The UY-510B or E510B is a 15 watt tetrode made for use by the Japanese military. The first example is made by Matsuda and has a carbon anode. The second was made by Tokyo Electric (Toshiba) with a more conventional metalic anode.

Length = 6.25" Diameter = 2.03"
Max voltage = 500
Max current = 43 ma
Fil voltage = 6
Fil current = 1.5 amps         GOTO INDEX