B&K 747B Mutual Conductance Tube Tester for sale. This is one of B&K’s best late-model testers, capable of testing a wide range of tubes with precision. Compact and easy to
Month: August 2025
Restored and Calibrated Hickok 539B Tube Tester For SaleRestored and Calibrated Hickok 539B Tube Tester For Sale
Restored and calibrated Hickok 539B tube tester, fully functional with smooth operation and accurate readings. Available for sale.