title: GNU Radio Companion - How to calculate average power of a signal
body: <p>How can I calculate the average power of a signal within a certain bandwidth and store that value in a variable that I can reference for later?</p>
  
  <p>For example, I have a low pass filter 15kHz wide, I want to know if there's a tool in GNU Radio Companion that will allow me to calculate the average power over a certain time to see if the power level passes a threshold.</p>