Messages

1

Technical Support / Re: Ghosting?

« on: November 13, 2017, 10:28:47 pm »

Lee,
Thanks for looking into this.

However, I have some doubts that this bit of the flight is where the initial reported in flight conflict/ warning occured

I certainly did come close to him at the location indicated above and would hope that  it would have generated the report you highlighted - because, if I am reading it right, that was at Cromer airfield where we both landed( and the time coicides with his final approach and touchdown as I entered the  circuit at around 600ft under low cloud - the time matches Dave landing and my touchdown some two minutes later.

His inital report ( as described to me by Dave himself) of the in flight conflict alert was some minutes earlier than that when he was west of Cromer at around 1000ft agl and I was some fifteen miles further west than that and quite likely several thousend feet higher than him.

Ishall send my file to you tomorrow in the hope it might help.

2

Technical Support / Re: Ghosting?

« on: November 06, 2017, 06:21:17 pm »

All understood, thanks ( and absolutly no need to worry about airing possible failures, we are all here to learn).

Pretty sure our ADSB was working at the time for two reasons:

1) In the event of loss of gps, the Trig flags up an ADSB error message on the screen and we saw none.
2) I reviewed the  Flarm .igc trace after the event and it shows solid gps logging all the way on that flight.

As I mentioned earlier, I shall send the trace ( via dropbox) on my return to the office next week.

PS range at the time of reported hiccup was in region of 15Nm ( not km), not that it makes much difference other than it being even more unlikely that Dave would have seen a TT21 pure Mode S alert at that range.

3

Technical Support / Re: Ghosting?

« on: November 06, 2017, 07:34:00 am »

I'll pop mine over when I am next in the office but that will not be until 13th Nov.

4

Technical Support / Re: Ghosting?

« on: November 05, 2017, 09:42:05 pm »

You should get a PilotAware, then you could see the rest of us! 

And you can connect the PowerFlarm into it, so you'd get the lot.

Not a bad idea Paul and one that we will most likely do soon.

However, as far as I can see no one has answered the OPs' query as to why he was seeing us labelled up close to him and at a similar height, when we were transmitting ADSB-out from fifteen or more miles west of him and some 3000 ft above.

Ideas?

5

Technical Support / Re: Ghosting?

« on: November 03, 2017, 05:43:16 pm »

I was flying G-CCZD that day and can confirm that the ADSB was functioning correctly.

At the time of the reported alert, we we some 15 miles west of the OP at around 5000ft and travelling eastwards at some 150kts. We continued in an essentially staight path descending along the way to join the circuit and land at Cromer about 4 or 5 minutes after the OP, so not quite catching him up along the way but flying a similar track at an overtake speed of around 60kts.

We did not see anythng ( even bearlingless) on PowerFlarm from him because either he was only outputting Pilotaware rather than mode c or s ( I cannot remember if I asked if he had transponder on board) or more likely, because he was still some 6 miles or so ahead of us when he landed.

We have PowerFlarm and Trig TT21 taking the gps from the Flarm for ADSB feed.

I am away from my office at present but could upload a flight log to dropbox on my return if that might be of some help.