Has anyone used products from Digi or other manufacturers for long range RF transmissions at 900 MHz? I am designing a project for a number of cameras to be installed in county parks where only power is available. I was considering using LTE but that can be expensive and bandwidth may be insufficient. The industrial radio I am considering (Digi XLR Pro, model XL9-UA) claims up to 3.2Mbps throughput @ 1 Watt, but if I constrain the cameras to 2Mbps, I might be OK. This solution doesn't solve a backhaul problem for recording or viewing multiple cameras live since the head-end would have the same radio. I have no line of sight, cannot erect towers, and according to Google, the worst-case straight-line distance is almost 5 miles. I've advised the client that local recording would be best, with an NVR at each park but remote access may still be a challenge.
I am sure I can solve the recording/streaming issue, just looking for alternatives where WiFi may not be possible (distances) and LTE is not practical. Thanks.