Hickok 547 Tube tester roll - help
Hi
I recently acquired a US made Hickok 547 tube tester. It is a nice unit that works well, but the settings roll chart is dated 1954, which means that it is not easy to test a lot of the 1950/1960s B7G and B9A tubes. Unlike the 600 series, this particular model seems quite rare and I wonder if anyone can advise whether later updated rolls were made for it? If they were, can someone advise me where to get one or alternatively where the data can be downloaded from the internet to print out and attach to a manual? Thanks Simon |
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