THE MARCONI MARINE APOLLO RECEIVER WAS A HIGH STABILITY RECEIVER, AND IN IT'S DAY WAS AMONGST ONE OF  THE BEST RECEIVERS YOU COULD HOPE TO SAIL WITH, AGAIN  IT WAS USED AS THE SHIPS MAIN RECEIVER. DENHOLM SHIP MANAGEMENT / SEATRAINS 'EUROFREIGHTER' HAD ONE OF THESE RECEIVERS AS THE MAIN RECEIVER.