EIRP stands for Equivalent Isotropically Radiated Power.
The calculator below will calculate the EIRP knowing the transmitter output power in dBm, the transmitter antenna gain in dBi, and the cable and connector attenuation. If the cable and connector attenuation is not known a zero value is accepted.
Australian Legal Limits 2.4 - 2.5 GHz*
Frequency Band
Maximum System Power EIRP
Channel 1-9 2.40 - 2.463 GHz
4 Watts (36dBm)
Channels 10-13 2.463 - 2.471 GHz
0.2 Watts (23dBm)
5.725 - 5.875 GHz
1 Watt (30dBm)
*Please check with the relevant authorities for current legal limits.
