Hello!,
I bought a pair of this model (although I have not yet received).
http://www.digi.com/products/wireless-wired-embedded-solutions/zigbee-rf-modules/point-multipoint-rfmodules/xbee-pro-868
I have doubts about its range of coverage.
I bought 2 antennas like this.
http://media.digikey.com/photos/Linx%20Tech%20Photos/ANT-868-CW-HW.jpg
You think that this antenna is compatible with this model XBee? , this is the datasheet of the antenna:
http://www.linxtechnologies.com/resources/data-guides/ant-868-cw-hw.pdf
Do you think I can get a communication between them in a range of 1 km?
I have no obstacles between them. You might think that I will try in the Kalahari Desert. But without trees.
http://www.chitwa.co.za/wp-content/uploads/2012/11/tswalu-1.jpg
Regards