2 Sovtek 6BQ5 EL84 Vacuum Tubes NOS-Testing Lot Of Two ECF80 T35 tall bases

tall bases

This hardcover book -- and its dust jacket -- is in very good condition

Tube One measured 1630 micromhos

These are great-looking

2 Sovtek 6BQ5 EL84 Vacuum Tubes NOS-Testing Lot Of Two ECF80 T35 tall basesThis new old stock testing pair of Sovtek 6BQ5 EL84 6P14 6P14P output tubes was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 14 volts for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 7120 micromhos for Tube One and 7590 for Tube Two. Plate current draw was 26. 6 milliamps for Tube One and 35. 2 for Tube Two. (New EL84s typically test from the mid 20s to mid 30s with