LIMITED RADIO COVERAGE OF THE AMSTERDAM INFO FREQUENCY 119.175 
MHZ BETWEEN UTIRA AND EPOXU BELOW 1000 FT. 
NORTH SEA AREA AMSTERAM IS A RADIO MANDATORY ZONE AND  RADIO 
COMMUNICATION WITH AMSTERDAM INFORMATION IS REQUIRED. TO PREVENT 
SAFETY INCIDENTS KEEP TRYING TO CALL AMSTERDAM INFO WHEN OPERATING 
IN THIS AREA.