The Y-169 is a 125 watt tetrode with a maximum frequency of 500 MHz. Data given is for the 4CX125C which I believe is a very similar tube with special testing or plating requirements.
Length = 2.50" Diameter = 1.25"
Max voltage = 2000
Max current = .25 amp
Fil voltage = 6
Fil current = 2.6 to 3.1 amps GOTO INDEX