The 90 GHz band is globally harmonised through the International Telecommunication Union's Recommendation ITU-R F.2004 for microwave technology.

ITU-R F.2004 defines radio-frequency channel arrangements for fixed service systems operating in the 92 to 95 GHz range. Each country develops its own specific operating conditions based on the global ITU-R recommendation, covering information such as antenna sizing, minimum distance requirements, and geographic coordination.