Hi Neil, I recieved the minelab probe a couple of weeks ago and I'm not sure what you mean about the minelab pinpointer not interfering with your detector. I have an MXT Pro and when I am detecting and I find a target, I turn on the minelab pinpointer to find the target and my MXT Pro starts making all kinds of noise (interference). I have to either take my headphones off or turn off the detector so that I don't hear the interference from the probe. When the minelab pinpointer probe is off everything is back to normal. Could I have recieved a bad minelab pinpointer? Thanks. Al