------------ ORIGINAL MESSAGE ------------(may be snipped) On Tue, 25 Jul 2017 07:22:04 +0800, Alek wrote: > >Yep. There is nothing wrong with any of the 3-500ZG tubes. REPLY: If possible, try to buy ones with welded filament pins. The ones that are soldered have a way of coming unsoldered after a while. 73, Bill W6WRT