In the old sense of hack. http://hackaday.com/2015/04/07/build-a-phased-array-radar-in-your-garage-that-se es-through-walls/ ------ Tom Ring K0TAR EN34hx 2010 Jetta 2.5 - MAC #42 HS - Don't Panic! 1985 Westfalia Vanagon Camper "CAPSLO" "It is better to go into a turn slow, and come out fast, than to go into a turn fast and come out dead." Stirling Moss