bonking
n.— «You find that the digital signal cant get thru the concrete and steel so you get the “out of range” bonking noise—which means you have to go over to a window so you can lean out to get a repeater to receive your signal.» —“Detroit Fire Dept. Message Board” Marquette County Firefighters Home Page (Detroit, Mich.) Jan. 5, 2004. (source: Double-Tongued Dictionary)