3-Series Control System™ Crestron MC3
Appendix A: The RF Spectrum
Crestron’s RF network provides 16 RF channels in the 2.4GHz ISM* band,
specifically IEEE 802.15.4 channels 11 through 26. The 16 channels define the
frequencies at which the RF device will communicate.
RF devices on different channels will not communicate or interfere with each other.
However, since some of the channels are in the 2.4GHz ISM band (as shown in the
following diagram), interference can occur with other devices using this band, such
as 802.11b/g Wi-Fi devices, Crestron infiNET devices or Zigbee devices, although
the differing protocols will not allow a link to be established or data to be
transferred. Wireless 2.4GHz telephones and microwave ovens may also cause
interference with the network.
IEEE 802.15.4 channel selection (2400 MHz PHY)
Channel 11
(802.11b/g)
Channel 6
(802.11b/g)
Channel 1
(802.11b/g)
Channel
11
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
22 MHz
2 MHz
2483.5 MHz
2480
2462 MHz
2465 2470 247524602445 2450 24552440
2437 MHz
2435243024252420241524102405
2412 MHz2400 MHz
Wi-Fi (802.11b/g)
RF (802.15.4)
* Industrial, Scientific and Medical; refers to frequency range used for unlicensed
communication applications, such as Wi-Fi.
38 • 3-Series Control System™: MC3 Operations Guide – DOC. 7095D