Ken,

This is great. These people who are dialing 560 AM are likely just dialing their radio to a spot between local broadcast stations. Almost any frequency around that band will do just fine.  It's very possible a scanner radio can be used as well.  

I sometimes do this sort of thing when driving around town and sometimes hear strong RF noise coming from traffic lights at intersections.  ‎These lights are apparently exempt from FCC regulation. The stated reason I have heard is they are exempt for reasons of public safety.  It's really about keeping costs as low as possible.  

‎Where I live in Northern Colorado, they caught a guy running a grow operation  because an REA electrician who was replacing a pole pig transformer and noticed an abnormally high load from one house. I am not certain how it all transpired but further investigation found a fairly large operation.  

All the best, Doug

Douglas Powell
http://www.linkedin.com/in/dougp01  
From: Ken Wyatt
Sent: Thursday, February 5, 2015 4:51 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Reply To: Ken Wyatt
Subject: [PSES] How cops are catching grow ops with AM radios.

A interesting use of RFI…


Ken

_______________________
Kenneth Wyatt
Wyatt Technical Services, Inc.
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Woodland Park, CO

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