He is returning the tube for me see for myself. And yes, I know the date code on the one I sent him :-) 73, Alan G3XAQ On Sat, Mar 25, 2023 at 5:32 PM gudguyham at aol.com <gudguyham at aol.com> wrote: > If it were me I’d want to see for myself that the filament went open! > -- Alan Ibbetson alan at g3xaq.net