Tested on both our eTracer curve tracer, and Hickok 800A testers. Triode #1 - Plate Current = 2.70mA \ Rp = 27820 \ Gm = 1602 \ Mu = 41.9 \ Corners = PASS. Triode #2 - Plate Current = 2.71mA \ Rp = 28064 \ Gm = 1600 \ Mu = 41.5 \ Corners = PASS Gm Nominal = 1250 \ Minimum Good = 700.
eBay