I repaired and calibrated this Hickok 600A Tube Tester. I installed a new 8-pin Octal and 9-pin miniature socket savers. The case has normal wear for a tube tester of
I repaired and calibrated this Hickok 600A Tube Tester. I installed a new 8-pin Octal and 9-pin miniature socket savers. The case has normal wear for a tube tester of