> In terms of communications capability, W band offers high data rate throughput when used at high altitudes and in space. (The 71–76 GHz / 81–86 GHz segment of the W band is allocated by the International Telecommunication Union to satellite services.) Because of increasing spectrum and orbit congestion at lower frequencies, W-band satellite allocations are of increasing interest to commercial satellite operators, although no commercial project has yet been implemented in these bands.
* https://en.wikipedia.org/wiki/W_band
Certain frequencies in the band seem to be used for near-distance radar:
> However, W-band radar, a relative newcomer in maritime navigation and operating at 76-77GHz, provides the most impressive imagery and accuracy, which is becoming increasingly crucial in the ever more cluttered environs of offshore, nearshore, and inland waterways. It has a range of 500m and is resistant to adverse weather conditions.
* https://www.ship-technology.com/comment/why-w-band-radar-is-...
Automotive applications too:
* https://www.mtu.edu/mtri/research/project-areas/transportati...