-40%
1950s RCA 12BY7A (12DQ7 12BV7) Tube - Hickok 539B tests @ 9800, Min:5700
1950s RCA 12BY7A (12DQ7 12BV7) Tube - Hickok 539B tests @ 9800, Min:5700
1950s RCA 12BY7A (12DQ7 12BV7) Tube - Hickok 539B tests @ 9800, Min:5700
1950s RCA 12BY7A (12DQ7 12BV7) Tube - Hickok 539B tests @ 9800, Min:5700

1950s RCA 12BY7A (12DQ7 12BV7) Tube - Hickok 539B tests @ 9800, Min:5700

$ 10.01

  • Brand: RCA
  • Country/Region of Manufacture: United States
  • Manufacturer (original): RCA
  • Model: 12BY7A (12DQ7 12BV7)
  • Type: Vacuum Tube

Description

*Fantastic Tubes 🎷 🎶 * One tube, circa 1950s , U.S.A. made by RCA, type 12BY7A vacuum tube as pictured. <<<<<<< As pictured = The tube you see is the tube you get! >>>>>>> Condition: New Old Stock / New In Box Silk-Screening: Please see the photos Acid Etched Designation: 12BY7A Date Code: JQU Tube features a top -mounted 'Horseshoe' shape getter construction. * Thoroughly tested on Hickok 539B * for short (pass) , gas (pass) and mutual conductance (Gm) . Test Result (Gm) 9800 µMhos minimum recommended(Gm) for a good tube: 5700 * Hickok 539B is a mutual conductance (Gm) type tube tester. It does check for mutual conductance which is a more accurate measure of tube's age. Satisfaction Guaranteed! *Fantastic Tubes !!! 🎷 🎶