bedder beleivit
your knowledge of radar is a very welcome addition to the thread. as many of us know radar sep is required to be more conservative the farther from the radar antenna.
it would be odd, but believable if the secondary and primary were confused by someone leading to the idea of a turnback.
anyway, I do wish we would get an actual statement from authorities about the way the radar was being used, but there might be a military secret or something else involved.
all I am suggesting is that the searchers may be looking in the wrong spot.
being a good old rooting tooting American, I'm betting our ships and planes spot it before anyone else.
;-)