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 Universal Tube Tester

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johnbackscheider



Posts : 2
Join date : 2010-10-15

PostSubject: Universal Tube Tester   Fri Oct 15, 2010 5:34 pm

Recently acquired Universal Tube Tester Model 502. Seeking information from any member who might have operational or schematic information on this tester. Thank you - John Backscheider, Fairfield OH
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Jim Berg



Posts : 17
Join date : 2010-10-13

PostSubject: Re: Universal Tube Tester   Sat Oct 16, 2010 8:40 am

I have a model 501 that I have had for about 35 years. No manual or schematic, just the tube chart in lid. Does yours have this? I could copy mine if needed. Also I would not mind a copy of your chart also. You can PM me.
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johnbackscheider



Posts : 2
Join date : 2010-10-15

PostSubject: Re: Universal Tube Tester   Sun Oct 17, 2010 7:49 am

Thanks Jim. Mine has a rolling scroll type chart with settings but I am unable to find a sequence that tests correctly when compared to my Dynajet. The 502 has an internal battery connection but no battery. Does yours? Is the battery necessary for correct operation?
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Jim Berg



Posts : 17
Join date : 2010-10-13

PostSubject: Re: Universal Tube Tester   Sun Oct 17, 2010 8:53 am

I think mine was made in Ohio? Yours sounds different than mine. Batteries were used on pretty old set testers, but have not seen one on a AC power tube tester. Mine has no roll chart. Oldest tester I have is a counter top Weston from about 1935. Not sure the year of my Universal, but the chart has some of the AA5 tubes settings handwritten in.
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