| Class | Abbreviation | Range | Applications |
| 1. extremely low frequency | ELF | 30-300 Hz | 110 VAC Power |
| 2. voice frequency | VF | 300-30000 Hz | Telephone Data Modems |
| 3. very low frequencey | VLF | 3-30 KHz | Home Security |
| 4. low frequencey | LF | 30-300 KHz | Cicaria's Experiments |
| 5. medium freq. | MF | 300-3000 KHZ | AM Radio |
| 6. high frequency | HF | 3-30 MHz | HF, CB Radio |
| 7. very high frequency | VHF | 30-300 MHz | FM Radio Pecaesat Experiments, TV |
| 8. Ultra high frequency | UHF | 300-3000 MHz | TV |
| 9. Super high frequency | SHF | 3-300 GHz | IntelSat |
| 10. extremely high frequency | EHF | 30-300 GHz | None |