The start and end dates are flexible.

In the frame of the project Open6GHub, a communication
subsystem for a CubeSat Engineering Model will be developed
by students. This subsystem is based on a Software Defined
Radio (e.g. LimeSDR Mini 2.0 or similar) and a Raspberry Pi
Compute Module. The SDR is controlled via GNUradio.
The subsystem is developed, built and tested by the group in
accordance with the CubeSat formfactor. The aim is a
functioning subsystem that can receive and decode telemetry.
Knowledge of communication technology, small satellites as
well as basic programming and electronics skills are required.
Experience in PCB design is an advantage.

https://elearning.uni-bremen.de/dispatch.php/course/details?sem_id=9d3f95e57ace881beef7531ab19c3669&again=yes