Ken,
Every RRC has its own unique ID. Just do the following:
- Go to the Dynamic DNS settings tab (radio RRC only)
- Change the check interval to i.e. 10 minutes
- Make sure the drop-down is on RemoteRig's service
- Click on apply changes
- copy/paste the address from the "own host name" field into the control RRC's "SIP contact" field
73,
Mitch DJ0QN / K7DX