The ranges from 27.5-29.1GHz, 29.5-30GHz, 47.2-50.2GHz, and 50.4-51.4GHz are used to send information from the gateways back up to the satellites. Transmissions from the customer's terminal back up to the satellites in orbit are handled in the ranges from 14-14.5GHz, 47.2-50.2GHz, and 50.4-51.4GHz. Gateways are locations on the ground that can send and receive data from satellites to connect satellite internet users to the websites and other internet services that they wish to use. The ranges from 17.8-18.6GHz, 18.8-19.3GHz, and 37.5-42.5GHz are used for satellite to gateway transmissions. The measured gains are 28.5 dBi at 20 GHz and 32.25 dBi at 30 GHz. An 18 × 18-cm 2 prototype has been fabricated and tested, showing a good matching with the simulations. To be more specific, ranges from 10.7-12.7GHz and 37.5-42.5GHz are used for the transmission of data from Starlink satellites to the customer's terminal on the ground. The FSS has been designed to be transmissive at 12 GHz (downlink frequency in Ku-band) and reflective at 20 and 30 GHz. The antenna sizes, ranging from 0.9m -1.8m (6ft), are much smaller than C band because the higher frequency means that higher gain can be achieved with small antenna sizes than C-band. Starlink also uses the V band, which is the range of 40-75GHz, as well as dipping into the X band and K band, which are the ranges of 8-12GHz and 18-27GHz respectively. Ku (K band Under) band is used typically for consumer direct-to-home access, distance learning applications, retail and enterprise connectivity.

However, due to the lower frequency range, it performs better under adverse weather conditions on the ground. Because of its weaker power it requires a larger antenna, usually above 1.8m (6ft). The Ka band is the range from 27-40GHz and the Ku band is 12-18GHz. uplink 5.925-6.425 GHz downlink 3.7-4.2 GHz The C band is primarily used for voice and data communications as well as backhauling. On March 29, 2018, the FCC authorized SpaceX to provide broadband satellite internet services using the Ka and Ku bands.

Ku band downlink frequency