Last-mile for HAMNET
A big design goal is to build a last-mile radio link for the HAMNET network. The propagation characteristics of the 70cm band make it useful for user-access to the HAMNET.
There will be APIs and protocol documentations for deep integration with custom new protocols. Also the hardware is released under an open-source license.
A multiple access scheme is currently under development. The flexible TDMA/TDD scheme will enable multiple users to share a single base station.
The protocol stack and the software are currently under development and are by no means finished yet.
Designed for long distances. This 2 Watt version was the first iteration of the HRD70 design. It is perfectly suited for long distance communication and features an 33 dBm linear amplifier and a SAW filter. The power-supply section is using a modern DC-DC converter design.
USB stick format. Can be used in a city environment where the next base-station is close. Has an output power of 100 mW and was designed as a cost-reduced version of the HRD70 for affordable prototyping. The small form-factor makes it extremely portable.