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Old 20th February 2006, 02:41 PM   #1
Trout is offline Trout  United States
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Question Tube Tester Data

Hi,
Yesterday at a public auction I picked up a really nice condition Mercury Model 2000 Mutual Conductance Tube tester.

Thumbing through the 56 page tube chart, I noticed many tubes listed have no "Rated Gm Micromhos" Data.

I have tested several brand new J&J 6BQ5/EL84's and the Rated Gm of 11000 matches the listing in the tube chart,
But It really leaves me in the dark on tubes like 6L6 that have no Gm listed.

Is there a way of determining this based on the manufacture Tube data?
Needless to say chart updates are not exactly easy to locate.
Trout
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Old 20th February 2006, 02:43 PM   #2
anatech is offline anatech  Canada
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Hi Gene,
If the Mercury values agree with other gm listings, then download for a Hickok or the like. The switch settings won't be useful, but you can fill out the gm table.

-Chris
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Old 20th February 2006, 02:51 PM   #3
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11300 is the data sheet value for transconductance for teh 6BQ5 - so the tube tester must have an operating point that gives a similar value... though it's VERY unlikley that it is the data sheet operating point. But as a start, you can use the tube data sheets (and maybe a few NOS examples) for test values.
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Old 20th February 2006, 03:44 PM   #4
Trout is offline Trout  United States
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WAY Cool!

This tester is much better than my other ones, The only drawback being it has no 4 or 5 pin sockets

But I use mostly 7-8 & 9 pin stuff anyway.

Welp, Now I am off looking for hickok data lol
Trout
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Old 16th August 2007, 08:04 AM   #5
artm is offline artm  United States
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I recently picked up a Mercury 2000 without a manual or tube chart.

Any chance you can help me out? I would also make these available to others on several tube sites.
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Old 16th August 2007, 09:58 PM   #6
d2134 is offline d2134  Romania
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Mercury Model-2000 Mutal Conductance Tube Tester instruction manual PDF file on CD

ebay
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Old 17th August 2007, 06:06 AM   #7
Cobra2 is offline Cobra2  Norway
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I have the Merc 2000 data & manual on pdf... (~4 mb)

e-mail me!

Arne K
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Don't believe everything you think...
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Old 17th August 2007, 06:50 AM   #8
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Hi trout ,

Mercury sold tube testers for a short time .

The Model 2000 is from the year 1967 , when
the unit price was US$ 99.95 .

The Mercury models 1000 , 1200 and 2000 use
the SAME STANDARD Hickock circuit , then
you have to get any Hickock data-sheet , anyway .
Anatech is correct .

SOURCE : Tube Testers and Classic Electronic
Test Gear by ALAN DOUGLAS .

Regards ,

Carlos
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Old 17th August 2007, 07:51 AM   #9
artm is offline artm  United States
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It's the data sheet that I need.
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Old 17th August 2007, 04:06 PM   #10
artm is offline artm  United States
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Quote:
Originally posted by Cobra2
I have the Merc 2000 data & manual on pdf... (~4 mb)

e-mail me!

Arne K

Arne, I am still a new member and cannot emails others on this board. This is the only board I'm on that does this. Pathetic!

At any rate you may email me: a m j a s AT e a r t h l i n k . n e t


Thank you very much!
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