The transceiver is the device which receives and transmits signals, typically ranging from VHF (very high frequency) to UHF (ultra high frequency) with communication purposes through the antenna. The main function of a communication module is to realise the communication with ground and other spacecraft as well as spacecraft tracking. It has undergone spacecraft environmental testing to ensure high quality.
The video shows the endurosat transceiver integrated circuit.
The graphics are kindly provided by EnduroSat http://endurosat.com