Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass June 07 2022 new in box GE 38HE7

new in box GE 38HE7 tube tested to spec on our Paul Hart-calibrated Hickok TV7/U

so please be sure your power supply has sufficient capacity if you intend to sub a 12BH7 for a 12AU7

new in box 6CX8 tube tested to spec on our Paul Hart-calibrated TV7/U

Wish I knew who actually made them

They also have black plates and Micanol bases

Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass June 07 2022 new in box GE 38HE7This 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 23. 5 milliamps 2310 micromhos for Tube One and 24. 7 2200 for Tube Two. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with