What is correct term when describing frequency range of 3 kHz to 300 GHz?

The frequency range of 3 kHz to 300 GHz is referred to as "radio frequency" (RF) spectrum. This range encompasses various types of electromagnetic waves used in communications, broadcasting, and radar applications. It includes subcategories like Very Low Frequency (VLF), Low Frequency (LF), Medium Frequency (MF), High Frequency (HF), Very High Frequency (VHF), Ultra High Frequency (UHF), Super High Frequency (SHF), and Extremely High Frequency (EHF).