Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass Lore Noto Presents These three new old stock-testing

These three new old stock-testing US-made 1H4G tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance measured 58 for Tube One and 59 for Tube Two where minimum (65%) is 40

a side-D getter

Transconductance measured 85 for Tube One and 86 for Tube Two where minimum (65%) is 58

Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass Lore Noto Presents These three new old stock-testingThis 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. 4 milliamps 2270 micromhos for Tube One and 24 2540 for Tube Two. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300