ISM band

(redirected from 2.4GHz band)

ISM band

(Industrial, Scientific and Medical band) A part of the radio spectrum that can be used for any purpose without a license in most countries. In the U.S., the 902-928 MHz, 2.4 GHz and 5.7-5.8 GHz bands were initially used for machines that emitted radio frequencies, such as RF welders, industrial heaters and microwave ovens, but not for radio communications.

In 1985, the FCC Rules (Part 15.247) opened up the ISM bands for wireless LANs and mobile communications. In 1997, it added additional bands in the 5 GHz range under Part 15.407, known as the Unlicensed National Information Infrastructure (U-NII). Europe's HIPERLAN wireless LANs use the same 5 GHz bands, which are titled the "Broadband Radio Access Network."

Numerous applications use the ISM/U-NII bands, including cordless phones, wireless garage door openers, wireless microphones, vehicle tracking and amateur radio. See U-NII.
                      Power LimitISM Bands               (Watts)902 - 928 MHz
   Cordless phones          1 W
   Microwave ovens        750 W
   Industrial heaters     100 kW
   Military radar        1000 kW

   2.4 - 2.4835 GHz
   Bluetooth              100 mW
   Wi-Fi - 802.11b/g        1 W
   Microwave ovens        900 W

   5 GHz
   5.725 - 5.825 GHz        4 W
   Wi-Fi - 802.11a/n/ac


   U-NII 5 GHz Bands
   Wi-Fi - 802.11a/n

   5.15 - 5.25 GHz        200 mW
   5.25 - 5.35 GHz          1 W
   5.47 - 5.725 GHz         1 W
   5.725 - 5.825 GHz        4 W


   60 GHz Band
   57 - 64 GHz (see  WirelessHD and  WiGig)
References in periodicals archive ?
The 2.4GHz band delivers speeds up to 300Mbps, ready for everyday tasks like emailing and web browsing, while the 5GHz band delivers speeds up to 867Mbps, ideal for HD video streaming and lag-free online gaming.
The dual-band AC1200 system is capable of throughput speeds of 300Mbps on the 2.4GHz band and 867Mbps on the 5GHz band--and it supports MU-MIMO data streaming.
Bluetooth Low Energy (BLE), the most prevalent short-range wireless communication technology, transmits signals in the 2.4GHz band. However, the Micro.sp operates in the 433 MHz ISM (Industrial, Scientifical and Medical) frequency, making it less susceptible to path loss and interferences.
TP-Link[R], a global provider of consumer and business networking products, has announced the upcoming launch of the Archer C2700, a next level AC2600 Dual-Band WiFi Router that utilizes Intel[R] technology to provide lightning-fast WiFi at speeds up to 1733Mbps on the 5GHz band and 800Mbps on the 2.4GHz band, the company said.
The AC2200 Wi-Fi system transmits three separate wireless bands for combined speeds of up to 2134Mbps: one 400Mbps 2.4GHz band for surfing, online shopping and audio streaming, and one high-speed 867Mbps 5GHz band for lag-free 4k streaming and gaming, with another 867Mbps 5GHz band as backhaul.
TP-Link has introduced the Archer C2700, a next level AC2600 Dual-Band WiFi Router that utilizes Intel technology to provide lightning-fast WiFi at speeds up to 1733Mbps on the 5GHz band and 800Mbps on the 2.4GHz band.
The dual-band AC1300 system is capable of throughput speeds of 400 Mbps on the 2.4GHz band and 867Mbps on the 5GHz band, and it supports Mu-Mimo data streaming.
It also delivers the Giga-fast Wi-Fi providing simultaneous 2.4GHz & 5GHz dual-band coverage speeding up to 300Mbps on the 2.4GHz band and 867Mbps on the 5GHz band for maximum flexibility for mobile-centric business productivity applications.
In addition to SRDs, YES's accreditation also covers aspects of the testing for Wideband Transmission Systems in the 2.4GHz band and Broadband Radio Access Networks operating at 5GHz.
To handle multiple, resource-intensive tasks without buffer, the Touch P5 router efficiently allocates bandwidth across its dual bands (600Mbps on the 2.4GHz band; 1300Mbps on the 5GHz band) to reach a blazing fast combined speed of 1900Mbps.
So let's take a look at the three most common wireless standards deployed in the 2.4GHz band: Bluetooth, WiFi and Zigbee.
The Archer C3200 Wireless Tri-Band Gigabit Routers operate at a combined speed of up to 3.2Gbps, with two 5GHz bands that reach up to 1300Mbps each and one 2.4GHz band that reaches up to 600Mbps, making it ideal for supporting a large number of wireless devices like smartphones, laptops and other connected devices simultaneously.