Radio Frequencies

Discussion of Chart audio mp3

Dr. Knezek begins with the discussion of the chart, then moves to a discussion of the PDF below. Blair Copeland has provided some additional information to help organize the audio discussion.pdf

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 frequency VLF 3-30 KHz Home Security 
4. low frequency LF 30-300 KHz Cicaria's Experiments
5. medium frequency 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

View the FCC and NTIA Table of Frequency Allocations chart to see how radio frequencies in the US are allocated.

2003 Allocation Chart