Way back when, FSS would have been able to do that, back when they had stations in pretty remote locations. For us in the Tracon, if an aircraft was lost and wanted found, rather than just a course to fly to get to LGB, we would use it to assist in that process. At any time on a nice weather Saturday or Sunday in the greater L.A. area, there would be an average 175 aircraft flying about. In the '70s a bunch of them still did not have a transponder to help in radar identifying them. The L.A. visibility back then was usually about 4 or 5 miles max. So we got a bunch of out of towners who would fly in for Disneyland or whatever, enter the mass of wall to wall housing and development, etc, couldn't see very far, and would become immediately lost trying to find their destination airport (Fullerton frequently). They would call us lost. If they didn't have a transponder with which they could ident, we would first have them just transmit for our DF pointer to point. It would then give us an azimuth direction which to look out on the radar. Unfortunately, since there was no DME involved, they could be any target in that direction from a mile to many miles out from LGB in the pointer's direction. However, then we could start narrowing it down by asking them their heading at that moment. We could then look to see how many of the many targets were going basically in that direction. Then, the we could start giving them turns to specific headings and see who of those targets then turned as requested. Picking the most likely, we would usually give two more heading changes to insure we had the right lost guy/gal. After that, we would call radar contact and vector them to wherever they were trying to go. Frequently, they were lost only a short distance from that location. L.A. area back then with all that smog, easy place to get lost. roger