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

ABOVE IS THE MARCONI MARINE ' SALVARE ' EMERGENCY TRANSMITTER. IT HAD A 60 WATT OUTPUT AND WORKED ON THE 500 kHz AND 8364 kHz DISTRESS FREQUENCIES. IT WAS USUALLY INSTALLED IN MOTORISED LIFEBOATS. IN THE MIDDLE, AT THE BOTTOM  IS THE ACCOMPANYING RECEIVER, WHICH LOOKS LIKE AN EARLY " MONITOR " RECEIVER. THE PA OF THE SALVARE HAD THREE BEAM TETRODES  VALVES IN PARALLEL. THE RECEIVER WAS A SUPERHET TYPE USING EIGHT VALVES.IT WAS ALL POWERED BY A ROTARY TRANSFORMER ( WITH IN THE UNIT ) GIVING A VOLTAGE OF 900 VOLTS AT 330 Ma. THE OTHER SUB UNITS AREA BATTERY CHARGING UNIT, A MOTOR DRIVEN AUTO KEY DEVISE AND AND ARTIFICIAL ANTENNA ( FOR TEST PURPOSES )