Matched Pair RCA 6V6 6V6GT Gray Glass Vacuum Tubes NOS-Testing Quartets Opus 18 Transconductance was 2810 micromhos for

Transconductance was 2810 micromhos for Tube One and 2900 for Tube Two

new in box matched pair of GE-MANUFACTURED 6FQ7 / 6CG7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

55 and 58 where minimum (65%) is 40 and 100% is 62

Transconductance measured 19

Tube One measured 2200 micromhos

Matched Pair RCA 6V6 6V6GT Gray Glass Vacuum Tubes NOS-Testing Quartets Opus 18 Transconductance was 2810 micromhos forThis new old stock TESTING matched pair of RCA gray glass 6V6GT output tubes was tested on our Maxi Matcher 2 for shorts, gas and transconductance. There were no shorts or gas. Plate current measured 25. 3 milliamps and transconductance was 2650 micromhos for Tube One. Tube Two measured 26. 4 2590. (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;