ianmalc,
I'd really appreciate it if you could post your findings of when you are in Singapore (where you set up / what you saw). I am in Singapore and have just bought a RB, but I'm unable to track anything because the only ADS-B messages I am picking up is from aircraft 50-100 miles away flying over Malaysia, and only occasionally. I even sat on Changi Beach, which is pretty much right at the end of the runway, and didn't receive a thing as they flew straight over my head. Mode-S is coming through fine.
I'd like to know if something is wrong with my RB or whether Singapore really is some strange ADS-B black hole.
Thanks,
Mark.