The RS-237 is a 100 Watt transmitting triode. The filament voltage is 10 Volts. Filament current is 3.3 A. The anode voltage is varied based on the required wavelength of the transmission, but can be as high as 1000 V - 215 mA.
The anode current is 215 mA. The screen biasing voltage is 220 V. The screen current is 22 mA. The anode output is 100 Watts.
Photo showing the Telefunken logo and tube model name.



The huge anode jacket.



The anode jacket from a 45 degree angle.



The socket



The RS237 pinout diagram.