why the 5 Ghz , its free and do not need any license while the 2.4Ghz requires License

[Ibrahim Jamil]

Hi all

why the 5 Ghz , its free and do not need any license while the 2.4Ghz requires License 

thanks to all 

[George Stefanick]

Both are unlicensed .. 

[Ibrahim Jamil]

bro George

so which band is licenced 

thanks 

[George Stefanick]

The bands 900,2.4 and 5 are unlicensed. Many of the other frequncys are licensed. 

[mohanak]

To use licensed radio bands, a license must be obtained from a government agency. This requirement is true of all users of these radio spectrums. A few of the uses of licensed radio bands are as follows:

• AM broadcast (short wave between 1.711 MHz–30.0 MHz, medium wave between 520 kHz–1,610 kHz, and long wave between 148.5 kHz–283.5 kHz )

• FM broadcast (87.5 to 108.0 MHz)

• Cellular phones (840 MHz)

In the larger electromagnetic spectrum, which includes the radio spectrum, the licensing of infrared and X-ray spectrums also exists.

Some of the types of unlicensed radio bands are as follows:

• Industrial, Scientific, Medical (ISM): This type includes several medical monitors and other devices that operate in the 900-MHZ, 2.4-GHz, and 5-GHz bands.

• Unlicensed National Information Infrastructure (U-NII): This type defines the specifications for the use of wireless devices such as WLAN access points and routers in the 5-GHz band.

[Ibrahim Jamil]

thanks mohanak for the explanation

[datekar.amit]

Thanks mohanak,

Thankis for the valuable information.