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02-21-2019, 01:21 PM
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Join Date: Dec 2010
Location: Floyds Knobs, IN
Posts: 633
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Visiting one of these 35 fields with a UAT and chatting with Gnd ctrl might be enlightening:
https://www.faa.gov/air_traffic/technology/asde-x/
When I've heard folks ask enroute about ADS-B it almost sounds like they have to seek out another screen or layer for ADSB.
__________________
RV-6, bought from builder.
O-320, slider, carb, mags, FP
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02-21-2019, 04:44 PM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,104
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Quote:
Originally Posted by moosepileit
35 fields with a UAT
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Now THAT's enlightening. Thanks.
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(2020 dues paid)
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02-22-2019, 06:41 PM
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Join Date: Dec 2005
Location: Bellevue, WA
Posts: 165
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alternative sources for in-flight traffic
Is ADSB - IN the only source for inflight traffic in General Aviation barring expensive radar systems ??
I've been following this thread; and now know a tiny bit about this ADSB thing and way more than I wanted. But I see a quandry; There are alternative ways to get in-cockpit WX and go with an ADSB-OUT with optional anonymous mode. But there seems to be no way to get in-cockpit WX and traffic with an ADSB anonymous mode. Is this correct ??
__________________
Larry E. James
Bellevue, WA
Husky A1-C
Rocket (under construction)
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02-22-2019, 07:44 PM
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Join Date: May 2009
Location: Greenfield, IN
Posts: 123
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Not correct. Weather is always available. For traffic, ADSB OUT in anonymous mode will still “wake up” the tower. In addition as we get closer to the 2020 deadline many other aircraft with ADSB OUT will be waking up the towers. Other aircraft with ADSB IN will see you as a target without an N number. I only have “IN” (stratux) and it’s pretty rare that I lose traffic because enough other people already have “OUT” and are keeping the towers on.
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Gunther
2002 RV-9A 150hp
Last edited by GWZ : 02-22-2019 at 07:45 PM.
Reason: Typo
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02-22-2019, 07:50 PM
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Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
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ADSB weather (and some traffic) is available with *no* ADSB out. You can do it with a $20 SDR receiver, Avare, and an android phone.
When you add ADSB out, it'll trigger the ground station to send available traffic in 'the system' that's near your location. But not needed to get weather.
Charlie
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02-22-2019, 09:45 PM
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Join Date: Sep 2013
Location: Rancho San Lorenzo
Posts: 885
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Quote:
Originally Posted by larryj
Is ADSB - IN the only source for inflight traffic in General Aviation barring expensive radar systems ??
I've been following this thread; and now know a tiny bit about this ADSB thing and way more than I wanted. But I see a quandry; There are alternative ways to get in-cockpit WX and go with an ADSB-OUT with optional anonymous mode. But there seems to be no way to get in-cockpit WX and traffic with an ADSB anonymous mode. Is this correct ??
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Larry. That is actually an excellent question. And one the subsequent two posts already answered correctly that you don't have any worries always having access to in data. But thank you for bringing up a point nobody has discussed in detail. Kind of got glossed over. So while your concerns have been addressed with a positive response, you are bringing us back on point so as to not forget the devil in the details. 
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RV-8
(a few more airplanes too)
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02-23-2019, 09:34 AM
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Join Date: Jan 2008
Location: Shell Knob, MO
Posts: 119
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I'm going for it!
I've decided to go ahead and wire in a switch on my GDL-82 UAT for Anonymous mode. I don't think that I will ever use it given today's ADS-B regulatory implementation. If, however, the FARs ever change regarding what information is displayed in 'Anonymous Mode' and to whom, it might come in handy.
On a somewhat related note regarding privacy, has anyone thought about the data from your car's Event Data Recorder (EDR) in the event of an accident. Who owns it, who has access to it, is a subpoena needed to download it,...? Don't want to go into too much drift on my own thread, but that's certainly a topic of another thread, and on a different forum. 
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Bud K
N682TT RV-7
Legal Eagle - Flying
FFR Roadster (sold)
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02-24-2019, 07:51 AM
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Join Date: Nov 2013
Location: Austin
Posts: 28
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Anonymous mode wouldn't have been as safe
Entering the pattern recently at a popular uncontrolled airport (diner on the field), my MFD showed a plane a hundred yards behind me, closing. Because he was maneuvering, it wasn't clear what evasive action I could take.
But because I saw his N-number on my display, I was able to immediately announce, "XYZ, do you see the plane directly in front of you?!"
Announcing a hastily created, vague description of my location wouldn't have had the same galvanizing effect and might have been ignored. I'm a privacy nut too, but here's a case in which calling a pilot by tail number may have prevented an accident.
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02-24-2019, 10:46 AM
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Join Date: Dec 2005
Location: Bellevue, WA
Posts: 165
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Bo1000, you raise a good point. There seem to be reasonable arguments on both sides of the "privacy debate". So I'm seeing it as a gray-scale and I still find myself more towards the anonymous side.
My panel is at Stein's and I've been talking with them and Garmin to try and sort this out. The constraints I've put in place (and can be changed) are:
1) all Garmin if possible (full and easier integration)
2) ADSB anonymous mode OUT
3) G3X display with traffic and WX
4) G3X preferably with both ADSB and SiriusXM WX
Here is what I've got on deck to meet these criteria:
GTX327
GDL82 - gives compliant ADSB-OUT with anonymous mode
GDL52R - feeds ADSB-IN and SiriusXM to G3X
G3X
and the rest of the panel:
(2ea) G5
GMC507
GTR200
EI- MVP50 (I chose to not go Garmin here: I like a dedicated UI for engine)
__________________
Larry E. James
Bellevue, WA
Husky A1-C
Rocket (under construction)
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02-24-2019, 11:24 AM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,297
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Quote:
Originally Posted by larryj
Is ADSB - IN the only source for inflight traffic in General Aviation barring expensive radar systems ??
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No. Mode S transponders receive traffic information while within the boundries of participating approach control areas.
Larry
__________________
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
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