EIRP: Effective Isotropic Radiated Power, the product of the power supplied to the antenna by the radio transmitter and the absolute gain of the antenna in a given direction.
ERP: Effective radiated power. The product of the power supplied by the radio transmitter to the antenna and the gain of the antenna relative to the half-wave dipole in a given direction.
Users can use this tool to calculate these two values. The software is simple to operate and professional. Very convenient and practical.