4 RCA 6BG6 6BG6G Vacuum Tubes Shoulder ST-Shape Triple 3 Mica Lot Of Four 6EH5 Septal T13 Tube One measured 64 while

Tube One measured 64 while Tube Two measured 68 where minimum (65%) is 46

Both tubes were made in the same factory just as RCA bought out Cunningham

This matched pair of Sylvania 6F6G tubes was tested on our Maxi-Matcher 325 volts on the plates and a bias of -36 volts for shorts

new in box GE 6EM5 tube tested to spec on our Paul Hart-calibrated TV7/U

I am playing them played them in one of my Radio Craftsman RC-2 monoblocks and they sound great

4 RCA 6BG6 6BG6G Vacuum Tubes Shoulder ST-Shape Triple 3 Mica Lot Of Four 6EH5 Septal T13 Tube One measured 64 whileThis lot of four RCA triple mica 6BG6G output tubes was tested on our Maxi Matcher with 400 volts on the plates and a bias of 48 volts for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 2020 micromhos for Tube One and 1630 for Tube Two. Tubes Three and Four measured 2260 and 2380, respectively. Plate current draw was 15. 6, 17. 3, 19. 4 and 27. 7 milliamps, respectively. (New 6BG6s typically test with plate