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ADSB 472 (Read 1432 times)
Jun 28th, 2017 at 10:03am

jethound   Offline
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I have installed the new ADS-B 472 and have several questions.
One the targets seem to disappear.  So what are the parameters for the ADS-B to display traffic.  On downwind.  with another RV on the runway showing up on the foreflight with his ADS-B.  I do not see Him? 

15 miles from the airport same guy is shooting a GPS approach to Runway 16 at KJZP   We are 2400 feet higher and he never shows on the Dynon  but is constantly there on the Stratus.

Other times we have aircraft pop up then disappear.  all the time we have ADS-B OK   
How can it be oK when I don't see the aircraft anymore.  Then they show up again ?
Why can we not have our own options in setup to select see everything or limit it.  I would personally love to see everything just like my IPAD does with foreflight and a Stratus 2.  I am use to seeing it all since we use the same set up on our corporate jets.  I am sure guys doing oxygen and 270 knots would like to see everything and not have Dynon preselect it

Thanks
Jack Hunt

 
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Reply #1 - Jun 28th, 2017 at 2:14pm

rvator51   Offline
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Skyview doesnt show the targets that are 15 or more miles away and  over 5000 ft above or below your aircraft to limit the clutter on the screen.  I actually like it and it matches my foreflight since I turn off the "show distant traffic" option on foreflight.  Here in the Phoenix area, there is just too much distant traffic showing and it really can clutter up my 7" display.  That said, it would be nice to have an option to turn on or off distant traffic.
 
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Reply #2 - Jun 28th, 2017 at 6:16pm

jethound   Offline
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Yes I have a great understanding of the ADS-B and its limits.  We continued closer to the airport and never picked up the traffic even though he has ADS-B and the Stratus showed him up with His N number.  We know this fellow also.  Never showed up on the Dynon even when in the pattern only 1000 feet above him and he was on the ground.  The Stratus and Foreflight still show ground targets in Brown. 

The options to turn on the limits or shut them off would be great.  You could also have a filter at 25-50 miles or unlimited  or an altitude limit 5 thousand above and below or unlimited. 

I have a great time with my wife watching the airliners go over on the foreflight but never see them on the Dynon except when transversing the Atlanta Class B.

Still the problem is not painting targets solidly and having them come and go even within a 10 mile distance and within 1000 feet of the altitude.  All the times the Dynon states ADS B Ok and if you check the ADSB page it is receiving information.  I figure if Stratus can paint them inside the aircraft with a stuck on ADSB antenna.  My ADSB 472 should paint them with a blade antenna.  I have the entire FAA report and my system passes their criteria with no faults. 

I wish I could remember how to take screen shots. 
I am not complaining.  I am ever so grateful for the dynon equipment and what it is capable of doing.  I just want it to work as I believe it is capable of.

Jack
 
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Reply #3 - Jun 28th, 2017 at 6:28pm

TomK   Online
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RV-12

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jethound wrote on Jun 28th, 2017 at 6:16pm:
I wish I could remember how to take screen shots.

Push & hold buttons 2 and 7 with a flash drive in USB port ...
 
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Reply #4 - Jun 29th, 2017 at 5:11am

jethound   Offline
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Thanks you.
 
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Reply #5 - Jun 29th, 2017 at 12:23pm

RayInGA   Offline
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This would make a nice sticky (hint).

From my cheat sheet:

Installation Guide REV AA

Button 1: Hold to shut down or hold to turn on Skyview - page 3-7
Buttons 1,2,5: Press all together to reboot Skyview - page 3-8
Buttons 2,7: Press together for Screenshot - page 21-2
Buttons 7,8: Hold to enter setup menu. - page 3-9
 

Ray Eaker
RV-7A flying since 27 Jan 2017
Dual Skyview 1000T with all the standard Dynon VFR goodies and ADS-B out.
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Reply #6 - Jun 29th, 2017 at 12:25pm

HomeBuilt101   Offline
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Ray,

This is very helpful...THANKS!!!
 
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Reply #7 - Jun 29th, 2017 at 4:18pm

GalinHdz   Offline
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RayInGA wrote on Jun 29th, 2017 at 12:23pm:
This would make a nice sticky (hint).

From my cheat sheet:

Installation Guide REV AA

Button 1: Hold to shut down or hold to turn on Skyview - page 3-7
Buttons 1,2,5: Press all together to reboot Skyview - page 3-8
Buttons 2,7: Press together for Screenshot - page 21-2
Buttons 7,8: Hold to enter setup menu. - page 3-9

Knowing that if the display needs rebooting in flight it will happen at the worst possible moment and I won't remember the sequence, I went one step further. Using a label maker with white on clear tape I printed REBOOT 1-2-5 and placed it just below the display buttons. Always instantly available. You can see the label(s) in this photo:

...

Cool
« Last Edit: Jun 29th, 2017 at 7:03pm by GalinHdz »  

N819PR
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Reply #8 - Jun 30th, 2017 at 8:32pm

dwightsmall   Offline
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I have the same issues as jethound. Traffic disappears a lot. I've installed the 472 dual band and those issues remain. A couple of days ago I switched to a 978 antenna and changed the coax just in case. Today I flew a second round trip  test flight between Tucson and Phoenix. I  had 99.9  ADSB OK but did have two brief events where it reverted to "TIS OK" and when that happened/happens the ADSB targets disappear. I've worked very hard to trouble shoot this and I'm beginning to think that this lapse may occur when my receiver switches from one ADSB tower to another.  This lapse always occurs in nearly the same place which is about midway between Phoenix and Tucson.  It has happened other places too but not with any pattern or regularity.  The jury is still out but I've made two flights with the new 978 rod antenna and it seems to be better. Today I had ADSB OK all the way to touchdown.  I have also flown tests with another 1090ES dual band airplane. He has a Grand Rapids installation. We were within 7-10 miles of each other and could not "see" each other. That was disappointing because we should be able to see each other via 1090 direct, airplane-to-airplane. I also went to setup in flight (buttons 7&8) and checked the setup>ports>port 1 which is the port that the 472 uses. I noticed that I was accumulating about 1 "sentence error" every couple of seconds. The ration of sentence errors to "good sentences" is low and one of the Dynon employees has said that that shouldn't be a problem.  Like jethound I want the system to work as close to perfectly as possible.
 
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Reply #9 - Jul 3rd, 2017 at 8:17am

Dynon Avionics   Offline
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So seeing occasional TIS OK, even in good ADS-B coverage areas, isn't super unexpected, as it's is the second highest priority traffic mode after ADS-B OK. To have ADS-B OK, you need to have ADS-B ground station coverage, and the ADS-B system needs to also think that there is radar coverage. This is usually the case, but if you lose the ground station, or if the system isn't reporting radar coverage, you'll drop down to the next most trustworthy source. If you're in a TIS-A coverage area, TIS-A is a portrait of traffic directed to your aicraft that are the most relevant targets as the TIS-A/radar system determines, and this is judged to be more trustworthy than partial ADS-B that may be missing aircraft.

dwightsmall - is your installation a completely new one or a -470 to -472 upgrade?

All of that said, we're seeing enough reports about traffic issues with the SV-ADSB-472 that we're doing a deeper dive to see if there's anything systemically going on here.
« Last Edit: Jul 3rd, 2017 at 8:17am by Dynon Avionics »  

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Reply #10 - Jul 3rd, 2017 at 12:18pm

N214ST   Offline
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Hey GalinHdz, I think you need another display in your cockpit! Grin Wink
« Last Edit: Jul 3rd, 2017 at 12:19pm by N214ST »  
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Reply #11 - Jul 3rd, 2017 at 5:58pm

kurt Rutkowski   Offline
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Dynon,

I also recently upgraded my ADS from the 470 to the 472 and notice traffic blinking on/off the display.  I never noticed this with the ADS470 so I feel it is related to the above posts.  I am planning on flying to Oshkosh later this month and will get a lot of flight time to experience this.  If you need any specific screen shots or data dumps let me know and I will attempt to supplement your data.

SV1000T, SV 261 Transponder, ADS472, GNS430W.
 
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Reply #12 - Jul 5th, 2017 at 8:25pm

George K   Offline
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My traffic ADSB reception definitely got worse with the switch from 470 to 472. Stratus traffic keeps working well as in the past, receiving 2+ towers Without additional antenna. Skyview repeatedly switches to TISB or NO RADAR (20 miles from major Class B with tons of radar), fails to paint traffic in range, often intermittently, even at high altitude with 6 towers receiving on Stratus. have diag file. Now I'm militant about Stratus iPad and chargers.

Can I have my 470 back and my downgrade money? Or FIRM ASAP timeline for fix even with your backlog such as user documentation version 15 manuals?
« Last Edit: Jul 5th, 2017 at 8:45pm by George K »  

Glide
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Reply #13 - Jul 8th, 2017 at 5:47am

dwightsmall   Offline
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I upgraded 470 to 472 and installed 978 antenna. I am on a trip now having flown from Tucson to South Dakota. ADSB OK coverage seems better than last year but does drop to TIS, usually for only a few seconds, when I don't think it should such as in or near Class C airspace, i.e., Omaha. A few times it went, for short periods, to ADSB NO RADAR when I'm pretty sure i was in radar coverage and altitude areas. I suspect that some interruptions may have occurred when my Dynon was leaving one ADSB tower's jurisdiction and entering another's. Overall the ADSB OK status was good so I'll estimate it at 95% in areas and at altitudes where coverage could reasonably be expected.  I haven't yet determined if I've observed any 1090 traffic (airplane to airplane direct). If I understand the system correctly, I think I would need to be in a non radar area/below radar to make this determination.
 
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Reply #14 - Jul 13th, 2017 at 1:28pm

jethound   Offline
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Thanks for working on this.  I understand that you can still get into areas at a low enough altitude that the ADS-B does not pick up.  But like I stated, it is when I am at 9000 feet ATL MCN CHS  a good route where there are a bizillion ADS-B transmitters and were still getting dropped planes on the display.  The whole kicker is that Foreflight stratus is dead solid all the time on traffic in the vicinity of my plane.

I though it was the coax.  I ran a new run of coax but still works the same. 
The transponder hits on flightplan.com are consistent and show that My plane is getting hit by ADS-B center tracking all the time. It shows the centers and the time intervals.

Thanks for working on the problem.
Jack
 
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Reply #15 - Jul 13th, 2017 at 1:31pm

jethound   Offline
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We will be headed to Oshkosh on Friday the 21st.  hope some of you guys make it over to homebuilt camping.

Jack
Hospitality greeter.
N507H
 
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Reply #16 - Jul 14th, 2017 at 4:19pm

Dynon Avionics   Offline
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For those of you experiencing issues with the SV-ADSB-472 - what antenna are you using?
 

Please do not use Private Messaging on form to contact. For private support:
Email: support at dynonavionics dot com
Phone: 425-402-0433 (7am-5pm Pacific weekdays)
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Reply #17 - Jul 14th, 2017 at 8:07pm

Alexe   Online
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Dynon - I'm using the stock antenna that came with the ADSB470 as supplied by Van's for the RV-12.
Alex
 
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Reply #18 - Jul 14th, 2017 at 8:33pm

Steve W.   Offline
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Dynon Avionics wrote on Jul 14th, 2017 at 4:19pm:
For those of you experiencing issues with the SV-ADSB-472 - what antenna are you using?


TED transponder antenna.  Have seen momentary drop-outs, but haven't been  paying enough attention to characterize them (other than they're happening in airspace that is WELL covered by radar and ADS ground stations....greater L.A. area).
 
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Reply #19 - Jul 15th, 2017 at 4:42am

George K   Offline
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The same antenna that worked just fine with the 470 - looks the same as transponder's
 

Glide
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Reply #20 - Jul 15th, 2017 at 11:50am

kurt Rutkowski   Offline
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I am using the TED antenna for my ADS 472.   I notice lower performance with the ADS 472 vs. ADS 470.   I see traffic blank in and out often.  Also, see screenshot of the full USA weather with a lot of holes in coverage.  Looks like the receiver is loosing lock and dropping data.  This was an 1 hour flight in the Ft. Worth, Texas area all at 4500 feet.  Should have great ADS B coverage.
 
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Reply #21 - Jul 16th, 2017 at 6:34am

GalinHdz   Offline
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I just did a trip between St. Augustine, FL and Fayetteville NC between 7,000 and 8,000ft and noticed the same issue with my recently installed 472. I had never noticed this with the 470 before, but then again I wasn't really looking until I started reading this thread. Except for the mounting bracket and the 472 unit, I used the same wiring, cables and antenna used by the 470 since 2013.

FWIW I am using the Advanced Aircraft Electronics High Gain (L2) Transponder Antenna in my fiberglass airplane.

...

http://www.aircraftspruce.com/catalog/avpages/antennasystems1.php?clickkey=4083

Cool
« Last Edit: Jul 16th, 2017 at 12:59pm by GalinHdz »  

N819PR
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Reply #22 - Jul 17th, 2017 at 5:16am

Andy Karmy   Offline
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I'm having the same sort of coverage issues. Antenna is the DeltaPop UAT antenna.

http://www.deltapopaviation.com/UAT_Antenna.html
 
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Reply #23 - Jul 17th, 2017 at 5:36am

mitch757   Offline
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Posts: 27
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After upgrading to the -472 on my RV-12, I also get traffic drop outs even at very close range. The antenna is the one supplied with the RV12.

Also the weather is slower to appear and has some dropout or holes in the depiction.

My Skyview  is running v15.2.

« Last Edit: Jul 17th, 2017 at 5:37am by mitch757 »  
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Reply #24 - Jul 17th, 2017 at 7:46am

GaryK   Offline
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I know Dynon said they are looking into it but if this continues I would really like to get my 470 back until the problem is resolved.

The 470 was much more consist. I fly from GRR in MI to ARB on a regular basis. Never lost ADSB in 2 years flying with the 470. the 472 is very inconsistent, several times in a 40 minute flight the ADSB drops out.

Would really like to get an update from Dynon..

Thanks
Gary
 
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Reply #25 - Jul 17th, 2017 at 9:36am

TurboPilot   Offline
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Roche Harbor, Washington

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When the 472 was first released there was a discussion here about the potential for transponder interference given the 472 now includes 1090 and the 470 does not.

I wonder if the 472 is more sensitive to this problem?
 
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Reply #26 - Jul 17th, 2017 at 10:54am

RayInGA   Offline
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wmince wrote on Jul 17th, 2017 at 8:11am:
Who is the contracting manufactuter that fabricates the 472 for Dynon?


The internals source is marked on the label.

http://www.dynonavionics.com/adsb-dual-band-receiver-472.php
 

Ray Eaker
RV-7A flying since 27 Jan 2017
Dual Skyview 1000T with all the standard Dynon VFR goodies and ADS-B out.
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Reply #27 - Jul 17th, 2017 at 11:12am

wmince   Online
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wmince wrote on Jul 17th, 2017 at 8:11am:
Who is the contracting manufactuter that fabricates the 472 for Dynon?

Answer: uAvionics

Next question: Who was the manufacturer of the outdated 470?
 
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Reply #28 - Jul 19th, 2017 at 10:45am

Ed Meyer   Offline
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I too seem to be having issues with the ADS-B 472. Twice recently I have been in the pattern at my home airport which is outside of ADS-B ground transmission coverage, and airplanes that were following me in the pattern did not show up but, after landing and taxiing on the parallel taxiway, then they did show while on final and on the runway. The first time was a small airplane and I don't know if it was ADS-B out on 978 or 1090. The second time was a bigger high performance airplane which would have been 1090 since it operates at the flight levels. I have the Ted UAT antenna.
 
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Reply #29 - Jul 19th, 2017 at 12:05pm

dwightsmall   Offline
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I recently installed the Dynon 978 antenna.   Perhaps just a wee bit better but jury is stiii out.
 
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Reply #30 - Jul 19th, 2017 at 1:31pm

RayInGA   Offline
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Ed Meyer wrote on Jul 19th, 2017 at 10:45am:
The first time was a small airplane and I don't know if it was ADS-B out on 978 or 1090. 


If they have OUT, their tail number will show under the target.
 

Ray Eaker
RV-7A flying since 27 Jan 2017
Dual Skyview 1000T with all the standard Dynon VFR goodies and ADS-B out.
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Reply #31 - Jul 21st, 2017 at 8:36am

GalinHdz   Offline
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Also, I only see ADS-B weather with the FltPlanGo App (no traffic) if I use <CUSTOM - PORT 4000> as the ADS-B input not the DYNON selection. Weather displays fine but absolutely no traffic even though I am seeing traffic on my SkyView display. When I connect to a STRATUX receiver everything displays correctly.

Huh

« Last Edit: Jul 21st, 2017 at 8:36am by GalinHdz »  

N819PR
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Reply #32 - Jul 21st, 2017 at 4:31pm

Dynon Avionics   Offline
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We think there might be a bug with traffic output. We're looking into it.
 

Please do not use Private Messaging on form to contact. For private support:
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