4 RCA 6BG6 6BG6G Vacuum Tubes Shoulder ST-Shape Triple 3 Mica Lot Of Four 6EH5 Septal T13 Date Codes: none visible

Date Codes: none visible

dimple sheet getter

new in box Miller 12-H6 KC output transformer with diode filter is sold as-is as I have no means of testing this output transformer

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

The diodes measured 78 and 74

4 RCA 6BG6 6BG6G Vacuum Tubes Shoulder ST-Shape Triple 3 Mica Lot Of Four 6EH5 Septal T13 Date Codes: none visibleThis 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