5GHz radios operating in UNII-3 band (5.725-5.850GHz) are regulated to 36dBm EIRP. My 450M radios are capable of transmitting at this level, yet my 450i radios are limited in the UI to 27dBm. Why is there this limitation on 450i? Both cases are using 40Mhz channels.
Are you using the 450i’s with the integrated antenna or are they connectorized? The 450i supports a maximum TX power of 27dBm, however depending on what antenna is being used and if the antenna gain field is filled out correctly, the radio may be limiting the TX power to conform with regulatory EIRP limits.
Not certain. Sounds like the only means to achieve 36dBm EIRP is to use an antenna for extra gain then? Presumably, if there were an external antenna used, this would be configured in the “external gain” field, which it’s not.
450i’s with integrated antennas will set the EIRP to whatever the regulatory limit is. As an example, a 450i AP with 17dBi integrated sector antenna will set it’s TX power to 19dBm (36dBm EIRP) automatically when being used in 5.7-5.8GHz.