The RS289 is a 12 watt tetrode made by Telefunken for the German military in WWII. Length = 6.00" Diameter = 1.87" Max voltage = 450 Max current = 30 ma Fil voltage = 4 Fil current = 2.1 amps Data sheet: GOTO INDEX
The RS289 is a 12 watt tetrode made by Telefunken for the German military in WWII.