What is Duplex

The intention of this chapter is to increase capacities in educators for using computer- and communicationrelated technologies and to help them to acquire systematic knowledge in basic computer networking and communicating with their peers, other teachers, students and their parents. In form of introducing ‘packet-radio’, one of the most popular amateur radio computer-related communication modes, the mission of this chapter is to motivate teachers and students to use the amateur radio hardware and software for designing AMUNETs – the Amateur Radio University computer Networks – within their school buildings and around university campuses. The purpose of this chapter is to involve scholars to the world of amateur data exchange in an easy way by describing simple experiments related to networking simulations in local area networks. The goal of those experiments is to provide enough knowledge and experience with the amateur radio software before starting experimentations with real radio devices.