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Pair of 1963 GE 6201 JG-12AT7WA ECC81 12AT7 Dual Support Rods Tubes - TV7 Tested
Pair of 1963 GE 6201 JG-12AT7WA ECC81 12AT7 Dual Support Rods Tubes - TV7 Tested
Pair of 1963 GE 6201 JG-12AT7WA ECC81 12AT7 Dual Support Rods Tubes - TV7 Tested
Pair of 1963 GE 6201 JG-12AT7WA ECC81 12AT7 Dual Support Rods Tubes - TV7 Tested
Pair of 1963 GE 6201 JG-12AT7WA ECC81 12AT7 Dual Support Rods Tubes - TV7 Tested

Pair of 1963 GE 6201 JG-12AT7WA ECC81 12AT7 Dual Support Rods Tubes - TV7 Tested

$ 15.32

  • Brand: GE
  • Country/Region of Manufacture: United States
  • MPN: 6201
  • Model: 12AT7WA
  • Seller Notes: “Tested good and balanced on Dan Nelson Calibrated/Upgraded TV7 Digital Meter Gm & mA”
  • Type: Preamp Tubes
  • UPC: Does not apply
  • gtin13: Does not apply

Description

Strong balanced Pair of 1963 GE 6201 JG-12AT7WA Vacuum Tubes - Date Code: 63-17 - Disc Getters - Dual Support Rods TEST RESULTS: NO SHORTS, NO LEAKAGES, NO GAS Tube 1: Side 1: 87 = 4350 uMhos Transconductance(Gm) at 10.5 mA (Ia =Anode Plate Current) Side 2: 88 = 4400 uMhos Transconductance(Gm) at 10.2 mA (Ia =Anode Plate Current) Tube 2: Side 1: 80 = 4000 uMhos Transconductance(Gm) at 8.9 mA (Ia =Anode Plate Current) Side 2: 84 = 4200 uMhos Transconductance(Gm) at 9.4 mA (Ia =Anode Plate Current) For Reference: The Minimum good value for a 12AT7 tube tested on all TV7 versions is 50/50 = 2,500/2,500 uMhos Gm 'Bogey': Factory Data Sheet NOS when new is 80/80 = 4,000/4,000 (μ℧ ) uMhos Transconductance (Gm) at 3.7/3.7 mA Anode Plate Current Dissipation(+/- 10%) when tested at 100V. NOS is 110/110 = 5,500/5,500 (μ℧ ) uMhos Transconductance (Gm) at 10/10 mA Anode Plate Current Dissipation(+/- 10%) when tested at 250V. All TV7's test at 150V. 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.