Originally Posted by
ApolloHeli
It surprisingly works - if you're bored it's great to try. Over land at typical helicopter altitudes it might not be possible to discern from ground clutter, but out over the water I've had a crossing (at 90°) S-92 return (1000' below, perhaps 7-8nm away) make it's way across the radar display before - the greater cross section likely helped. We couldn't believe it at first, but it was backed up by a lone TCAS diamond in the vicinity of the radar return, as well as us eventually visually identifying the aircraft outside.
S92 crossing your track is quite a big target so maybe paints easier. Tried it on reciprocal tracks in IMC a few times (high closer rate; lower mass targets). I’ll twiddle a bit more to see if something paints cross-track.