SEIMENS S.B 402 TRANSMITTER / RECEIVER
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ABOVE IS THE SEIMENS S.B 402 TRANSMITTER IT HAD A POWER OF 250 WATTS .THE UPPER PART CONTAINS THE TRANSMITTER SECTION, THE CENTRE SECTION IS THE "SWITCHING UNIT " ( CONTROLS POWER / SWITCHING ETC TO THE TRANSMITTER ) AND THE LOWER SECTION HOUSES THE RECEIVER. IT COULD BE OPERATED ON CW /ICW / RT.IT WAS SOME WHAT MORE POWERFIL THAN THE SB.202 AND THE SB302.