Posts Tagged ‘ISM’

WiFi Basics Part 1 – Frequencies and Channels

Tuesday, March 10th, 2015

This is news to me. I never realized that wireless frequencies were set aside way back in 1947. In addition to that fun fact, the article also provides a helpful overview of wireless communication in general.

In 1947, the International Telecommunication Union (ITU), a UN agency, designated certain bands of the RF spectrum as ISM. The idea was to have an international standard of frequencies that were reserved for Industrial, Scientific, and Medical equipment. Ironically, telecommunications was not the original purpose.