4 US-Made 6211 Vacuum Tubes Lot Of Four Sylvania NOS NIB This new in box JJ

This new in box JJ 6BQ5 was tested on our Maxi-Matcher with 325 volts on the plates and a bias of -14 volts for shorts

side D-getters and excellent flashing

new in box Sylvania 9JW8 / PCF802 tube tested to spec on our Paul Hart-calibrated TV7/U

It measured 84/82 where minimum (65%) is 50/50 and 100% is 77/77

4 US-Made 6211 Vacuum Tubes Lot Of Four Sylvania NOS NIB This new in box JJThis quad of US made 6211 dual triodes was tested on our Hickok 800 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 2000 1900 micromhos for Tube One and 2000 2000 micromhos for Tube Two. Tubes Three and Four measured 2400 2650 and 2800 3200, respectively. (New 6211s typically test within one to 1. 5 standard deviations of 3600 micromhos and tend to be rather erratic readings wise like their 12AT7 cousins).