Height filters and Alpha midnight?

[Cuddles]

Does your unit work with height filters in place, and if it does, do A0000 (SSR data unreliable) codes pop through the filter, as the 75,76,7700 codes do?

I was working yesterday when an A0000 indicating FL576 or thereabouts was brought to my attention by another unit. It had been filtered out, and was actually at 4A. Thankfully none of my traffic was anywhere near it, but I'll be popping the height filter off a lot more regularly now.

[MacDoris]

This very subject popped up on the LTCC breifing a few days ago and basically says your low height filter should be set to zero for this reason. So now on some sectors you get to look at Loads more traffic just cluttering up the tube.