[Doug Houston]

I'm using a 10Y (VT25) in a Brunswick P-10 Panatrope (Phonograph), in place of a regular 10; possibly the original one. From all I'd ever read, the 10Y is simply an upgrade of the 10, and has the same characteristics as the original 10. It also has a micanol base, as the 10 was a popular oscillator with the hams i n the twenties. It was also the master oscillator in the BC-191 and BC 375 transmitters of WW II. The most refined version of the tube is the 210T, which has a ceramic base, and was designed for higher power transmitting service.

Now that you know this, leave a few of these tubes for those of us who have early Radiolas and record layers, please.