Don't know if anyone has mentioned this one or if anyone can use it? 25VEDP22 MATRIX

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=15083&item=3092931093&rd=1

That may be the tube that Heathkit used in some of their kits. The number sure sounds familiar (will have to dig thru some papers to check) and the seller does mention something about a kit. Have sent him an e-mail asking about this.

Anthony