The Industrial, Scientific, and Medical (ISM) band is actually several portions of the electromagnetic spectrum that has been set aside internationally for use without a license for uses other than communications. The frequencies for the ISM band are as follows:

• 902 - 928 MHz (.902 - .928 GHz)
• 2.4 - 2.4835 GHz (2,400 - 2,483.5 MHz)
• 5.15 - 5.825 GHz (5,150 - 5,825 MHz)
• 57 - 64 GHz (57,000 - 64,000 MHz)