RFM69 in a 'mesh' network (UKHASnet)
I’m part of a group that are using arduinos/lpc810s/stm32s and RFM69 radio modules on 869.500Mhz to make a low power, licence exempt wireless network. Check out our website http://www.ukhas.net to see some of the networks that have been built. The plan is to expand the ground sensor networks but also to add remote nodes in the form of high altitude balloons and sea buoys. Last year at EMF camp we managed to get a downlink from the balloon rfm69hw (at 100mW) of 65km.
Jeelab boards with RFM69*s will work great on the network if anyone is interested. We also have a irc channel #ukhasnet on irc.freenode.net