Photos courtesy of Henrich Busch http://www.seefunk.hbusch.de

THE MARCONI MARINE  ' SALVOR ' WAS A SHIPS EMERGENCY TRANSMITTER - CAPABLE OF RUNNING FROM THE SHIPS 24 VOLT BATTERY BANK - MOST OF THE SHIPS I SAILED ON HAD ONE OF THESE TRANSMITTERS - RANGING FROM SALVOR 1 TO SALVOR 4. THE ABOVE TWO PICTURES SHOW A SALVOR I.THEY COVERED THE M.F SHIPPING BAND I.E THE DISTRESS FREQUENCY OF 500 kHz AND 410 kHz,425 kHz,454 kHz,468 kHz,480 kHz, 512 kHz.THEY COULD OBVIOUSLY BE KEYED BY THE AUTO KEY UNIT TO SEND DISTRESS MESSAGES PRECEDED ( TIME ALLOWING ) BY THE CW ALARM CALL I.E TWELVE , FOUR SECOND DASHES SEPARATED  BY A ONE SECOND SPACE ALL SENT WITHIN A MINUTE.   IT COULD BE READY TO USE WITHIN SIX SECONDS OF BEING SWITCHED ON.THEY HAD A POWER OF ABOUT 25 WATTS, HAVING TWO VALVE'S IN THE PA STAGE ( I THINK THEY WERE 807'S, BUT NOT 100% SURE NOW ) THE PA WAS INDUCTIVELY COUPLED TO THE AERIAL, BY USE OF A VARIOMETER. THEY WERE NOT NECESSARILY JUST USED FOR EMERGENCY USE - I USED MINE TO CLEAR LOCAL TRAFFIC ON 500 kHz WHILST WAITING MY TURN WITH A H.F STATION - THUS HAVING THE MAIN TRANSMITTER ALREADY SET-UP FOR THAT TRAFFIC EXCHANGE.

ABOVE IS THE MARCONI MARINE SALVOR 4 EMERGENCY TRANSMITTER.

Photo courtesy of Steve Hill's Radio Museum / www.qsl.net/vk4czt