3x 1950s TV7 Test Strong SYLVANIA JAN CHS 807 VT-100-A Tubes for Hallicrafter

$49.95 Buy It Now or Best Offer
free,30-Day Returns

Seller Store jimcochran
(1114) 100.0%,

Location: Miami, Florida
Ships to: US,
Item: 305025551147

Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
SYLVANIA:SYLVANIA
Type:Beam Power Vacuum Tube Mil-Spec VT-100A 807
JAN CHS VT-100-A VT-100A Military Industrial Version of 807 tube:JAN CHS VT-100-A VT-100A Military Industrial Version of 807 tube
Country/Region of Manufacture:United States
Unit Quantity:3

Quantity Three (3) Vacuum Tubes , Calibrated TV7 Tested Strong for Gm and mA – All 3 Made in the USA in the 1950’s by SYLVANIA with Tube Type : JAN CHS 807 VT-100-A supplied to Hallicrafter (as stated on the Original Boxes). All 3 have same internal/external construction. – Black Plates with 6 holes-Two Large Bottom-Sides Solid Metal Horseshoe ‘D’ Getters. Bottom Flashing.- Thick support rods, 2 Mica Spacers/Wafers- Brown bases- The JAN CHS 807 VT-100-A is a longer life rugged Mil-Spec’ed Industrial tube version of the 807 tube. 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 against Sylvania Factory Specs and Strong for Transconductance (Gm) & mA (Anode Plate Current Dissipation) given all 3 were tested at only Plate Supply Voltage of 150VDC.All 3 with Clean Pins and Top caps, Ready for Plug-in and Play condition. ** Please see ALL PICS for test results and the Sylvania 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. TV7 Test results: NO Shorts, NO Leakage, NO Gas, No Micro-phonics detectedMinimum good on a TV7 meter reads = 48 = 2,400 uMhos GmWhen tested on a TV7 at 150VDC Plate Supply Voltage an average Factory NOS tube should test at or above80=4,000 uMhos Gm at 30.0 mA Plate current dissipation. Tube 1: 76.7/48 = 3,817.5 uMhos at 30.3 mA Anode Plate Current (95% ave NOS)Tube 2: 80.2/48 = 4,005.0 uMhos at 31.8 mA Anode Plate Current (100% ave NOS)Tube 3: 80.8/48 = 4,020.0 uMhos at 33.1 mA Anode Plate Current (100% ave NOS) 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). All 3 Tubes tested Matched and Strong for Gm and mA for tube type : Sylvania 807 ‘Bogey’ : Average Sylvania NOS Factory when new – listed in the Sylvania 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.

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