"arizona cowboy" cacheoverflowATyahoo.com wrote in
:

OK... I figure if you're lucky enough to FIND a ST70 on the street
(!), you should make up for your incredible good fortune by getting
on eBay and buying half decent tester. If you're going to be "into"
tubes, you'll need one in the end anyrate. Nothin' too hi-end
required, just one to find the bad tubes and give you a rough idea
how "tired" they are.

I am going to have to politely disagree with your "Nothin' too hi-end
required" statement. At any given time there are around 220 tube
testers for sale on ebay, and 200 or so are basically just toys
(emissions testers) - A Hickok 533 or TV-7A/U is about the lowest cost
of the real tube testers, if he is not ready to spend at least $200
for a mutual conductance tester (and another $100+ for a proper
calibration) then he is just ****ing in the wind with anything less.
He might as well stick with an $8 ohm meter from Home Depot.


wild bill
knoxville
world's largest seller of TV-7 series tube testers




OK.. that reminds me.. you're going to need an $8 ohm-meter too.