Thanks. A HackRF one is available to monitor all the nodes at once, at least until the mesh expands beyond its range. Each node is a mini router mounted to a mobile robot . The purpose is an inexpensive rapidly deployable emergency network. Deploy from a single location and the mesh expands in a target direction until signal falls below a threshold. We need some indicator of direction to neighboring nodes to steer the robots in case GPS reception is compromised. A 12 sector 30deg indication is sufficient. We can spin the whole robot to determine the direction with strongest signal. But that takes time and power we’d rather not spend. A rotator is another expensive add on. A continuous differential rssi would be handy for guiding the robots toward optimum signal.