title: How to Capture the radio frequency through android programmatically?
body: <p>I am going to create a app which should be able to tracks, captures and records the nearest radio frequency and then decode the received signal. I want to do it without any extra hardware and just doing it by code.</p>
  
  <blockquote>
    <p>note: no tag is available and just by signal itself. </p>
  </blockquote>
  
  <p>How can I do that?<br />
  thanks</p>