FISHnFLY wrote:

Has anyone flown with any of these new "portable tcas" devices? I
recently got a Monroy ATD-300, which is the lowest price, that gives
range and altitude, but have been very disappointed in the
performance. My experience is that the altitude and range of aircraft
it is reporting are constantly changing drastically.

Thats sad news, I've been interested in the purchase of that model,
mainly because of its "best deal" pricing as well...