welll. i dont know for sure where it was coming from but i definitely heard factory floor operations. confirmed those were on the warren fcc app - might be also other locations. I wonder if all there locations are going trbo. Also for whoever put the system in the DB there is a 6 channel max on capacity plus. The identified freq's were 861.4125 861.5375 861.5875 861.7875 861.5375 861.8125