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Mint Calibrated Stark 12-22A Mutual Conductance Vacuum Tube Tester Hickok Tester, US $418 – Picture 0
Mint Calibrated Stark 12-22A Mutual Conductance Vacuum Tube Tester Hickok Tester, US $418 – Picture 1
Mint Calibrated Stark 12-22A Mutual Conductance Vacuum Tube Tester Hickok Tester, US $418 – Picture 2
Mint Calibrated Stark 12-22A Mutual Conductance Vacuum Tube Tester Hickok Tester, US $418 – Picture 0
Mint Calibrated Stark 12-22A Mutual Conductance Vacuum Tube Tester Hickok Tester, US $418 – Picture 1
Mint Calibrated Stark 12-22A Mutual Conductance Vacuum Tube Tester Hickok Tester, US $418 – Picture 2

Mint Calibrated Stark 12-22a Mutual Conductance Vacuum Tube Tester Hickok Tester

US $418

  • Keene, New Hampshire, United States
  • Mar 7th
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 This calibrated Stark Model 12-22A Dynamic Mutual Conductance Tube Tester is probably the hardest vacuum tube tester to find. It tests both European and American Vacuum Tubes along with Selenium Rectifiers, Transistors and Diodes. Stark was the Canadian subsiduary of Hickok and made electrically identical tube testers, using the Hickok circuits, but with a somewhat different appearance, and a lot wider range of sockets. The quality is second to none. The bias pots etc. feel very healthy. Function switches look and feel great. Both are somewhat bigger than their hickok counterparts, to allow for the extra sockets. A Stark 12-22A Users Manual, Calibration instructions and a Hickok Consolidated Test Data Manual is Included. Both the Hickok 533A and the Stark 12-22A use the same 2.5 Screen Voltage so they share the same Tube Testing Data. Resisters and Capacitors were checked and replaced as necessary. The 83 Mercury Filled Rectifier Tube has been replaced with a perfectly balanced solid state replacement. The 5Y3 tested new and balanced. This tube cannot be replaced with a solid state replacement without loosing accuracy. Calibration double checked with 6L6 and 6sx7 Calibrating Tubes. Then Tripled checked matching tubes on a Calibrated Hickok 533A
Condition:
Seller refurbished: An item that has been restored to working order by the eBay seller or a third party not approved by the manufacturer. This means the item has been inspected, cleaned, and repaired to full working order and is in excellent condition. This item may or may not be in original packaging. See the seller’s listing for full details. ...
Brand Stark
Country/Region of Manufacture Canada
Model 12-22A

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