The maximum EIRP possible is 36 dBm for either band (6. Pls check this Ciscolive presentation for better understanding above concepts. Effective Isotropic Radiated Power (EIRP) is the amount of power transmitted by the antenna of a device. For United States, the transmit power can be 100.

They regulate radio communications, In the context of this thread FCC is referring to the amount of transmit power allowed versus CE which is more-or-less a European equivalent. So you have to balance AP Tx power to match clients to get better results.Īs example, your AP may be capable of Tx 23dBm, but phone 10-14dBm, in that case better to limit your AP Tx power 8-17dBm range rather increase it to max 20 or 23dBm The maximum transmit power is limited by the CE/FCC regulation and the laws of your own country. FCC is the United States Federal Communication Commission. But as clients has low Tx power, AP cannot hear it well. The FCC’s recent rule changes expanded unlicensed use in the 5.925-6.425 GHz and 6.525-6. You have to always remember other end is client devices (phones, tablet, pc) which usually does not have that much Tx power (due to handheld devices and battery life time is so important)Īs you can see below, if AP Tx power is too high, you will get a good signal strength for client, then client try to transmit higher data rate. If the duty cycle is reduced from 100, then the spurious emissions limits are effectively increased and more transmitter output power is allowed for FCC. However, automated frequency coordination will bring the flexibility and the range of Wi-Fi in the 5 GHz band, but with 6 GHz performance. This sounds like increase Tx power is a good idea.Īctually it is not a good idea though.

Transmit power is directly translated to energy of the wave, so higher the transmit power, you will see wave goes further.

Maximum fcc for wifi transmit power