What it is
Two types of radio used for team communication in the field, without relying on cell coverage. Short-range, walkie-talkie-style radios work for communication between people close by, within the same test site. HF radios reach hundreds or thousands of kilometers instead, because the signal is reflected by the ionosphere, allowing contact with people in the support town or at another distant base.
In TECER
They were part of the Phase 1 equipment kit precisely because the field deployment took place in locations with no cell signal, hours away from the nearest town. While the TVWS link and the solar kit required constant technical adjustments, team communication and the drone footage worked in a simpler, more predictable way.