Matched Pair Hytron 6V6 6V6GT Black Plate Clear Bottle Vacuum Tubes T15 T55 new in box 12F5GT tubes

new in box 12F5GT tubes tested to spec on our Paul Hart-calibrated TV7/U

It has double

Their internal structures are all the same

This trio of Westinghouse black plate 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box RCA 6BN4A tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Hytron 6V6 6V6GT Black Plate Clear Bottle Vacuum Tubes T15 T55 new in box 12F5GT tubesThis matched pair of black plate Hytron 6V6GT output tubes was tested on our Maxi Matcher 2 for shorts, gas and transconductance. There were no shorts or gas. Plate current measured 9. 7 milliamps and transconductance was 1510 micromhos for Tube One. Tube Two measured 10. 3 1180. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so.) They have tall bases; shiny black plates