After reading the thread about this tube, which I've never used and frankly never even seen, I just "had to" find out how much it cost. It's $966 (yikes) direct from Eimac. They also quoted lead time of "18 weeks." I can buy 5-1/2 3-500ZGs for that. And the 1/2 a tube might come in handy for spare parts. ;-) <<009q5453.pdf>> WB2WIK/6