When using an Emlid RS2 GNSS receiver as a base to send corrections to our rover via LoRA - we sometimes find it useful to replace the factory 3dBi antenna with a high gain 6dBi antenna for improved performance.
Triangl antennas and cables are available from https://www.mangoesmapping.com.au or online via Map Gear.
https://www.mapgear.com.au/product/triangl-extended-range-antenna-kit/
The Extended Range Antenna Kit from Triangl includes a pair of 6dBI Omni Directional Antennas with 50cm Coaxial Cables.
https://www.mapgear.com.au/product/insulated-coaxial-cable-with-n-and-sma-connectors/
An additional 5 metre cable allows the antenna to be mounted significantly higher that the GNSS receiver.