This information is condensed from the United States Coast Guard Navigation Center's guide.


DSC Test Calls


To perform a DSC Test Call with the USCG, enter the coast station group identity “003669999” into the radio’s DSC memory. Once stored, a DSC test call can be made by executing the following three steps:


  1. Select “Test Call” from the radio’s DSC menu,
  2. Select the USCG number entered into memory, and
  3. Transmit the call.


The radio display should indicate when that test call is acknowledged and display the acknowledging station’s nine-digit identity. That identity may be different than the group identity previously entered into memory.


Under no circumstances should a DSC Distress Alert be sent to test your radio.


Voice Radio Checks


For radio checks by voice with other boaters, please use VHF-FM CH 09 (156.45MHz). The USCG does not monitor CH 09. Please refrain from using VHF-FM CH 16 (156.8MHz).