Effective Radiated Power Calculator


In the realm of telecommunications and broadcasting, understanding the Effective Radiated Power (ERP) is crucial. ERP calculates the power transmitted by an antenna, considering its gain and efficiency. This article introduces an effective radiated power calculator, simplifying complex computations for engineers and enthusiasts alike.

How to Use

Using the effective radiated power calculator is straightforward. Input the required parameters into the designated fields, and the calculator will swiftly compute the ERP for you.


The formula for calculating Effective Radiated Power (ERP) is as follows:

ERP=Transmitter Power × Antenna Gain × Efficiency

Example Solve

Let’s consider a scenario where:

  • Transmitter Power (P) = 100 watts
  • Antenna Gain (G) = 10
  • Efficiency (η) = 0.8

ERP=100×10×0.8=800 watts

So, the Effective Radiated Power (ERP) in this case is 800 watts.


Q: What is Effective Radiated Power (ERP)?
A: Effective Radiated Power (ERP) is a measure of the power that an antenna radiates in a specific direction, considering both the transmitter power and antenna characteristics.

Q: Why is ERP important in broadcasting?
A: ERP helps broadcasters determine the coverage area and signal strength of their transmissions, crucial for delivering reliable communication services.

Q: How does antenna gain affect ERP?
A: Antenna gain amplifies the signal in a particular direction, increasing ERP and improving signal strength within the coverage area.

Q: Can ERP be greater than transmitter power?
A: Yes, if the antenna gain and efficiency are sufficiently high, ERP can exceed the transmitter power.


Understanding Effective Radiated Power (ERP) is pivotal in optimizing communication systems. By leveraging the effective radiated power calculator and comprehending its implications, engineers can enhance the efficiency and reliability of their broadcasting endeavors.

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