See video of range testing here: https://youtu.be/x4hUsRF3GCM
See also notes from @dave.larson1 here: Photos of Sky and Installation
** Every situation is unique. Radio signal strength can be affected by a variety of visibile and invisible impedence. Best to test in your location and use the RSSI values on your station status page to monitor the signal strength. The telemetry between HUB and AIR/SKY was meticulously designed to maximize both range and data packet delivery. **