For the development of the communication components of AS-VLEOSAT1 the following institutes are responsible:
Implementation in IAP-SRWRDA Project (2014):
This realization allows only receiving.
The next step is to make a realization both suitable for receiving and sending.
One possible open-source HW is HackRF or LimeSDR instead of DVB-RTL Stick. Block diagram of HackRF:
HackRF Schematic: