Currently using the XBee PRO 868 MHz in the following configuration :
- 1 coordinator or control center (typically an XBee connected to a laptop through a USB adapter) + Yagi antenna.
- Around 10 end device modules on the field (small RPSMA Antenna sometimes with an RPSMA extension cable).
The distance between the coordinator and the end devices vary between 100 m and 2 km. The distance between the end devices antenna vary between 30 cm and 2 km.
All modules are configured with the default configuration + max power transmission.
The problem we're facing is that we can communicate between the control center and the end devices independently, we can also communicate when every module is activated except when the end device antennas are to close (30 cm). Is there any application notes or software that allows to check if a minimal distance should be respected? Is it possible that the modules are interfering with one another when too close?
Thank's for the support!