The Electromagnetic Spectrum
Below are two tables. The first is the General Electromagnetic Spectrum. This will give you an idea where the Radio Spectrum sits in the scheme of things. You will notice it sits well below everything else, even visible light. That means the most advanced radio recievers in use today still can't hang with your eyeballs.

The second table shows the allocation of the Radio Spectrum, with some notes on what goes where. To fully view both, you will have to scroll left.

General Electromagnetic Spectrum.


0 Hz 1 Mhz 100 Mhz 1 Ghz 100 Ghz 108 1010 1012 1014 1016 1018 1020
Allocation Radio Radio Radio Microwave Microwave Microwave
Infrared (IR) Some Infrared
Visible Light
Some UV
Ultra Violet (UV)
Gamma Ray
Gamma Ray Gamma Ray
Cosmic Ray

Radio Spectrum

Frequency 10 Khz - 30 Khz 30 Khz - 300 Khz 300 Khz - 3 Mhz 3 Mhz - 30 Mhz 30 Mhz - 328.6 Mhz 328.6 Mhz - 450 Mhz 450 Mhz - 470 Mhz 470 Mhz - 806 Mhz 806 Mhz - 960 Mhz 960 Mhz - 2.3 Ghz 2.3 Ghz - 2.9 Ghz 2.9 Ghz - 30 Ghz 30 Ghz - . . . .
Allocation VLF (Very Low Freqency): Shortwave (5 Khz to 30 Mhz), Power Line Locating Equipment, Electrical Tranmission.  LF (Low Frequency):  Shortwave (5 Khz to 30 Mhz), International Fixed Service, Maratime Fixed Service, Aviation and Maratime Beacons, LORAN-C Navigation Systems.  MF (Medium Frequency):  Shortwave (5 Khz to 30 Mhz),   Air Traffic Control, AM Radio, Cordless Telephones HF (High Frequency): CB Radio, Shortwave (5 Khz to 30 Mhz) , Cival Air Patrol, US Navy MARS, Amature, Time & Frequency Broadcasts, Ship to Shore Telephone, Radio Astronomy VHF (Very High Frequency): FM Radio* (88 -108), TV Channels   2 - 13(174-216), Land Mobile UHF (Ultra High Frequency): TV Channels 14 - 83 UHF (Ultra High Frequency) UHF (Ultra High Frequency) UHF (Ultra High Frequency): Cellular & Cordless Telephone UHF (Ultra High Frequency) UHF (Ultra High Frequency) SHF (Super High Frequency) EHF (Extremely High Frequency)



* Channel 1 - Which is suspiciously missing from your TV set, was actually the FM band. In the early days of television, the FCC believed that FM radio should have a set of frequencies allocated to it. At the same time, David Sarnoff, RCA's CEO, was pushing the FCC to set aside the tech available set of frequencies for 13 television channels. Pissed at Sarnoff's pushyness, and believing that FM radio sets were going to be more affordable than the then $700 television sets of the day, they set aside channel 1 for FM broadcasts, between 42 Mhz and 50 Mhz. After WWII, the FCC moved FM to the 88 Mhz to 108 Mhz we use today, and gave the rest of channel 1 to the Land Mobile radio class for use by cabbies and police dispatchers.
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by: Andrew Krause