Compact, rugged, lightweight magnetron MG5223 S-Band with a fixed pulse frequency, designed for use in marine radars. Magnetron MG5223 S-Band is safe and reliable in use and operation, operates in a frequency range of + 10 :: 3050 MHz. Decrease of the filament voltage is not required for any value of the input power. For optimal performance, filament voltage must be within specified limits.