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skinnyc
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I've contacted uAvionix about this, and I'm waiting for a reply as I believe it's a SkyEcho2 problem. However, I thought I'd post the issue on here too just in case.
Here's the scenario: 2 aircraft on the ground right next to each other (less than 5m apart). Both turn on their SkyEcho2 and SkyDemon at about the same time. One aircraft can see the other on SkyDemon, the other can't. Both aircraft can see other aircraft on SkyDemon. The issue is still there once airborne. It's not a time based issue - waiting does not fix it. Turning off SkyEcho2 and turning it back on again fixes the issue.
It's not always happening. A group of 4 aircraft also experienced the same issue in the scenario described above. Other users have reported the same issue within my group of pilots. All with their own aircraft, SkyEcho2 and SkyDemon.
It does seem to be something to do with the aircraft being very close together when SkyEcho2 and SkyDemon are started up.
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EHOW flyer
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Some questions: - Is the ADSB out function switched ON in Skyecho?
If one aircraft sees another, is this based on the ADSB function of Skyecho, or is the 'seen' aircraft also equipped with an Mode-S transponder with ADSB-out? Is the ADSB LED blinking? Has the Skyecho moved to another aircraft without changing the HEX code belonging to the new aircraft?
Remarks:Aircraft not moving or moving below a preset speed in Skyecho will not transmit their position, so will not be seen by other Skyecho's.
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Tony N
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Is there any possibility of one aircraft's SD locking onto the other aircraft's SE2 WIFI signal, especially as they are in close proximity on the ground?
Doesn't explain why the issue is still there when airborne though....
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skinnyc
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All units have ADSB out enabled. All units are using SkyEcho only for ADSB out and in. No other ADSB equipment (like a transponder) is being used by anyone. All units have ADSB light blinking. All units are connected to their own SkyDemon and each has a unique hex code to match. There is no cross-sharing.
EHOW flyer said: "Aircraft not moving or moving below a preset speed in Skyecho will not transmit their position, so will not be seen by other Skyecho's." The above statement does not match what we are seeing. All units have a Vso of 10. All units are stationary on the ground. Yet some of the units can see each other and therefore some units are broadcasting location despite being stationary.
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skinnyc
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Does anyone know how SkyDemon treats “on the ground” signals from SkyEcho 2.
uAvionix say that if an aircraft is moving at less than Vso knots, then SkyEcho 2 transmits an “on the ground” signal. Vso is a setting in SkyEcho 2 setup.
On getting this signal does SkyDemon still display the aircraft?
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Tim Dawson
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Yes, we just won't generate any warnings for it.
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skinnyc
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+xYes, we just won't generate any warnings for it. Hi Tim,
I'm, not asking if you generate any warnings.
Here's what I want to know:
Two aircraft are stationary on the ground and their SyEcho2 units are both sending out an "on the ground signal". Does SkyDemon show both aircraft on it's display?
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Tim Dawson
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It's not clear from your question which display you're talking about. Is this a display in a third aircraft, with a third ADS-B receiver? If so, the answer is yes.
If the display is in one of the two aircraft you're referring to, then hopefully it wouldn't display its own aircraft as traffic - it should already be displayed as the "ownship".
But as I said above, an ADS-B signal with the "on the ground" flag set is still displayed.
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skinnyc
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Hi Tim,
Thanks for the reply.
I’ll try and explain but I think you’ve answered my question anyway: SkyDemon will display aircraft that are transmitting “on the ground” ADSB signal.
The scenario:
2 aircraft on the ground.
Both stationary.
Both using a SkyEcho2 with SkyDemon.
They will each see each other on the SkyDemon display (but not themselves on their own SkyDemon display).
If I’ve got that wrong then please correct me.
Cheers,
Chris
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PaulSS
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Why would they show when they're on the ground? The whole idea of the 'on the ground' signal is so they don't show up and cause nuisance warnings to those in the air e.g. I don't want my receiving kit to see you at the holding point when I'm on Final and start bleating at me.
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grahamb
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+xWhy would they show when they're on the ground? The whole idea of the 'on the ground' signal is so they don't show up and cause nuisance warnings to those in the air e.g. I don't want my receiving kit to see you at the holding point when I'm on Final and start bleating at me.
It can display it without bleating about it. Good compromise if you ask me.
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Tim Dawson
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Paul, the location of aircraft on the ground can be useful. If you read what I wrote, you'll see that I mentioned that we ignore such aircraft for the purposes of generating alerts.
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Peter Robertson
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That sounds extremely sensible to me Tim. Best of both worlds compromise - you can see any Aircraft taxiing which might inadvertently encroach onto the runway, but are not distracted by unnecessary (audio or other) ‘warnings’.
Regards
Peter
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Tim Dawson
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skinnyc
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So, the next question (for Tim) related to this:
If a user of SkyDemon and SkyEcho2 has not set the aircraft profiles up to be identical in both SkyDemon and SkyEcho (a common one is to forget hex code in SkyDemon setup), a warning is presented in SkyDemon stating that aircraft do not match.
If a user dismisses that warning and continues to use the SkyEcho2 and SkyDemon for their flight, how is the display of their aircraft treated in SkyDemon by other SkyDemon / SkyEcho2 users? Is it ignored (not shown)? Is it still shown?
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Tim Dawson
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That's down to your SkyEcho 2 configuration. Perhaps it's worth reading the manual for that product? SkyDemon warns you about possible configuration mismatches but it's your responsibility to make sure your SkyEcho 2 device(s) are set up to transmit the correct details for your aircraft.
If you had your current aircraft in SkyDemon set up with a certain hex code, but that was incorrect, then a potential problem would be that SkyDemon would ignore any reports of traffic with that hex code. Because it would think it was getting a report of the aircraft you're flying. So it is important to get that right.
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skinnyc
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Hi Tim,
"That's down to your SkyEcho 2 configuration. Perhaps it's worth reading the manual for that product? I have read the SkyEcho2 manual and configured SkyEcho2 correctly.
My issue is / was with SkyDemon and the way it displays aircraft when using SkyEcho. More specifically trying to debug an issue.
The SkyDemon manual I have read too. It doesn't say that the details of the aircraft being used in SkyDemon must explicitly match those of the SykEcho. Yes you get a warning message when you "Go Flying", but several users I know have just ignored the warning for a couple of reasons:
- In SkyDemon they had not set a Hex code. This is because they had never needed to set a Hex code. Therefore it was left empty / unset. This is what happened to me too.
- Then when they got the warning they couldn't figured out what the issue was. This was my case too. I had my Hex code in SkyDemon empty and hadn't realised that this needed to be set.
- The next thing that compounded the issue was changing the Hex code on one SkyDemon device (for example iPhone) and not explicitly syncing the aircraft with the cloud after making the change. This meant when they used another device (for example iPad) for flying the Hex code was not updated in the aircraft setting being used. They needed to get the aircraft again from the cloud.
I'm putting the above info on this post as if it can happen to 5 or 6 different users that I know, it might help others who are also experiencing the same issues.
Cheers,
Chris
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EHOW flyer
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I suggest to show the aircraft (or airport vehicles) in 'ground mode' in a different color.
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