The antenna is very importan factor for range testing.
For RAK811, we have ever tested it with RAK7243(RPi gatewat) using a small antenna, and the result is 2~3KM.
But when we used a 3dbi big glass-fiber for RAK811, and the gateway is RAK7249 which is a outdoor gateway with a big glass-fiber antenna too, the result is more than 34KM.
Which antenna comes with the RAK 811 and RAK 7258 as compared to your test examples? How can I optimize or replace the RAK 811 and RAK 7258 antennas for best transmission/reception in dense urban environments/buildings?
By default, RAK811 and RAK7258 will be sent out with a small antenna, so if you want to get a long range result, you should use better antenna.
You can have a look at RAK online store to find more details:
Thanks for your responses. As the antennas offered in your store appear to be the same for all LoRa frequencies, is there a way to further enhance range between my RAK 7258 Gateway and RAK 811 Nodes, specifically for dense urban US915 indoor building environments? For example, online tutorials show that taking the plastic cover off helps, or slightly cutting the length of the internal antenna helps move the optimal range upwards towards US915. Suggestions?