With the use of vacuum tubes, the MiG-25P's original Smerch-A (Tornado, NATO reporting name "Foxfire") radar had enormous power – about 600 kilowatts.
Dengan penggunaan tabung-hampa, the MiG-25P Smerch-A orisinil (Tornado, NATO memberi nama 'Foxfire') radarnya memiliki kekuatan besar-sekitar 600 kilowatts.