JHS-780D VHF DSC GMDSS

The JRC JHS-780D VHF DSC GMDSS is a marine VHF DSC radiotelephone. It is normally installed at the bridge GMDSS/radio console with VHF antenna and position input. It is designed for routine VHF voice traffic plus digital selective calling for distress and safety functions. The operating principle relies on VHF voice communication combined with DSC calling and identity/position data. The supplied entry gives no additional verified capacity, pressure, power or dimensional figure for this model. Compared with neighbouring models, the relevant differences are DSC controller, remote stations, AIS integration and approval configuration; these must be confirmed from the installed documentation rather than inferred from the model designation alone. Service and survey attention should concentrate on voice and DSC tests, MMSI/position input, antenna condition, distress controls and emergency power. For exact ratings, dimensions, tolerances, test limits and model-specific settings, refer to the manufacturer documentation for the exact figure.