Matched Pair RCA 12SN7 12SN7GT Vacuum Tubes RCA 6JH6 NOS NIB I just cleaned this three

I just cleaned this three record LP set on my VPI 16

25 and 26 where minimum (65%) is 21

65 and 79 where minimum (65%) is 45

These three Sylvania 2AF4A tubes tested to spec on our Paul Hart-calibrated TV7/U

There were no shorts or gas and they measured as follows (from left to right

Matched Pair RCA 12SN7 12SN7GT Vacuum Tubes RCA 6JH6 NOS NIB I just cleaned this threeThis matched pair of RCA 12SN7GT dual triodes was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 63 64 for Tube One and 66 60 for Tube Two. Minimum (65%) is 50. They have black plates; tall bases; D getters; steel support rods and KR and MC date codes, respectively. I am playing them as I write in my Radio Craftsmen RC 2 monoblocks with RCA Living Stereo's CD of