What is the Federal Communications Commission (FCC) regulation for the maximum equivalent isotropically radiated power (EIRP) from a point-to-multipoint (P2P) wireless local area network (WLAN) antenna?

The maximum equivalent isotropically radiated power (EIRP) regulation set by the Federal Communications Commission (FCC) for point-to-multipoint (P2P) wireless local area network (WLAN) antennas is indeed 4 watts (W). This regulation is crucial because it ensures that wireless communication does not cause interference with other communication systems and complies with safety standards.

EIRP is a measure of the power radiated in a given direction from an antenna, and it takes into account both the transmitter power and the gain of the antenna. The limit set by the FCC helps maintain a balance between effective communication range and preventing signal overlap that could disrupt other wireless services.

Understanding this regulation is vital for field technicians as it guides equipment selection and installation practices to ensure compliance with federal laws. Operating above this limit could lead to license violations and potential penalties.