10-30-2009 Post does not mapped to Knowledge Tree montepilot Boston, MA. Posts 42 Joined on 12-13-2007 Post #: 1 Post ID: 12095 Reply to: 12095 Help with RF loop fiogf49gjkf0d I am in the process of setting up a DAW to record fm broadcast.  Recently I installed a M-Audio 2496 DAC in a computer to do the recording.  I am using a Yamaha T-85 tuner.  Prior to routing the i.c. cables through the DAC I had no background noise from rf interference.  In other words going direct from the tuner to my preamp it was noise free. A local audio guy told me I probably have a RF loop in my connections. Since he did not elaborate I was hoping someone on the forum could help me understand what an RF loop in my connection is and how to solve it. Currently I have a set of I.C. going from the tuner to the M-Audio dac and a set of I.C. going from the dac to the preamp. Any suggestions would be greatly appreciated. Rgs. montepilot "It's like an act of murder; you play with the intent to commit something"--Duke Ellington