Eico 666 Tube Tester Data for 6922 and KT-90?

I have an old Eico tube tester model 666 and was wondering if anyone had the test data for 6922 and KT-90 tubes.

Thanks,
Steve

steves7109-03-2001 6:50pm

6bq5 Details Discussions Posts This discussion Message User 62 posts 09-04-2001 at 03:36pm Copy Comment URL Report Comment Edit Delete The 6922 should test Similar to the 6dj8, there may be some minor varriations, I dont have my RCA Tube Manual in front of me right now, but they are interchangeable in audio circuits. The KT-90 will not be on any charts, as this tube was only created in 1989, had a short run in the ei factory in Yugoslavia, before the wars, and is really a POS. It was designed to be a "hot-rod" KT-88 +, but it falls way short of a finished, reliable product. Good luck
6bq5 Details Discussions Posts This discussion Message User 62 posts 09-07-2001 at 04:43pm Copy Comment URL Report Comment Edit Delete Steves71, Sorry for the delayed response. Bob has hit the nail on the head. Through a variety of circumstanses I saw some of the early KT-90s before release, and we had the opportunuty to test them and evaluate them. The hysteresis is just off the scale, and the linearity of the gain is not a lot better. The are well made mechanically, but electrically they need aLOT of refinement to be usable. Good luck w/ the 6922/6dj8s