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

So uhm…OP, 1Ghz = 1000MHz, 9999MHz = 9.999GHz. The ITU defines UHF as between 300MHz and 3GHz (3000MHz), and SHF as between 3GHz and 30GHz.

So the simple answer is there is no giant empty block of radio, your maths is just wrong.