On April 18, 1952, during the Courier's shakedown cruise to the Panama Canal Zone, using the call sign KU2XAJ, tests were performed at 1700-2300 on 6110 and 9690 kc.
Courier was decommissioned on 25 August 1964 upon her return to Yorktown, Virginia and turned over to the Coast Guard Reserve Training Center at Yorktown, Virginia.