In this mini-conf a classroom of people will solder together their very own software defined radio (SDR) transceivers in just a few hours. It will be capable of receiving signals on the HF radio bands (3 to 30 MHz), and short range transmission of FSK/PSK data on the 13.5 and 27 MHz ISM bands (no license required).
The project is being documented on our OpenRadio Wiki. It’s completely open source and we have published the PCB CAD files, and the parts list with Digikey/Element14 catalogue part numbers. It’s based on the soft-rock radio designs.
We have put a lot of effort into making the radio easy to build. For example a minimum of (large footprint) surface mount parts, and a simple, fast to assemble design. We have intentionally included one or two inductors and transformers to wind to give people a taste of the complete radio assembly experience. With a little supervision, the project is quite suitable for radio/electronics beginners or school age children. It’s a “crystal set” for the 21st century.
Mark has done a great job designing the radio, and we have just received the prototype PCBs:
This week we will assemble and test the first prototypes, measure how long they take to build, and noting possible snags for inexperienced builders. Then our good friend Edwin from Dragino will prepare and ship kits for the mini-conf.
The resources we create for this project (wiki, CAD files, software, kits from Dragino) will remain available after LCA. So you, your radio club, hackerspace, or even school class will have access to an easy to build a Software Defined Radio (SDR).