Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods NOS-Testing March 30 2025 new in box RCA 6H6

new in box RCA 6H6 tube tested to spec on our Paul Hart-calibrated TV7/U

excellent flashing and top O getters

solid saucer getters and excellent top and side flashing

312 026 and 113 EIA/date codes

Lancashire in the first week of November

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods NOS-Testing March 30 2025 new in box RCA 6H6This new old stock TESTING matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 82 79 for Tube One and 80 81 for Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have side, harp getters; copper support rods; great flashing and 56 26 188 4 and 58 13 188 5 date factory codes, respectively. I have played them in my