在射频频谱中，频段也称为频率。频段是特定的频率范围，其中频率从极低频分为极高频率，每个频段都有其上限和下限。
例如，非常低的频率，低频(其频率范围分别为3KHz-30KHz和30KHz-300KHz)等。
频率范围：
从一个极限频率延伸到另一个极限频率的连续范围或频谱。 RF中存在不同类型的频率，这些频率彼此不同。
下面分别根据它们的频率范围，传播及其应用(使用这些频率的地方)给出它们之间的差异。
| Bands | Frequency Range | Propagation | Application |
|---|---|---|---|
| Very Low Frequency (VLF) | 3KHz-30KHz | Ground | Long range radio navigation |
| Low Frequency (LF) | 30KHz-300KHz | Ground | Radio Broadcasting and navigational locator |
| Medium Frequency (MF) | 300KHz-3MHz | Sky | Radio Broadcasting, AM Radio, Land |
| High Frequency (HF) | 3MHz-30MHz | Sky | Citizen band/Aircraft/Ship Communication |
| Very High Frequency (VHF) | 30MHz-300MHz | Sky and Line of sight | Amateur Radio, Radio Navigation, VHF T.V. and FM Radio |
| Ultra High Frequency (UHF) | 300MHz-3000MHz | Line of sight | VHF T.V., cellular Phone, Paging, Satellite |
| Super High Frequency (SHF) | 3GHz-30GHz | Line of sight | Mobile, Radio Navigation, Space and Satellite Communication |
| Extremely High Frequency (EHF) | 30GHz-300GHz | Line of sight | Radar, Amateur radio, satellite and space exploration |