"Rob Mills" wrote in message
news:eTxRb.470$Le3.182@okepread04...

"HeavyMetal" wrote in message
...

By the way, the tube is a four pin..

The conversion manual (1948) that I have shows a 5Y3. RM~

A 5Y3 is the modern electrical equivalent to an x80 tube, and
much cheaper. Change to an octal socket.

Pete