1. Radio Frequency Components
EM Spectrum
RF Spectrum

2. Spectrum
It contains every known frequency (or wavelength) for Electromagnetic Waves EM
The waves range in frequency from 0 Hz to extremely high frequencies
The following charts dissect the EM spectrum based on the Canadian allocation of frequencies

3. Regions of the EM Spectrum
Classification
frequency
wavelength
energy RF
Radio
lowest
longest
Microwaves
Light
Infrared light
Visible light
Ultraviolet light
Rays
X-rays
Gamma rays
highest
shortest
The electromagnetic spectrum is divided up into 3 major regions: radio frequencies, light and rays.
The lowest frequencies have the longest waves and the lower energy content.
The highest frequencies have the shortest waves and the highest energy content.

4. General RF (Radio Frequency) Spectrum
The EM spectrum contains all the frequencies in the universe.
Hence, the EM spectrum contains the Radio Frequency (RF) spectrum.
The RF spectrum goes from Very Low Frequencies (VLF) to Extremely High Frequencies (EHF).

5. Radio Spectrum Radio Band Frequency Some Applications
Very Low Frequency VLF
3 KHZ to 30 KHz
Radio Navigation
Low Frequency LF
30 KHz to 300 KHz
Long Wave Radio
Medium Frequency MF
30 KHz to 3 MHz
AM Radio
High Frequency HF
3 MHz to 30 MHz
CB Radio (HAM)
Point to Point Radio
Search and Rescue Services
Very High Frequency VHF
30 MHz to 300 MHz
FM radio MHz
VHF Broadcast TV
Ultra High Frequency UHF
300 MHz to 3 GHz
UHF Broadcast TV
Cellular Phones
Microwave Links
Wi-Fi in 2.4 Band
Satellite Communications
Super High Frequency SHF
3 GHz to 30 GHz
Wi-Fi in 5 GHz Band
Extra High Frequency EHF
30 GHz to 300 GHz

6. Source: http://www. ic. gc. ca/eic/site/smt-gst

7. The frequency bands shown here are:
VLF (3-30 KHz)
LF ( KHz)
MF (300 KHz to 3 MHz)
HF (3–30 MHz)
VHF ( MHz)
Source:

8. The frequency bands shown here are:
UHF (300 MHz to 3 GHz)
SHF (3 GHz to 30 GHz)
EHF (30 GHz to 300 GHz)
Source:

9. Detail of Ultra High Frequency UHF Band
WiFi allocated in the ISM sub-band
Source:

10. Detail of Super High Frequency SHF Band
WiFi allocated in the ISM sub-band
Source:

11. Detail of Extra High Frequency EHF Band
There is an ISM sub-band (but is it assigned?)
Source:

12. Spectrum represented in wavelengths
Sound and low frequency electrical signals
All RF (radio frequency) bands
Notice: microwave covers UHF, SHF and EHF
Light (IR, visible, and UV)
Gamma rays
Cosmic rays
Source:

13. RF Spectrum
Human kind has found ways to use the available (by the universe) electromagnetic spectrum.
The most widely deployed usage is radio telecommunications from a range of a few Kilohertz to dozens of Gigahertz.
The other range used in telecommunications is the range of infrared and visible light that lays in the Terahertz order.