rca space I followed a wikilink to rca space which redirected me to ba space But the ba space article makes no mention of any rca space So what s rca space Is it the same thing or an older term for the same thing or something slightly different Could somebody perhaps whoever ordered or okayed the redirection for example PLEASE define rca space within the ba space article Or recreate the alternative page Either or for clarity so that the term makes sense rather than just leaving a mystery