US ham radio operators are helping police catch indoor marijuana growers who are causing RFI interference.

Reported in Police One magazine, it has been noted that a flood of reports from Ham Radio operators in relations to interference being heard on equipment from neighbours growing marijuana.

The highest level of complaints have been received in California and Colorado.

One amateur radio operator located five marijuana grows near his house due to RFI alone! Many ham operators can locate a grow simply by taking a radio and portable antennae out into their neighborhood and using the radio to triangulate the exact location of the grow."

Full article - http://www.policeone.com/drug-interdiction-narcotics/articles/8224280-How-cops-are-catching-grow-ops-with-AM-radios/