Digi XBee - Serial Interface

XBee® Wi-Fi RF Modules
© 2013 Digi International, Inc. 40
The center frequencies of the 13 possible channels range from 2412 to 2472 MHz, with
each channel being 22 MHz wide and centered in 5 MHz intervals. This means that only
3 channels (1, 6, and 11) in North America are not subject to overlapping.