====== ISM Band ======
The ISM radio bands are portions of the radio spectrum reserved internationally for //industrial, scientific, and medical// (**ISM**) purposes, excluding applications in telecommunications. Examples of applications for the use of radio frequency (RF) energy in these bands include RF heating, microwave ovens, and medical diathermy machines. The powerful emissions of these devices can create electromagnetic interference and disrupt radio communication using the same frequency, so these devices are limited to certain bands of frequencies. In general, communications equipment operating in ISM bands must tolerate any interference generated by ISM applications, and users have no regulatory protection from ISM device operation in these bands.

Despite the intent of the original allocations, in recent years the fastest-growing use of these bands has been for short-range, low-power wireless communications systems, since these bands are often approved for such devices, which can be used without a government license, as would otherwise be required for transmitters; ISM frequencies are often chosen for this purpose as they already must tolerate interference issues. Cordless phones, Bluetooth devices, near-field communication (NFC) devices, garage door openers, baby monitors, and wireless computer networks (Wi-Fi) may all use the ISM frequencies, although these low-power transmitters are not considered to be ISM devices.

=== The ISM bands ===
^designation^Midband^Frequency Range^Availability^Application Areas^Applications in the band|
|-|**6,78 MHz**|6,765 - 6,795 MHz|according to local regulations|mobile services||
|-|**13 MHz**|13,553 - 13,567 MHz|Worldwide|mobile services, aeronautical communication (helicon double-layer ion thruster)|[[:com:basic_wiegand|Wiegand]], [[:com:basic_rfid|RFID]], [[:com:basic_nfc|NFC]]|
|-|**27 MHz**|26,957 - 27,283 MHz|Worldwide|CB, mobile services, aeronautical communication| [[:com:basic_nfc|NFC]]|
|-|**40,68 MHz**|40,66 - 40,7 MHz|Worldwide|satellite broadcast communication, mobile services||
|-|**433,92 MHz**|433,05 - 434,79 MHz|Europe, Africa|radio amateur communication| [[:com:basic_rfid|RFID]], [[:com:basic_nfc|NFC]], [[:com:basic_dash7|DASH7]], [[hu:arduino:radio_comm#hc12|HC-12 Arduino modul]]|
|**UHF ISM**|USA: **908,42 MHz** \\ Europe: **868,42 MHz**|USA: 902 - 928 MHz \\ Europe: 865 - 868 MHz|America \\ Europe|radio amateur communication|[[hu::com:basic_zigbee|ZigBee]], [[:com:basic_rfid|RFID]], [[:com:basic_nfc|NFC]], [[:com:basic_dash7|DASH7]], [[:com:bus_other_wireless#z-wave|Z-Wave]]|
|**S-band ISM¹**|**2,4 GHz**|2,4 - 2,5 GHz|Worldwide|radio amateur and satellite communication, microwave power transmission, induction heating, wireless modems|[[:com:basic_bluetooth|Bluetooth]], [[:com:basic_bluetooth#ble|Bluetooth LE]], [[:com:basic_wifi|Wi-Fi]], [[hu::com:basic_zigbee|ZigBee]], [[:com:basic_rfid|RFID]], [[:com:basic_nfc|NFC]], [[:com:bus_other_wireless#thread|Thread]], [[:com:bus_other_wireless#miwi|MiWi]], [[:com:basic_nrf24|nRF24]]|
|**C-band ISM²**|**5,7 GHz**|5,725 - 5,875 GHz|Worldwide|radio amateur and satellite communication, wireless modems|[[:com:basic_wifi|Wi-Fi]]|
|**UWB**|**3,1..10,6 GHz**|3,1 - 10,6 GHz|Worldwide|UWB, "pulse radio"||
|Ku-band|**11 GHz**|10,95 - 12,7 GHz|Worldwide|satellite communication|Starlink Downlink|
|Ku-band|**14 GHz**|14,0 - 14,5 GHz|Worldwide|satellite communication|Starlink Uplink|
|Ka-band|**18 GHz**|17,3 - 18,6 GHz|Worldwide|satellite communication|Starlink Downlink|
|Ka-band|**28 GHz**|27,5 - 29,1 GHz|Worldwide|satellite communication|Starlink Uplink|
|-|**61,25 GHz**|61 - 61,5 GHz|according to local regulations|satellite communication||
|-|**122,5 GHz**|122 - 123 GHz|according to local regulations|satellite communication||
|-|**245 GHz**|244 - 246 GHz|according to local regulations|satellite communication||

¹: The S-band frequency range: 2-4 GHz \\
²: The C-band frequency range: 4-8 GHz \\

source: https://en.wikipedia.org/wiki/ISM_band