6LX8 LCF80. I have a B&K 747 tube tester. This is a mutual conductance tester. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. The lines show how the tube conducts throughout that range.
Item Tag: 6LX8 LCF80
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SYLVANIA 6LX8 LCF802 TUBE NOS NIB Valvola Röhre Valve SINGLE
6LX8 LCF80. I have a B&K 747 tube tester. This is a mutual conductance tester. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. The lines show how the tube conducts throughout that range.