Frank's Electron tube Pages

Sorry for presenting my contact data as an image. I hope this will reduce the amount of SPAM.

If you send me a mail: Please give me a valid email return address and preferably your first AND second/family name. There are so many John's;-)

If you need a datasheet, please provide me with as much data as possible. Just a tube type number is often difficult to find. The brand name helps a lot. If you don't have a brand name, please add a good description. [ I have a lot of data but far from all;-) ] Thanks, FP.