Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods NOS-Testing 7 Lot Of Seven Please see Picture Four

Please see Picture Four

round mica spacers and A1 and R1 date codes

where (65%) is 43 and 100% is 66

This lot of three US-made 5763 tubes tested as follows on our Paul Hart-calibrated TV7/U:

Sylvania-LABELED 11BM8 tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods NOS-Testing 7 Lot Of Seven Please see Picture FourThis new old stock testing matched pair of GE 6SN7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 76 74 for Tube One and 80 72 for Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have 4 48 188 5 and 4 43 188 5 date factory codes; tall bases; copper support rods, horseshoe getters and excellent flashing. I have played them in my