The Ohio Argus Array detects transient narrowband and broadband radio signals from arbitrary locations in the sky. Ohio Argus detects narrowband radio sources, such as orbiting satellites. Argus doesn't "point" at a satellite like a dish-type antenna would have to. Instead, Ohio Argus detects that a signal is "present" in the data collected from the elements of the array, and then mathematically figures out the location of the satellite in the sky.
Ohio Argus also detects the sun, and is able to localize it accurately in the sky. Other strong celestial sources are just outside Argus's detection limit, however, with the possible exception of Cygnus X and Cas A. An expanded Argus and/or more sensitive receivers will be able to detect much fainter celestial radio sources.
But Argus is still useful at detecting local radio emitters. Take aircraft, for example. At certain frequencies, Argus can detect some jets as they approach and depart Port Columbus International Airport. The jets are either broadcasting the signals detected by Argus, or they are reflecting radio waves which are emitted from a transmitter somewhere in the general area.
While current plans for the expansion of Argus are on hold - pending new volunteers with RF experience ready to take charge - the volunteers who run the day-to-day operation of the Array can benefit from additional help in other areas. These areas include software development, spare parts assembly and testing, fund raising, site maintenance, and other activities not related to the Argus Array, through NAAPO, the North American Astrophysical Observatory.