Matched Pair General Electric GE Red Label 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA Camden C Grafica s

C Grafica s

Three are GE and two are Sylvania

7 milliamps' plate current

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Matched Pair General Electric GE Red Label 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA Camden C Grafica sThis matched pair of GE Red Label 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 70 66 for Tube One and 71 70 for Tube Two. (Minimum (65%) is 50 50.) They have O getters; tall bases; copper support rods; a round and square hole in each mica spacer; great flashing and 64 09 188 5 and 63 13 188 5 date factory codes, respectively. I have played