sargent wrote:
I have a Yaesu FTDX 400 transmitter that I am restoring to operating
condition. In the tube list there is a "VR 150MT" called for, and on
the chassis a Raytheon JANOA2WA installed. I have been unable to verify
this substitution. Does anyone know if this is a correct replacement?

They are both 150 volt regulator tubes and either will work. The VR 150
MT is the Japanese designation.

Les