has any one heard of or have a zaon flight systems PCAS (personal collision avoidance system)? i was intriqued by an add in flying. it seems you can get a portable traffic avoidance system for a fraction of what a installed system would cost and its small enough to fit in your flight bag. it looks like a really good deal so i was wondering if anybody had experience with the company or their products. the smallest system is only $500 and gives range and relative altitude of traffic within 5 miles while running on 2 AA batteries. take a look at www.zaonflight.com looks like a perfect match for a taylorcraft.