I'm kind of in favor of
operating-area myself, with a synonym
shack. That would be approachable by people who are not familiar with the jargon, as well as provide the (largely) equivalent term for those who are familiar with the jargon. The tag wiki could go something like the shack, or operating area, is the space where... (fill in the blank). It also allows for both those who are lucky enough to be able to dedicate a room to their radio operating, as well as those who are stuck at the kitchen table with a handheld radio.
Google for "Amateur Radio" operating area returns about 5.6 million hits, whereas "Amateur Radio" "operating area" gives me 21,300 hits, including a number of fairly official-looking pages on the first page of hits.
setup, IMO, has the same potential dual meaning as
installation so I'm not sure
ham-setup would be a good name for a tag. Besides, we're already at ham.SE; my feeling is that tags shouldn't need to add redundancy just to be understandable. (Consider: "what other kind of setup is discussed on ham.SE?")