What is S band application?

A single S-band boom antenna on each satellite (deployed after launch by a pyrotechnic device) enables the satellite to communicate with Earth . There are small backup antennas on the top of each satellite to provide backup communication as required.

S-band is used for an extensive range of cross-industry applications, including surface ship radar, weather radar, navigational assistance, vessel identification and tracking, air traffic control, inflight Wi-Fi and spacecraft telemetry .

In the context of satellite communications (SATCOM), the term narrowband (NB) generally refers to the ultra-high-frequency (UHF)-, L-, and S-bands , where available bandwidth is limited compared to the higher-frequency bands.