Matched Pair Sylvania 6V6 6V6GT Gray And Silver Bottle Silver Top Vacuum Tubes NOS-Testing Meski Filharmonii new in box Raytheon 1H5GT

new in box Raytheon 1H5GT tube tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing matched pair of RCA black plate triple mica 6CL6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

5 or nine out of ten

new in box RCA 6B10 tubes tested to spec on our Paul Hart-calibrated TV7/U

It will also be also -- as time becomes available -- on our Paul Hart-calibrated TV7/U for a more-familiar point of reference for most

Matched Pair Sylvania 6V6 6V6GT Gray And Silver Bottle Silver Top Vacuum Tubes NOS-Testing Meski Filharmonii new in box Raytheon 1H5GTThis new old stock testing matched pair of Sylvania 6V6GT output tubes was tested on our Maxi Matcher 2 for shorts, gas and transconductance. There were no shorts or gas. Plate current measured 27. 6 milliamps and transconductance was 2740 micromhos for Tube One. Tube Two measured 27. 9 2740. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so.) As I write, I am playing them