Both the LXNAV TrafficView & the Air-Avionics ATD-57 are similar and a big improvement in visibility and the way the targets are displayed. The TrafficView also has a navigation function.
http://www.craggyaero.com/air_traffic_display.htm
http://www.craggyaero.com/trafficview.htm
Richard
www.craggyaero.com


Will either of them display targets from an adsb-in receiver, such as the Scout?