Matched Quad Sylvania 12AU7 12AU7A ECC82 Vacuum Tubes CONN-Selected NOS-Testing 12GN7 Nonal It is for the antenna

It is for the antenna alone

new in box US-made number / type 89 tubes tested to spec on our Paul Hart-calibrated TV7/U

This RCA Victor 5W4 tested 41/42 on our Paul Hart-calibrated TV7/U where minimum (65%) is 40/40 and 100% is 62/62

They measured 90/82 for Tube One and 91/84 for Tube Two where minimum (65%) is 57/57

Matched Quad Sylvania 12AU7 12AU7A ECC82 Vacuum Tubes CONN-Selected NOS-Testing 12GN7 Nonal It is for the antennaThis new old stock testing matched quad of Sylvania MANUFACTURED, CONN BRANDED and SELECTED 12AU7A ECC82 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 81 82 for Tube One and 81 85 for Tube Two. Tubes Three and Four measured 84 80 and 81 85, respectively where minimum (65%) is 56 56 and 100% is 86 86. These tubes were selected by CONN Organ for