Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes NOS NIB T67 Backup T15 It measured 58/50 where minimum

It measured 58/50 where minimum (65%) is 40/40 and 100% is 62/62

BECAUSE OF THE BIZARRE

They have V3

D getters and short bases

There is no transconductance reference reading on the Maxi-Matcher hence the use of the TV7/U in this category

Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes NOS NIB T67 Backup T15 It measured 58/50 where minimumThis new old stock, new in box matched pair of GE 6BL7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 56 56 for Tube One and 58 58 for Tube Two where minimum (65%) is 25 25 and 100% is 38. 5 38. 5. They have chamfered top O getters; steel support rods; great flashing; stout gray plates; anode radiators for cooler operation and longer life and