Why does radio band jump from 300-300MHz for UHF straight to 1-2GHz for SHF/L band? What’s between 3000-9999MHz?

Question

This using the IEEE standard for radio bands if that wasn’t apparent

In: Other

Answer 1

There is a lot of stuff in that range. Digital TV broadcasts, radio astronomy, mobile phones, and many others.

https://www.ntia.doc.gov/files/ntia/publications/2003-allochrt.pdf