4 US-Made 6H6 6H6G Vacuum Tubes Shoulder ST-Shape Lot Of Four Spirit Of Christmas Tubes Two and Three measured

Tubes Two and Three measured 1230/16

top to bottom): 42/34

This Westinghouse 25AV5GT tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-TESTING matched pair of Sylvania 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

These six Cunningham C-324 globe

4 US-Made 6H6 6H6G Vacuum Tubes Shoulder ST-Shape Lot Of Four Spirit Of Christmas Tubes Two and Three measuredThese four US made 6H6G tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 52 52, 53 53, 53 53 and 53 55 where minimum (65%) is 40 40 and 100% 62 62. So far, these are the only Coke bottle shape 6H6s I have seen in 25 years in the tube business. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE