What are the ISM bands?
The Industrial, Scientific, and Medicine (ISM) frequency bands were allocated by the Federal Communications Commission (FCC) in the mid 1980’s. The bands encompass the frequency ranges 902 – 928 Mhz, 2400 – 2483.5 Mhz, and 5725 – 5850 Mhz. The advantage of the ISM bands is that they are unlicensed as long as a device operating in the ISM bands meets special FCC regulations. While many devices operating in the ISM bands use spread spectrum modulation, the FCC does permit narrowband modulation techniques to be used (provided that the respective device meets stringent power requirements).
