
for his time. A reputable dealer is paramount in buying a tube you know has a
decent chance of being good, andis the one thing you can do anything
about-choose who you buy from !! Cheers, Matt 73AD7XN
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