Originally Posted by
le Pingouin
Then why are you asking about low cost, low reliability units? They won't allow anything of the sort to be used for separating traffic. $100,000 was the rough figure for an ADS-B ground station installation I think.
A basic safety certified unit will not cost anything like that. Probably more like a third.
However there is a big increment in cost if you have to add all the infrastructure - tower, power, and comms. But if you have infrastructure in place (a typical mobile phone tower for example) then the installation costs can be minimal. Of course if you have to pay space rental to the mast provider that has to be factored into the through-life cost.