1x TV7D/U Test NOS/NIB GE USA branded ‘NL’ 6AQ5A 6GH5 EL90 ‘Smoked Glass’
Specifications
| 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 |
| Model | 6AQ5A 6GH5 EL90 |
| Country/Region Of Manufacture | United States |
| Type | Vacuum Tube |
This Ebay Sales is for 1x= ONE VINTAGE VACUUM TUBE / VALVE / LAMP / Röhre Please Preview all Pics as they are part of the Detailed Description. Condition: Calibrated TV7D/U Tested at NOS 'Bogie' Specs levels(Given in this Description below), Clean Glass and Pins, Plug in and Play Condition. In Original 1954 Mil-Spec contract box supplied under contract to Sperry Gyroscopic. UNUSED/NOS/NIB tube.*READ FULL DESCRIPTION BELOW* Tube/Valve Model: (Etched GE global Logo on Glass) GE USA branded NL (National Electronics) 6AQ5A 6GH5 EL90 'Gray Plates covered by Dark Smoked Glass' with Top Angled "Boxed" "D" Getter. Calibrated TV7D/U Test Results (Tested at 150VDC): No Shorts, No Gas, No LeakageTested at NOS 'Bogey' levels for Transconductance (Gm) and mA (Anode Plate Current) TV7 meter reads 89/(46=min Good), 89= 4,450 micromhos Transconductance (Gm) at 29.7 mA Plate Current. Minimum 60-65% Tube Life = 46 = 2,300 Gm TESTING DETAILS:Tested on a Professionally fully Calibrated (8/2019) and upgraded and enhansed Military TV7 A/U to TV7D/U with Plate Current (mA) testing jacks installed by Bud Allen at CG Industries of Florida. Calibration valid 10,000 hours of service until next calibration. We use the Industry standard TV7 Lookup data charts by the late great Nolan Lee to convert TV7 meter # to micromhos (Gm) transconductance. REFERENCE ( 'Bogie' Specs' ): from Engineering Data Sheet for RCA brand of 6AQ5 EL90 Tube/Valve (Dated 11-58 ): (change dot to '.' in the links below) frank.pocnet dot net/sheets/049/6/6AQ5A dot pdf RCA 'Bogie' Spec(from Link above) = Industry Average Typical Operating Characteristics of a New 6AQ5 tube reading : TV7 meter reading range of 74-82 = 3,700 - 4,100 micromhos Transconductance (Gm ) @ range Ia = 29.0 mA - 45.0 mA (Plate Current). If the tube is run at 180 Plate Volts reading will be 3,700 Gm at 29.0 mA plate current. If the maximum setting of 250 Plate volts is applied then the tube will read 4,100 Gm @ 45.0 mA. A TV7 meter reading of 46= 2,300 micromhos Gm is Minimum Good 60%-65% tube life. Shipping: (We combine shipping for lower cost -just add to Ebay cart before you purchase then request an invoice before you pay. We will then adjust the shipping cost for multiple items)We ship FAST!. We pack very well for safe shipping and have shipped Worldwide many vintage audio, tubes/valves/lamps, speakers and various fragile electronic components for over 20+years. Selling on eBay for 23+years. Note: Some country exclusions currently apply. See country exclusions for this listing. Low-Cost CONUS+AK+HI shipping with USPS 1st class with Ebay parcel Tracking (3-7 days delivery) depending upon delivery zone/zip code, ships from South Florida. International shipping World-Wide via Low cost Ebay GPS Economy Small parcel consolidated standard shipping (via DHL International Space-Available consolidated Air-Freight) which includes Insurance with Tracking. We have found this shipping method the fastest, safest and most reliable. Depending upon country (10 days - 30 days for delivery). Ebay notice: Any import duties, value added taxes or other import fees that your country may apply are the responsibility of the BUYER and NOT the Ebay Seller. Please be informed of all costs BEFORE YOU Buy Thank you for looking!
Related Items
