Paging Don Helgeson (Or WL530/VT122 Data needed)

[Bigglez]

Does anyone know how to contact Don Helgeson?

His name came back in a google search for "SCR-270 Radar",
He has a pag eup and appears to be the "go to" person.
It had this email: [email protected]

My ISP sent me a message saying that address could
not be reached(!?)

I'm trying to find a vacuum tube data sheet for
a WL530 (VT122). It's a 500kW radar tube. I have
one in fair shape sitting on my desk, it would be
nice to know more about it.