ADS-B Traffic Symbology?

[jeffa]

Can someone clarify if there will be different traffic symbology if I'm seeing an ADS-B equipped airplane?  If so, were can I find the various types?  The current Skyview pilot's guide doesn't mention any different symbols.  I thought there was going to be different types intermixed with the "classic" TIS symbols.  Am I not seeing any ADS-B aircraft simply because very few are currently equipped?  Or, do all the aircraft (ADS-B and non-ADSB) look the same?

Only one short flight so far with the SV-ADSB-470, but really liking it.  The Freeflight 1201 seems to be working as advertised also.

 

[dynonsupport]

We did not change traffic symbology for ADS-B targets. We didn't see a good reason to make people learn new symbols.

Note that you can only get TIS OR ADS-B traffic data at a given time. So if it says "ADS-B Full" in the corner like it does in your screenshot, all your data is coming from ADS-B. The way the ADS-B system works, there really isn't much difference for an airplane that was captured because it had ADS-B out vs one that was captured due to radar, so there isn't really much for us to show you as a difference if we wanted to.

 

[DonFromTX]

Now I am confused. From earlier pictures on the Dynon site, I thought we would see a yellow box with "traffic" indicating where the traffic was. Has this changed?

 

[dynonsupport]

If the yellow box "TRAFFIC" appears in the corner it means you have an actual threat, based on the fact that the aircraft could actually impact you within about 20 seconds. This is the same as TIS, and it is this indication that also causes the audio alert "TRAFFIC". Not all traffic is a direct threat. We never used this box to indicate the direction of the traffic however.

You should read the traffic section in the user manual, starting on page 7-18.

 

[DonFromTX]

Thanks for the reference, after lots of reading I am beginning to understand what is going on.

 

[lolachampcar]

The description of ADS-B in and out and what information is available in the Pilot's guide pg 7-20 is one of the best single page explanations I have seen. Thank You.

Also knowing that all traffic sources can be turned on and that Skyview prioritizes them is fantastic (pg 7-23).

The ADSB FULL indication states that the ground station has received the 261's ADS-B out ES message followed by the ADS-B in receiving the appropriate 15 nm "doughnut" of traffic for my aircraft. Did I read this correctly such that seeing the ADSB FULL indication means asking ATC if they are seeing my ADS-B out messages is not needed?

Thanks again for a WONDERFUL product that, as another member mentioned, was delivered on time.

 

[dedgemon]

Flew the ADSB last night. Works GREAT!
This thing will probably scare me to death at the next pancake breakfast . I'll know just how much traffic I can't see!

 

[johnsteichen]

What does ADS-B PARTIAL mean?

 

[dynonsupport]

Page 7-23 of the Pilot's Guide:

ADS-B, Flarm, and Zaon only: Sources that are passive traffic detectors such as the Zaon XRX and Flarm devices are not able to directly interrogate aircraft or utilize the ADS-B system to qualify the “completeness” of the traffic picture around your aircraft. PARTIAL is annunciated to indicate that the traffic picture may not include the entirety of the actual traffic environment around your aircraft. You will also see PARTIAL when an ADS-B system is reporting that it does not know about radar traffic targets, or when you are not receiving ADS-B ground station replies (in this case, you may still see aircraft that are equipped with 978 MHz ADS-B out devices via the SV-ADSB-470). This means that, although you are receiving ADS-B traffic from other ADS-B equipped aircraft, you are not receiving non-ADS-B targets because you are not currently in a radar service volume and/or ADS-B service volume. Therefore, the traffic portrait may be incomplete.

 

[lolachampcar]

Does a proper verification of ADS-B out require a conversation with ATC? (ie. "can you see my ADS-B out messages?")

 

[dynonsupport]

No, a proper verification of ADS-B is done during your transponder check. After that, ADS-B is just your transponder. I'm not even 100% sure if most radar scopes can see or tell if you are ADS-B equipped. I think you would do nothing but confuse most controllers asking for that.

Plus, unless you are using SkyView's transponder connected to a FreeFlight GPS or a Garmin 430W/530W with the absolute latest firmware, you are NOT ADS-B equipped. A non-certified output will never show up on a controller's screen.

 

[lolachampcar]

My local avionics shop did my trandsponder check on installation many months back. The ADS-B firmware change is new so OUT is new as well. I'm not sure my local shop has any ability to see ES messaging. I'll ask.

 

[dynonsupport]

The transponder has been ADS-B out since we first sold it. The change is only to update the TSO from DO-260A to DO-260B. So ADS-B out is not new with the firmware update.