When I claimed I had tested my tubes and found their filaments "good" I was simply referring to the fact that they were not found to be open circuit and many were tested under the proper voltage with my rewound MOT secondary filament transformer. However, I do not yet know if any of my tubes are weak. Is there anyway to test for this condition outside of actual operation in a VTTC (class C armstrong osc.) circuit?
Brett, The easiest way to test them is in a VTTC, since you'll already have the VTTC once you get it working. That's how I test all my tubes.John