(After five minutes, AA-50 resumes scanning.) # a message other than distress (for example, safety) transmitted on a distress/safety frequency by DSC-5 its keyboard locks and the "REMOTE” LED lights one minute. # a distress from another ship it watches on the received frequency three minutes to receive distress acknowledgement (DIST ACK) from a coast station. 4 2.1 Regular Checks The AA-50 and AA-50R are designed to provide many years of trouble-free performance. However, no machine can per

No user-serviceable parts inside. A - - Name: Warning Label (1) Type : 86-003-1011-0 Code No. : 100-236-230 AA-50 MF/HF DSC RECEIVER 7 Photo No. 1244 AA-50R MF/HF DSC RECEIVER (Rack Mount) Page SAFETY INSTRUCTIONS i INTRODUCTION 1 1. OPERATION 2 1.1 Controls....................................................2 1.2 Basic Operating Procedure .................................3 1.3 Receiving ..................................................4 2. MAINTENANCE 5 2.1 Regular Checks ......