This was an interesting article about AirChat, a program to encrypt data over HAM radio. Bit slow way of doing things, but its a different medium that may not be noticed by governments and can travel long distances. My “HAM” skills are about zero to none so I can’t tell one way or the other if this is a good idea.
http://www.theregister.co.uk/2014/05/01/anonymous_to_world_go_pirate_radio_for_datacomms/