I have no direct experience of PCAS, most of the people I know who have tried it were not impressed, but maybe the new units are better. With this in mind I have some basic questions;
If the unit requires radar to activate the transponder in order to see the target, then I assume it will not work at low level – say up to 2000 ft ish in a normal environment?
Assuming I am flying straight at another aircraft with mode c, at 2500 ft, what sort of range would I typically pick up the other contact?
I did seriously consider a unit some months ago, which is why I estimated the non transponder traffic in my local area and decided it was a non starter.
Rod1