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1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested
1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested
1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested
1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested
1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested

1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested

$ 15.84

  • Brand: GE
  • Country/Region of Manufacture: United States
  • MPN: 12AU7
  • Model: 5963
  • Type: Preamp Tubes

Description

1963 NOS Matched Pair GE USN-5963 Vacuum Tubes Description from Brent Jessee Recording: 5963: This is a nice industrial type which is nearly identical to the standard 12AU7. The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine. It has a rugged cathode and should be long lived, similar to the 5814. TEST RESULTS: NO SHORTS, NO LEAKAGES, NO GAS Tube 1: Side 1: 82 = 2,050 uMhos Transconductance(Gm) at 4.9 mA (Ia =Anode Plate Current) Side 2: 84 = 2,100 uMhos Transconductance(Gm) at 5.3 mA (Ia =Anode Plate Current) Tube 2: Side 1: 84 = 2,100 uMhos Transconductance(Gm) at 5.1 mA (Ia =Anode Plate Current) Side 2: 82 = 2,050 uMhos Transconductance(Gm) at 5.0 mA (Ia =Anode Plate Current) Date Codes: 63-52 (1963) For Reference: The Minimum good value for a 5963 tube tested on all TV7 versions is 50/50 = 1,250/1,250 uMhos Gm Our Test Set: Dan Nelson restored, upgraded and calibrated, TV7A/U with Digital Meter reading Transconductance in uMhos (Gm) and mA (Anode Plate Current). WE PACK VERY WELL FOR SAFE SHIPPING WORLDWIDE. WE SHIP FAST. MANY YEARS EXPERIENCE SHIPPING FRAGILE TUBES AND VINTAGE ELECTRONICS.