I know vocal annunciators still on the wish list, but I was under the impression that there should be the usual buzzer alert.

I had a contact with a Mode C target crossing in front (red ring) at the same altitude on Saturday so would have expected some kind of warning other than the visual one.

I hear beeps, whistles and buzzes for everything else (including positional contacts in threatening positions) so my ipad seems to be working ok.

I was hoping to not have to bother with the Pilotaware audio output, but if SD can't raise the alarm then I'll have to revisit it.

Actually the traffic source categorises them.

Given how many there are, and how we have no idea where they are or whether they're a threat, we think it would be unhelpful to show alerts for them. If your traffic source offers this functionality and you want it, you have a solution.