Holy crap, it works for distances up to 120m using a custom built antenna. 
<a href="https:&#x2F;&#x2F;youtu.be&#x2F;8HV70b-DpE0?t=23m46s" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;8HV70b-DpE0?t=23m46s</a><p>Though $50 will get you enough of an antenna, amp and SDR to get started...