Interference
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
[Labeling requirement in Part 15.19]
Description
Of course, interference is typically the state of the signal you are interested in while it’s being destructively overpowered by a signal you are not interested in.
The FCC has a specific definition of "harmful interference”:
Part 2.1(c) Harmful interference - Interference which endangers the functioning of a radio-navigation service or of other safety services or seriously degrades, obstructs, or repeatedly interrupts a radio-communication service operating in accordance with these [International Radio] Regulations.
In Part 15 it is repeated as:
Part 15.3(m) Harmful interference.
Any emission, radiation or induction that endangers the functioning of a radio navigation service or of other safety services or seriously degrades, obstructs or repeatedly interrupts a radio communications service operating in accordance with this chapter.
Interference will be a factor in your deployment. The 2.4GHz band is a bit more congested than the 5.8GHz band, but both have co-users that you must consider (see Table A-1).
Table A-1. Spectrum allocations for 802.11b and co-users
|
Part / Use |
Start GHz |
End GHz |
|---|---|---|
|
Part 87 |
0.4700 |
10.5000 |
|
Part 97 |
2.3900 |
2.4500 |
|
Part 15 |
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