Hi again Trevor,
No, just select CAP1391 and press 'GO' - and if that doesn't report, select ADSB (and 'GO') instead.
Probably a bit more technical than this... but the problem (as I understand it) is that because the OGN network doesn't differentiate between DF17 (the type of 'ADSB' signal transmitted by a GPS-equipped transponder) and DF18 (the type transmitted by SkyEcho), the Vector tool can't readily find your CAP1391 data if it was mainly reported by OGN sites.
p.s. I had worked out yesterday what the problem was likely to be, as I remembered we had a problem with this a few weeks back, but was busy doing something else at the time and by the time I got back to the laptop to respond, Chris had already done so.
Best Regards
Peter
p.s. Chris, neither AlanG or myself can get your link to work