It picks up most aircraft in a non-radar environment as most aircraft are transponder equipped.
My bolding.
See
Dick, there you go again. How do you
know most aircraft are transponder equipped? You could approach Temora and see two TA's but not see the other three non transponder equipped aircraft. If they do not have a transponder you cannot know that they are not there. CLEAR?
Which funnily enough is an argument I heard used on the hugely successful
John & Martha King Roadshow TM, people rely on the radio and therefore stop "looking" for the non radio traffic.
Same, same.
Then again
most doesn't really help does it. One mid air is enough