This application requires the Microsoft NET Desktop Runtime for proper execution. Improve your marine Radio operator skills with the VHF-DSC simulator. Multiple functions are available, including communication between two or more devices iOS and Android) : just select a Waterplace and send DSC Routine message which will be received by all the simulators in your Waterplace. With VHF-DSC, you can train sending Mayday, Pan Pan, Security or Routine messages.