A simple Google search turned up,
http://www.tubecollector.org/yl1042.htm

Ron


"KSM" wrote in message
ink.net...
I have a Siemens NOS YL1042 tube, but can't find anything on it. It's a
transmitting tube from the looks of it.

Thanks,
Kelly

kmolles(at)sbcglobal(dot)net