I have the Dynon HDX system with dual 10” screens with an Avidyne 540 with upgrades Dynon AP and adsb. I have had adsb issues since getting my plane back from panel upgrade. At first it was a setting issue that helped some, but not fully. Then we thought antenna coax being over 8’ was an issue, so we moved antenna, it was not a solution. A new update came out and we hoped it would help the problem per some research we had done, it actually made the problem worse, much worse. I’m in ADSB partial mode over 50% of the time, my plane is hangared right outside DFW so there’s no lack of reporting stations. I’ve searched the threads and saw a post on this subject from this summer, does anyone have a solution? Please help, I don’t like having to fly with a sentry with my new full glass panel. Any insight would be appreciated.
ADSB Partial Issue
- Thread starter Mark Ary
- Start date
mikelupo
Member
Like you, I was having issues.
forum.flydynon.com
Seems you're talking ADS-B in. Have a look at the Dynon Installation guide. You can download it here: https://dynonavionics.com/skyview-documentation.php. Section 14 outlines a few things that you MUST have to get reliable ADS-B in.
1) A dedicated antenna.
2) The guide also says, "Although weather and TFR information (FIS-B services) are available any time the SV-ADSB-470/472 is in an ADS-B ground station coverage area, ADS-R TIS-B traffic is only available if a SV-XPNDR-261/262 with ADS-B OUT capability is installed and is providing ADS-B OUT position reports into the ADS-B system."
* Taking note the last sentence. Do you have a SV-XPNDR-261/262 installed or are you using another brand? If the latter is true, I'd ask Dynon if the install guide was being specific about that point.
So, to point 2, in order to be a "participating" aircraft, you must also be giving a good ADSB-out signal.
You can find out if your ADS-B out signal is good or not. https://adsbperformance.faa.gov/PAPRRequest.aspx
You'll get a report emailed to you. It's kinda cool, very geeky, but has the information on there to help you determine if our "out" is a factor of your "in" problem.
Aside from those requirements, a good ground plane is necessary for your antenna. If this is on a fully metal airframe/skin then that's not the issue.
Then there are the integration pieces.
Check your serial inputs. When my Avionics shop came to do my Transponder/altimeter check, i am almost certain they changed a serial setting unawares.
'ADS-B STATUS' in settings is grayed out
I'm curious as to why the menu item would be grayed out. I don't recall seeing this before. I get no messages while flying that the transponder or ADS-B out isn't working. I've not flown behind the panel enough (very new install) to know if I'm getting weather indications (i.e. radar shading) or...
Seems you're talking ADS-B in. Have a look at the Dynon Installation guide. You can download it here: https://dynonavionics.com/skyview-documentation.php. Section 14 outlines a few things that you MUST have to get reliable ADS-B in.
1) A dedicated antenna.
2) The guide also says, "Although weather and TFR information (FIS-B services) are available any time the SV-ADSB-470/472 is in an ADS-B ground station coverage area, ADS-R TIS-B traffic is only available if a SV-XPNDR-261/262 with ADS-B OUT capability is installed and is providing ADS-B OUT position reports into the ADS-B system."
* Taking note the last sentence. Do you have a SV-XPNDR-261/262 installed or are you using another brand? If the latter is true, I'd ask Dynon if the install guide was being specific about that point.
So, to point 2, in order to be a "participating" aircraft, you must also be giving a good ADSB-out signal.
You can find out if your ADS-B out signal is good or not. https://adsbperformance.faa.gov/PAPRRequest.aspx
You'll get a report emailed to you. It's kinda cool, very geeky, but has the information on there to help you determine if our "out" is a factor of your "in" problem.
Aside from those requirements, a good ground plane is necessary for your antenna. If this is on a fully metal airframe/skin then that's not the issue.
Then there are the integration pieces.
Check your serial inputs. When my Avionics shop came to do my Transponder/altimeter check, i am almost certain they changed a serial setting unawares.
airguy
Well-Known Member
The last software update from Dynon included a change in the panel verbiage from "ADSB No Radar" (meaning not receiving radar traffic uplink from the ground) to "ADSB Partial" (relying on direct transponder pickup only). I also have noticed that I spend a stupidly inordinate amount of time displaying "ADSB Partial" even at high altitude (mid-teens) with ten or more stations in range for the ADSB receiver.
- Joined
- Jul 19, 2010
- Messages
- 274
ADSB Partial means we do not have the "status" message (our tail number in the data) from a ground station. We used to fail down to "Partial" if even one of the stations we were receiving wasn't sending the status message. We recently did an update that would show ADSB-OK if at least one of the stations we are receiving have the status message. It's supposed to mean we don't necessarily have a full traffic picture, but that is not always the case.
Is there any way in which the requirement to see the towers can be over-ridden to get rid of the ADSB Partial message? In the UK we don't enjoy the same joined-up structure available in the US. Consequently, we see ADSB Partial all the time because there are literally no towers to see and get TIS A/B. We are 1090 ADSB In and Out and that's it. It works well but the constant message implying something is amiss (which I suppose it is) is a bit annoying. Turning off TIS would, maybe, be the way to enable NOT seeing the message.
Thank you for the information, my adsb out works flawlessly, not an issue at all with it. When I’m on adsb partial which is most of the time I have no weather or notams, it’s annoying I’m only getting air to air traffic.Like you, I was having issues.
'ADS-B STATUS' in settings is grayed out
I'm curious as to why the menu item would be grayed out. I don't recall seeing this before. I get no messages while flying that the transponder or ADS-B out isn't working. I've not flown behind the panel enough (very new install) to know if I'm getting weather indications (i.e. radar shading) or...
Seems you're talking ADS-B in. Have a look at the Dynon Installation guide. You can download it here: https://dynonavionics.com/skyview-documentation.php. Section 14 outlines a few things that you MUST have to get reliable ADS-B in.
1) A dedicated antenna.
2) The guide also says, "Although weather and TFR information (FIS-B services) are available any time the SV-ADSB-470/472 is in an ADS-B ground station coverage area, ADS-R TIS-B traffic is only available if a SV-XPNDR-261/262 with ADS-B OUT capability is installed and is providing ADS-B OUT position reports into the ADS-B system."
* Taking note the last sentence. Do you have a SV-XPNDR-261/262 installed or are you using another brand? If the latter is true, I'd ask Dynon if the install guide was being specific about that point.
So, to point 2, in order to be a "participating" aircraft, you must also be giving a good ADSB-out signal.
You can find out if your ADS-B out signal is good or not. https://adsbperformance.faa.gov/PAPRRequest.aspx
You'll get a report emailed to you. It's kinda cool, very geeky, but has the information on there to help you determine if our "out" is a factor of your "in" problem.
Aside from those requirements, a good ground plane is necessary for your antenna. If this is on a fully metal airframe/skin then that's not the issue.
Then there are the integration pieces.
Check your serial inputs. When my Avionics shop came to do my Transponder/altimeter check, i am almost certain they changed a serial setting unawares.
I just installed a new stick and ball antenna hoping that would help but it didn’t change anything, plane is grounded properly. I suspect maybe when my update was done my adsb module didn’t get updated separately. I do have SV-XPNDR-261-262.