Scott Dorsey wrote:

Those testers are basically useless, though, since all they do is detect
one sort of tube failure, they can't detect any of the others. The ones
you used to see in supermarkets and drug stores tended to be calibrated
such that new tubes would test marginal, also, in an attempt to increase
sales...

That only worked until people started testing the new tubes before they
bought them.

Geoff.


--
Geoffrey S. Mendelson, N3OWJ/4X1GM
My high blood pressure medicine reduces my midichlorian count. :-(