The Alen Space SDR Rack S-Band is a ground station transceiver for the S-Band band for space operation frequency bands (Uplink: 2025 - 2110 MHz; Downlink: 2200 - 2290 MHz). It integrates the SDR and the frontends necessary for communications with satellites in these frequency bands.

The SDR Rack S-Band requires a computer or server in which the radio data is processed digitally. This information is transmitted to the S-Band SDR-rack via USB cable and it converts this digital information into the analog RF signal sent through the TX ports. Further, the SDR Rack converts it into digital information by sending it via USB to the processing unit (computer or server).

The SDR-Rack allows customers to select if the internal SDR transceiver is used, or, in other cases, customers can connect an external transceiver.