Thank you James, I hadn't noticed that hovering worked! As the PAW traffic page uses A for ADS-B I'd assumed that Aircrew did the same, and therefore couldn't work out what B was.
On 'static', I attach a track file. At 12:41:22 over Newport Pagnell PA28 G-COVA is shown as ACSPUM and 'static' - though clearly it isn't as there is a track. The aircraft NNE and NW of G-COVA are also labelled 'static' as are several other aircraft.
A couple more queries:
There are several gliders visible at 12:41:22 (including two to the south of my aircraft) shown as PU. I assume that, as FLARM is widely carried by gliders, but probably not many have PAW, these are FLARM outputs provided to me by Upload - correct? The use of P rather conceals the source; is every U accompanied by a P, ie does P just indicate an 869.5MHz transmission rather than specifically a PAW output? I also note NW of Banbury a glider with just P - I assume that this is a glider with a PAW unit.
At 12:46:15 C-GKOA (which I imagine is a Brize Skyvan paradropper) is manoeuvring around Weston-on-the-Green and shown as ACS - but no M or U. I would therefore have thought that it should be a bearingless target, but it is shown with a position.
So many questions! Apologies, but this display is fascinating!
Trevor