Elsight Ltd. Halo (OEM-Modul)

The Halo from Elsight (Israel) is an OEM connectivity module for mid-size multicopters that bonds all available networks into one logical channel: cellular and further networks run simultaneously as a multi-link. It is intended for command, control and live video on flights beyond visual line of sight (BVLOS). Unlike radio links with a frequency of their own, it uses networks that already exist.

The OEM module weighs 93 g at 87 x 69 x 19 mm and draws 6.5 W on average; there is also a housed version at 534 g. The system has no range of its own, it depends on network coverage: where several networks are present the link holds, where there is none it drops out. Cellular networks are planned for users on the ground, coverage varies at greater height, and delay changes with network load and the route the data takes.

Because the module uses networks supplied by an operator, the pilot needs no frequency assignment of their own; radio approval lies with the networks and the radio parts built into the module. In the EU, flights beyond visual line of sight fall into the specific category and need an operational authorisation or a declaration for a standard scenario. Connection over third-party networks is a factor the risk assessment has to take into account.

When choosing, network coverage in the operating area counts, checked at flight altitude rather than on the ground. The module needs SIM cards or access to several networks, which have to be maintained. At 6.5 W power draw it generates heat that has to be dissipated, and the antennas of the individual networks are the delicate wear parts.