Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass NOS-Testing February 03 2025 new in box US-Made 21GY5

new in box US-Made 21GY5 tubes tested to spec on our on our Jackson 648

new in box GE dual triodes was tested on

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new in box US-made 1LN5 tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass NOS-Testing February 03 2025 new in box US-Made 21GY5This new old stock TESTING matched pair of Raytheon gray glass 6V6GT output tubes was tested on our Maxi Matcher 2 at real operating voltages of 400 volts on the plates and a bias of 36 volts for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 27. 4 milliamps 2500 micromhos for Tube One and 27. 5 2210 for Tube Two. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with