Matched Pair Sylvania Uncle Doug 6L6 6L6GC Vacuum Tubes Valves NOS-Testing October 10 2022 100% is 77/77

100% is 77/77

There were no shorts or gas and they measured as follows:

where minimum (65%) is 40/40

new in box Raytheon 12K5 tube tested to spec on our Paul Hart-calibrated TV7/U

respectively where minimum (65%) is 57/57

Matched Pair Sylvania Uncle Doug 6L6 6L6GC Vacuum Tubes Valves NOS-Testing October 10 2022 100% is 77/77This matched pair of new old stock TESTING Sylvania 6L6GC "Uncle Doug" output tubes was tested on our Maxi Matcher with 400 volts on the plates and a bias of 48 volts for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One: Tube Two: Transconductance: 2490 micromhos Transconductance: 2670 micromhos Plate Current Draw: 31 Plate Current Draw: 34. 5 (New US made 6L6GCs typically test with plate current from