I want to send data from one arduino or raspberry pi to another arduino. and the distance between them is around more than 5 kilo meter. So how can i do this i do not want to use internet and GSM module. I want to make a project to send data over long rage without internet. So anyone can suggest me which module and what technology i should use, thank you.
the environment can be any, and the device will always be in a person hand so you can consider the height. I want to send the messages(ex:- i am in usa, where are u) and few data(float and integers) so the data can not be greater than 50 bytes so the data rate i require 50 bytes/sec. I am thinking to use this device in any environment like in urban or hilly areas.