In this lesson, we shall understand about the various Radio Frequency Bands. We had understood about the relationship between the Speed, Wavelength and Frequency in our earlier lesson. Radio Waves are classified into various bands based on their frequencies
FREQUENCY – WAVELENGTH – RADIO AIDS
- Very Low Frequency (VLF) bands have have a frequency range from 3 to 30 KHZ and a Wavelength of 100 to 10 KM. These frequencies are used by Submarieners for communication purposes.
- Low Frequency (LF) bands have a frequency range between 30 and 300 KHz and wavelength of 10 to 1 KM. These frequencies are used for Non-Directional Beacons (NDB).
- The frequency range of Medium Frequncy (MF) bands are between 300 and 3000 KHz and wavelengths between 1000 to 100M. These frequencies are used in Long Range NDBs.
- High Frequency (HF) bands operate between 3 to 30 MHz with wavelength between 100 and 10 M. HF frequencies are used in Long Range Communication.
- Very High Frequency (VHF) range between 30 and 300 MHz with Wavelengths between 10 and 1 M. These frequencies are used for VHF Communication and Navigation.
- Ultra High Frequncy (UHF) bands have a frequency range from 300 to 3000 MHz and a Wavelength of between 100 to 10 CM. These frequencies are used in Instrument Landing System (ILS).
- Super High Frequncy (SHF) bands have a frequncy range between 3 to 30 GHz which translates to 10 to 1 Cm. These frequncy bands are used in Radar Equipment.
- Extremely High Frequency (EHF) bands operate between 30 and 300 GHz with Wavelengths between 10 and 1 MM. These frequencies are used for Satellite Communication.
In this post, we have understood about the various Radio Frequency bands and their use in aviation, We shall understand the terms Phase and Phase Difference in our next lesson.