Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass Lore Noto Presents This matched pair of National

This matched pair of National Union milspec output tubes was tested on Paul Hart-calibrated TV7/U for shorts

77/52 and 82/48 where minimum (65%) is 50/40

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

but they seem very-well-built

side harp getters

Matched Pair Raytheon 6V6 6V6GT Vacuum Tubes Gray Glass Lore Noto Presents This matched pair of NationalThis 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