That's odd. I saw a different coverage map yesterday that shows pretty
good coverage over the Midwest at 3,000 AGL as well. It would not be
reasonable to think that there were several towers along your route that
were all out of service. I'm fortunate that I can look at the mountain
top out of my living room window and literally see the ADS-B tower
there. From Moriarty airport, I can see the top of the mountain, as well.
The flight box looks to be an implementation of the Stratux system that
you can build for a lot less money from parts bought on Amazon. The
difference being the well-thought out box and configuration. I think
the difference in price is worth it.
On 2/15/2017 8:58 AM, Sarah wrote:
It's not guaranteed you will be 'seen' by a ground station at low altitude, especially out in the boonies or in the mountains. This site supposedly shows coverage by altitude interactively:
https://www.faa.gov/nextgen/programs/adsb/ICM/
Take it with a grain of salt - I saw "0 towers" in central WI last year on the way to Oshkosh at 3000' AGL.
I'm curious what people flying with ADS-B in NV or UT see for ground station coverage.
On Tuesday, February 14, 2017 at 9:30:57 PM UTC-6, Paul Villinski wrote:
Wondering if ADS-B equipped aircraft have any advantage should they need search and rescue, given that they broadcast their ID and coordinates. Is positional information logged by the ground stations, and retained for any period of time, or is it "real-time" only? If retained, it seems that ADS-B could supply search and rescue with a last known fix and trajectory if needed.
Of course, used in a glider, this might create some consternation if an ADS-B breadcrumb trail shows a glider making an off-airport landing....
Debating whether to add the new Trig TN72 GPS unit and TA70 antenna to the Trig TT22 transponder in my Experimental glider, for a legal TSO-C199 "TABS" ADS-B system. Can't quite get a handle on the value of ADS-B out vis-a-vis traffic avoidance, versus simply using the Mode S transponder as is. However, if ADS-B out could provide useful tracking in the event of an emergency, that added value would be significant.
--
Dan, 5J