I was doing some tests on Sunday which involved monitoring the radio traffic between PWUKTIB and my PAW, and (on later analysis) noticed the following oddity.
Here's a normal packet of uplinked FLARM data from a club glider:
TIME S ID LONG LAT ALT TRK SEQ KTS AC CS
144127 24 a9e1dd 6076933f 9bc35142 e401 d100 00000000 1900 11 7c
But here's some more data from two other aircraft:
TIME S ID LONG LAT ALT TRK SEQ KTS AC CS
144026 24 765f40 5f185242 8a1f933f f300 5301 07000000 5d00 1e c6
144458 24 dc1640 4b195242 1ceb8a3f f300 9d00 02000000 4c00 1e 90
It appears the longitude and latitude are swapped. Looking at the track file I have entries labelled "INV" at exactly these times, which I guess means invalid. Nothing appears on James's replay app. Sleuthing around a bit, it seems these were MLATed aircraft that passed close to Tibenham.
Hope this is of interest!
Alan
