logo techio azul

¿qué es techio comunitario?

sobre techio comunitario
historia del proceso



2016 - 2017
2018 - 2019
semillero de redes comunitarias


2019 - 2020
2020 - 2021


tronco común social
tronco común técnico
sistemas de comunicación




programas de radio
charlas y webinars

communication systems

1. broadcasting
2. internet networks and community intranets
3. community cellular telephony
4. hf radio


Community radios continue to be one of the most used media in communities, their potential for the dissemination of messages is key, as it is anchored in their organizational forms. The purpose of these courses is to enable people to be in charge of the technical operation of a community radio station as well as to provide them with the necessary knowledge and skills to handle the hardware and software used in this type of media.

Some of the contents to be covered include: basic concepts of Broadcasting, radio-frequency, modulation, transmitters and antennas, booth installation and maintenance.

  • Basic concepts of broadcasting.
  • Installation and maintenance of radio booth equipment.
  • Characteristics, types and measurement of antennas.
  • Maintenance, repair, assembly and calibration of radio transmitters.
  • Free Software for community radio.

Reference materials

community internet networks and intranets

Community networks are projects related to communication and access to information in which the people living in a given territory organize themselves to generate their own telecommunications networks in accordance with their way of life, work, and knowledge sharing. In recent years, this type of networks have been implemented as a strategy by a wide range of communities to connect in an autonomous, relevant and affordable way, with quality of service and digital security.

The goal of these courses is to provide the necessary knowledge to install, maintain, secure, and update networks for low-cost wireless data transmission suitable for long-distance links. Through critical reflections and practical exercises, the necessary knowledge is shared for the implementation of community networks that can be sustainable over time.

  • Introduction to wireless networks.
  • Wireless stations configuration.
  • Wireless network design and planning.
  • Point-to-point connections.
  • Mesh networks.
  • Free hardware and software tools for community networks..
  • Autonomous community servers.
  • Organizational, technical, economic and social challenges of community networks.
  • Community network experiences in the world.

Reference materials

community cellular telephony

The purpose of community cellular telephony networks is to create systems, either with or without their own infrastructure, that provide connectivity and communication through mobile devices.

Due to their technical characteristics and regulatory needs, there are very few experiences of this sort in the world, and they are concentrated mainly in Mexico. This type of community network has required a series of technical innovations and strategies for sustainability and political advocacy that demonstrate the possibility of generating relevant telecommunications services in line with the communication needs of the communities.

There are two types of networks of this nature:

  • Networks that have their own infrastructure: in Mexico, Telecomunicaciones Indígenas Comunitarias A.C. is the organization that has the concession for the use of frequencies. As of 2022 there has been a migration process of these networks to 4G technology. Decisions about the network are made through the assembly of members in which they participate. Although this type of network requires changes in the legislation of most countries, there are already other initiatives of similar projects, such as the experimental concessions being developed in Cauca, Colombia.
    Trainings on this type of networks are given within the framework of the installation or maintenance of equipment in real contexts, with communities that are or want to be part of the community cellular telephony network. In addition, the necessary interfaces and software are analyzed for the functioning, management and operation of the networks.

  • Social and Community Mobile Virtual Network Operators (MVNO-SC): This type of community cellular networks do not have their own infrastructure, but can resell the service provided by telecommunications wholesalers. In Mexico, through Red Compartida, Wiki Katat of the Unión de Cooperativas Tosepan Titataniske is the first indigenous mobile virtual network operator in the world. Together with this cooperative, Telecomunicaciones Indígenas Comunitarias A.C., and with the own infrastructure networks it manages, will also offer services like MVNO since 2023.
    This type of networks, although they do not have autonomy directly over the infrastructure, they allow the communities to focus on other fundamental aspects that contribute to the self-determination of the peoples, such as the creation and dissemination of their own content.
    The courses related to this type of network are mainly focused on promoters, and cover topics such as the organizational structure of the network and the user management platform.

    For either type of network, the process of setting up a network and the models of sustainability, organization and management of the networks is discussed during the training, while reflecting on the challenges and possibilities of this type of connectivity projects.

  • What is mobile technology and how does it work?
  • Organizational and economic models of community cellular telephony.
  • Incorporation process of new communities.
  • Coverage analysis.
  • Preparation, foundations and security at the radio base installation site.
  • Preparation and assembly of equipment.
  • Use of Rhizomatica Admin Interface (RAI) tool.
  • Common failure detection and reporting.
  • Use of MVNO user management platform.
  • Sustainability model for MVNO-SC.
  • Dissemination and preservation of proprietary content through an MVNO.
  • Legal framework for the supply of telecommunication services in indigenous communities.

Reference materials

HF radio

High Frequency (HF) refers to the radio spectrum band between 3 and 30 megahertz or MHz, where electromagnetic waves propagate in a straight line, and bounce at different heights in the sky (the higher the frequency, the greater the height), which allows signals to reach distant points.

Because of these characteristics, HF radio has been used for decades to communicate in remote areas isolated from urban centers. It is an economical and easy to use technology that people have used for many years before any other type of communication reached certain areas.

Based on this technology, Rhizomatica has developed the High Frequency Emergency and Rural Multimedia Exchange System (HERMES) that enables data transmission over shortwave (HF) radio.

This open source technology, provides affordable digital telecommunications services over shortwave/HF radio using a simplified visual interface accessed through a smartphone or computer, enabling secure transmission and reception of data (chat, audio, documents, photos, GPS coordinates, etc.).

Since 2019, Rhizomatica has been working in Amazonian communities in Ecuador, Brazil, Peru, Bolivia, and in highland areas such as Chihuahua, Mexico, training the inhabitants of these territories to first install an HF radio. This subsequently allows the installation of the HERMES system because they use the same infrastructure, such as the antenna and the solar energy array.

  • Understanding the electromagnetic spectrum.
  • Wireless communications.
  • HF band frequencies.
  • HF radio components and operation.
  • HF radio power supply.
  • HF radio antennas.
  • HERMES System.

Reference materials
social common core
technical common core