Radio Relay Links: How it works, how to configure relay links
Relaying it's a software configuration that you can use in Ruby in order to relay the radio links (including live video, telemetry, data) to drones/planes/UAVs that are not reachable otherways with a direct radio link.
A direct radio link between a controller and a drone/plane/UAV can be impossible to establish in some situations where there are big obstructions in the way or the distance is too big, as in the pictures below:
That's where relay radio links come into picture: they allow to extend the range or coverage of a radio link between a controller and a target drone/plane/UAV, as in the pictures below:
Relaying is done using a software configuration, everything is already supported in Ruby and no additional special hardware is required. If you have a Ruby controller and 2 or more drones/planes/UAVs that are already paired with the controller, then you can enable and use the relay functionality rightaway:
Note: On the drones/planes/UAVs that you configure as relay nodes you do need to connect multiple radio interfaces to them so that the relay nodes can establish multiple, paralel, radio links with the controller, other relay nodes and the destination drone/plane/UAV.
Radio Links: How they work