4 Hytron 50L6 50L6GT Vacuum Tubes Gray Glass Lot Of Four Industrial Grade new in box Trigon UCH81

new in box Trigon UCH81 tube tested to spec on our Paul Hart-calibrated TV7/U

These four US-made 12SC7 tubes tested as follows on our Paul Hart-calibrated TV7/U:

an O-getter

new in box RCA 1AC5 tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

but tests on the low side for a new tube

4 Hytron 50L6 50L6GT Vacuum Tubes Gray Glass Lot Of Four Industrial Grade new in box Trigon UCH81This lot of four Hytron coated glass 50L6GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 59, 62, 65 and 79 where minimum (65%) is 45. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST