The overhead wires for the electric trams (buses) here cause strong RFI on fringe stations on the AM band, but not strong enough to interfere with local broadcasts. _______________________________________________________________________________
Ralph McDiarmid | Schneider Electric | Solar Business | CANADA | Regulatory Compliance Engineering From: Doug Powell <doug...@gmail.com> To: EMC-PSTC@LISTSERV.IEEE.ORG, Date: 02/05/2015 11:47 PM Subject: Re: [PSES] How cops are catching grow ops with AM radios. 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… http://www.policeone.com/drug-interdiction-narcotics/articles/8224280-How-cops-are-catching-grow-ops-with-AM-radios/ Ken _______________________ Kenneth Wyatt Wyatt Technical Services, Inc. 56 Aspen Dr. Woodland Park, CO Phone: (719) 310-5418 Email Me! | Web Site | Blog The EMC Blog (EDN) Subscribe to Newsletter Connect with me on LinkedIn - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to < emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to < emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
