Our neighborhood has most of the electrical underground. Except, for the transformer pedestal 50 feet from my front door. Not much in the way with interference on GMRS, 2m and 70cm bands. Although, I mostly just listen. So I couldn't tell you how it affects transmit purity. One of my neighbors a couple of blocks over has his long wire slung in the trees. He doesn't have any complaints on any of the bands. Well I take it back, he was complaining about all the vegetation interfering with his satellite play time. http://k3rrr.com/ Now the plethora of Plasma screen T.V.s in my neighborhood make trying to listen to HF with the SDR is another story. Should mention I have neighbors up real close to all sides of my house. Close enough my kids watch his living room T.V. from our living room.