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a good tube tester?
a good tube tester?
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Old 10th January 2010, 06:47 PM   #1
trigger is offline trigger  United States
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Default a good tube tester?

looking to buy a tube tester, for general propose of testing tubes for resale, a wide variety is a must.

budget 50-80$ just looking for some recommendations?
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Old 10th January 2010, 07:45 PM   #2
Bob_345 is offline Bob_345  United States
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tube depot has one for $89

http://www.tubedepot.com/tt-it-17.html
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Old 10th January 2010, 10:52 PM   #3
ethermion is offline ethermion  Antarctica
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Quote:
Originally Posted by trigger View Post
looking to buy a tube tester, for general propose of testing tubes for resale, a wide variety is a must.

budget 50-80$ just looking for some recommendations?
Ya know, Ebay has been both a blessing and a curse to this hobby.

Maybe it is just me, but I can't stop laughing.
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Old 10th January 2010, 11:29 PM   #4
Glowbug is offline Glowbug  United States
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Quote:
Originally Posted by trigger View Post
looking to buy a tube tester, for general propose of testing tubes for resale, a wide variety is a must.

budget 50-80$ just looking for some recommendations?
For that price you can't be too picky

There's an Eico on Ebay for that much now, but with shipping you're likely going to pay more than that.

Quote:
Ya know, Ebay has been both a blessing and a curse to this hobby.

Maybe it is just me, but I can't stop laughing.
Be nice
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Old 11th January 2010, 12:30 AM   #5
Bob, W7ETA is offline Bob, W7ETA  United States
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propose of testing tubes for resale

There are many times I skip buying small signal tubes from someone because the tube tester they use does little more than checking to see if the tube is dead.

For output tubes, if the tester doesn't come close to loading the tube, the reading doesn't mean much.

Best from Tucson
Bob
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Old 11th January 2010, 12:52 AM   #6
TheGimp is offline TheGimp  United States
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I recommend you do a LOT of research on tube testers, how they work, what they can do, what they can't do, etc before you buy one.

Emission testers just test to see if the filaments heat up and cause emission from cathode to anode. They test to see if the tube will act as a diode and give some arbitrary measure of how well they conduct.

Mutual Conductance (gM) testers are better, but depending on model and make can vary from junk to good (if you understand what it is actually testing).

Matching of tubes with most tube testers is bogus at best and an outright lie at worst.

Save your money for now and do a bunch of studying if you expect to spend your money wisely.
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Old 11th January 2010, 01:18 AM   #7
HollowState is offline HollowState  United States
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The Gimp is right-on correct. Heed his words if at all possible. Anyone who is willing to buy tested used tubes will want them tested on a quality name brand and model tube tester. This means a mutual conductance tester like Hickoks and their Military counterparts, B&K Precision and several others. Eighty dollars will only buy you an emission tester unless you are very, very lucky or can find a non-working Hickok and fix it up youirself. And even they go for a lot of money.
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Old 11th January 2010, 01:33 AM   #8
DHT112A is offline DHT112A  United States
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For $80.00 keep your money. You would only be throwing it away unless you get extremely lucky.
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Old 11th January 2010, 01:56 AM   #9
boywonder is offline boywonder  United States
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Here is a good overview of popular testers:

Tales From The Tone Lounge; The Idiot's Guide To TubeTesters!
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Old 11th January 2010, 05:44 PM   #10
jrenkin is offline jrenkin  United States
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Sometimes a good old fashioned electronics store, if you can find a real one, will have a tester available for use. saves buying, just requires schlepping and maybe a few purchases for good will.
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