ISM bands
WiFi is aimed at use within unlicensed spectrum - the ISM or Industrial, Scientific and Medical bands. These bands have been internationally agreed and unlike most other bands, they can be used without the need for a transmitting licence. This gives access to everyone to use them freely.
The ISM bands are not only used by Wi-Fi, but everything from microwave ovens to many other forms of wireless connectivity and many industrial, scientific and medical uses.
Whilst the ISM bands are available globally, there are some differences and restrictions that can occur in some countries.
The main bands used for carrying Wi-Fi are those in the table attached
Source: https://www.electronics-notes.com/articles/connectivity/wifi-ieee-802-11/channels-frequencies-bands-bandwidth.php
ISM Bands
Created: Dec 12, 2019 12:51:54Latest reply: Dec 19, 2021 20:07:37
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