Licensed radio amateurs are using different means of communication systems to communicate with each other.
Local comms means line of sight comms using Simplex or Duplex pair of frequencies, for example local VHF (144 - 146 MHz) or UHF (430 - 440 MHz) Repeater system.
There is also a way of using HF (High Frequencies) for local communications within Seychelles territory, it can be achieved by LoS Comms (Line of Sight Communications) or NVIS (Near Vertical Incident Skywave) that can cross mountains by reflecting the RF signal from the Ionospheric layer appearing in Zenith.
Please note in Seychelles we are following RSGB Guidance of Frequency use, also IARU Region 1.
^Posted by S79KW on 2nd April 2021