I have a question for the list.I'm repairing an old am radio that uses at 117Z6GT as a rectifier. I have the radio working again, but I notice when I turn it on that the 117Z6 filaments glow really bright for a couple of seconds. Then settle down to what you would expect to see, a red glow.
I don't have any experience with this tube, or how it should act at turn on. It what I'm seeing a normal condition? Thanks, George KE4HJ
