Ground Infrastructure of TUM Center of Space Technologies is composed of the following:

  • Two telemetry stations (200 km between them )
  • Observatory with Celestron Telescope

The general architecture of the National Center of Space Technologies Ground Stations is presented in the figure below and it is compo

As we can observe from the picture, the station can operate in the two main radio amateur bands for communication with small satellites. These bands are the VHF ( 2m ) and UHF ( 70 cm) band.

The antennas that are used in the ground station (X-QUAD) are both directional antennas, which involves using a system for directing them to the desired point. The system used for this purpose consists of an antenna rotator (BIGRAS) and a controller (Rotator controller MD-01).
The antennas, mounted on the mast, are connected with RF ecoflex cable to the LNAs (Low Noise Amplifiers). X-Quad 70cm and X-Quad 2m to LNA SP70 and LNA SP200 respectively. The next node connected from the LNAs consists of coaxial relays which split the signal for feeding it into the ICOM IC-9100 and USRP B200/E310 to be further processed.

Besides the main RF connections there is also a data line connection from the PC Ground station to the signal processing units (ICOM and USRP) and a control line connection to the rotator controller and relays.
The NCST has two ground stations. The main one is in Chisinau, Moldova and the second is in the southern part of the country.

Full documentation regarding ground stations can be accessed  Ground_Revision_0.1:

Fig.1 Ground Station Architecture

Fig.1 Ground Stations Location