Test calls

Test callThere are 2 types of test call:

• Test call to the US Coast Guard automated response test call service (MMSI: 003669999). This type of test call will receive an automated response (acknowledgement).

• Test call to another vessel that has a radio that supports the test call feature. Your radio will automatically acknowledge test calls received from other radios.

For radios that do NOT support the test call feature, correct radio operation can be tested by making an Individual call on channel 70 to another DSC VHF radio.

It is recommended that once you've successfully placed a test call you add the test call MMSI to your radio's Phonebook for easy retrieval for future test calls. For information on how to add an MMSI to your radio's Phonebook, refer to the “Adding a Phonebook entry” section.