The goal of the project was to provide digital communication infrastructure for traditional communities of isolated rural areas in Acre State, in the Amazon region of Brazil. This project is the continuation of a UNESP program by which, in 2015, five High Frequency (HF) radio stations where installed inside the Alto Juruá Reserve in communities without any communication infrastructure. The project expanded and improved the already existing radio network adding two new stations, adapting this technology with the feedback from the local community. In close collaboration with the communities, the project installed a fotovoltaic off-grid system to support the network at the Poeirinha station. Additionally, as part of the project team members worked on additional improvements to HF digital modem which allows digital data exchanges between the communities.