01-01-2006, 08:01 PM
It may be possible to find a conversion chart for your Heath tester. They were made for newer tubes and, as with many testers, there may not be a chart that takes you back that far.
The best thing is to get a better (more expensive) tester that takes in the older tubes. All this, if you're really serious about radio work. I use a Hickok 539C tester, and it has a special book that goes back to "obsolete types" into the era of the 20s and 30s. With all of the tube types that came along, it's amazing that any tester can cover as much as many of them do.
The best thing is to get a better (more expensive) tester that takes in the older tubes. All this, if you're really serious about radio work. I use a Hickok 539C tester, and it has a special book that goes back to "obsolete types" into the era of the 20s and 30s. With all of the tube types that came along, it's amazing that any tester can cover as much as many of them do.
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