With the increase of traffic alert systems (portable) on the G. A. market I would ask if many use these systems and if so would appreciate comments on the suitability and effectivness of the same, this posting is not intended as a debate on traffic alert systems, however, that would be welcomed.
At a price of approx £500 these aren't cheap so can't think many carry them in their flightbag etc and I suppose if other aircraft aren't transponder equiped or perish the thought not switched on (that never happens does it

) it makes them u s, comments apprciated.