I'm digging up this old matter of debate because after some searching im more confused than before. First of all E2000 has three antenna's 2 x main antennas 1,5dBi 1 x antenna 2.2dBi RF Power (EIRP) in dBm 17 dBm according to the Data Sheet and according to the Tech Specs Antenna Gain in dBi 2.4 GHz:≤ 2 dBi 5 GHz:≤ 5 dBi How Cisco calculates the gain and generaly how do we calculate the gain when we have antennas with different dBi and dual (2.4/5) frequency? Now let's come to DD-WRT wiki page The wiki advises to set 50mW because the EIRP rating is 17dBm but if we set to 50mW then we exceed the EIRP rating because 50mW Transmit Power = 17dBm EIRP = Transmit Power + Gain - Cable/Connector loss EIRP of E2000 = 17dbm + 2dBi = 19dBm @ 2.4Ghz EIRP of E2000 = 17dBm + 5dBi = 22dBm @ 5Ghz we dont know loss but it should be minimal with 3 ufl connectors and a few cm of wire (0.1~0.3) just guessing. Anyway in both cases we exceed the EIRP rating of the device and i think that Wiki is wrong. The default value of E2000 @ 2.4Ghz should be 32mW/15dBm so that we match technical specs of the device. EIRP = 15dBm Tx Power + 2dBi Gain = 17dBm What do you think? Am i right or wrong? Anybody can estimate the Loss so that we can have a more accurate calculation? Anybody can calculate the Gain exactly based on three antennae? And final question....anybody knows the stock tx power value?