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THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)
THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)

THREE (3), 1953/56/64 TV7 Tested Strong, GE GL-807 807 Power Tubes (Tube Roll)

$ 17.41

  • Brand: GE
  • Country/Region of Manufacture: United States
  • Model: GL-807 807
  • Seller Notes: “Calibrated TV7 RE-TESTED as Lightly Used-Strong Gm and mA (FULL RESULTS IN DESC)”
  • Type: Bean Power Vacuum Tube

Description

Calibrated TV7 Tested Strong, THREE Tubes (3) GE (2) GL-807 (1) 807 with Red-Brown Base Tubes Dated: 1953 "3 - 43", 1956 "6 -04", 'RT'=Nov 1964 All 3 have a internal Differences : Tube 1: 1953 "3-43", "188-5" GL-807: Dark Gray Plates 6 holes, 2x Bottom Large 'D' Horseshoe Getters, Bottom Flashing Tube 2: 1956 "6-04", "188-6" GL-807 : Black Plates 6 holes, 2 Top-side Wings, 2x Bottom Large 'D' Horseshoe Getters w/ Metal Strip on each 'D', Bottom Flashing. T ube 3: Nov 1964 Date code 'RT' GE 807 : Gray Plates w/ 12 holes, 2x Bottom Large 'D' Horseshoe Getters, Bottom Flashing Condition: Lightly Used -OPENED the BOXES to RE-TEST them on a Dan Nelson Rebuilt, Upgraded & Calibrated (11/11/2011) TV7A/U with Digital meter. All 3 tested Strong against the GE Factory data sheet Specs. Strong for Transconductance (Gm) & mA (Anode Plate Current Dissipation) given Tubes were tested at only Plate Supply Voltage of 150VDC. ** Please see ALL PICS for test results and the GE GL-807 Factory Data Sheet Specs. Preview the Graphs to see the Gm and mA results give that that these tubes were test at only 150VDC Plate supply voltage **** Note: All Versions of TV7's test at a Maximum of 150VDC Plate Supply Voltage and 135VDC maximum Grid Voltage. Calibrated TV7 Test results: NO Shorts, NO Leakage, NO Gas, No Micro-phonics detected (Minimum good on a TV7 meter reads = 48 = 2,400 uMhos Gm) (for Class AB1 Audio Amplifier - 2 tubes in Push-Pull) Tube 1: Dated '6-04' 1956 : (Gm) 80.3/48 = 4,015 uMhos at 30.8 mA Anode Plate Current dissipation w/Zero signal Tube 2: Dated '3-43' 1953 : (Gm) 74.9/48 = 3,745 uMhos at 27.0 mA Anode Plate Current dissipation Tube 3: Dated 'RT' 1964 : (Gm) 78.5/48 = 3,925 uMhos at 28.3 mA Anode Plate Current dissipation Our test set : Recent Dan Nelson calibrated (11/11/2021), restored and upgraded TV7 with Digital Meter reading Transconductance in uMhos (Gm) and mA (Anode Plate Current). Both Tubes tested Matched and Strong for Gm and mA for tube type : GE GL-807 807 'Bogey' : Average GE / RCA / Westinghouse NOS Factory when new - listed in all 3 the ( GE,RCA & Westinghouse) Factory Data sheets for the 807 tube type states 'Typical Operation and Characteristics' for 'Class A1 Audio (AF) Amplifier ' when tested : at Plate Supply Voltage 400+Volts : Transconductance (Gm) = 6,000 uMhos at 72.0 mA Plate Current ( S = 6,0 mA/V la= 64 mA Ib = 72 mA ) WE PACK VERY WELL AND SHIP VERY FAST (one day or same day) Low cost Shipping USPS 1st class, Low cost International shipping via eBay International Economy small package Service space available AIR-FREIGHT (allow 10days to 6weeks for delivery depending upon which World region box is delivered to). The America's and Europe are fast. ASIA 2nd fastest. Austrialia /NZ / Pacific Islands about 3-4weeks delivery. West Asia/Middle East allow 6weeks.