Thu Mar 14, 2013 1:09 pm
Curiosity got the better of me. What I discovered as far as Wifi channels 12, 13 and 14 in the US, according to the FCC, is that there are restrictions so they do not interfere with other higher assigned frequencies. Channel 14 is not permitted at all because it clearly interferes with another assigned frequency band, and channel 12 and 13 are permitted as long as special field strength limits are adhered to, taking into consideration both power level and antenna db gain. Router manufacturers just use Channels 1 -11 to avoid all of this.
Here are the assigned frequencies at and near Wifi (2.4 GHz).
2400 - 2450 MHz (ISM Equipment, Amateur Radio)
2450 - 2483.5 MHz (ISM Equipment, TV Auxiliary Broadcasting, Private Land Mobile, Fixed Microwave)
2483.5 - 2500 MHz (ISM Equipment, Satellite Communications, Wireless Communications)
Wifi Channels and Frequencies:
Channel 1: 2.412 MHz
Channel 2: 2.417 MHz
Channel 3: 2.422 MHz
Channel 4: 2.427 MHz
Channel 5: 2.432 MHz
Channel 6: 2.437 MHz
Channel 7: 2.442 MHz
Channel 8: 2.447 MHz
Channel 9: 2.452 MHz
Channel 10: 2.457 MHz
Channel 11: 2.462 MHz
Channel 12: 2.467 MHz
Channel 13: 2.472 MHz
Channel 14: 2.484 MHz
My Raspberry Pi Project Page:
https://www.flaminghellmet.com/launch/