ForeFlight collision avoidance system

At seniors I got to try out both Flarm and ADSB in+out at the same time in a target rich environment.

It looks like the ADSB system includes an update delay which makes it less useful with manouvering gliders.

Given a choice between Flarm and ADSB, I think the best answer is yes, if you can stand the false alarm rate.

On 4/3/20 10:25 PM, David Shelton wrote:
On Friday, April 3, 2020 at 8:21:45 PM UTC-7, kinsell wrote:
On 4/3/20 11:40 AM, SoaringXCellence wrote:
Martin,

The Foreflight display function is immediate as long as there is a valid input from an ADS-B input source. In our gliders the most common ADS_B input is coming from the FLARM, which does not interface with the Foreflight software, nor the iDevice wireless inputs (Bluetooth and WiFi).

So, unless you have a newer TPX with ADS-B in and wireless communication (Of which there are many now on the market), the Foreflight display TAWS function will not work.

In addition, while the Trig 21, or 22 is a great ADS-B out device, there is not, to my knowledge, any ADS-B in from that device. So again you'll need some other source to the Foreflight to get the TAWS display.


The original question was about transponder equipped targets. If the
target has only a transponder, then the best Foreflight could do is a
PCAS type of display (ring of fire), which has never been terribly
useful. I doubt if a Stratus 3 type of ads-b receiver even transmits
that info to a display.

-Dave

Yes, the newer Stratus has a dual-band receiver and is able to transmit ADS-B targets to your tablet.


You're missing the point. Transponder equipped aircraft are not the
same as ADS-B out equipped aircraft. In most airspace, a transponder
only power plane can fly legally up to 10K MSL without ADS-B, like a
glider with transponder only can fly to 18K.

On 4/3/20 11:33 PM, Mike Schumann wrote:
If you have ADS-B OUT in your aircraft and you are within range of an ADS-B ground station, Foreflight with a Scout receiver will show you all transponder equipped aircraft that are visible to ATC with the same location accuracy available to the ATC radar system. That is dramatically better than the “ring of Fire� you get with a PCAS or FLARM system.


Once again, the original question was about transponder equipped
aircraft, which does not necessarily mean they're ADS-B out equipped.

ATC still uses radar to show transponder-only targets. These can't be
shown with accuracy on a Foreflight type of system with an ads-b receiver.


Flarm does show 978 mhz ADS-B targets with full position accuracy, like
it shows flarm targets.

On Saturday, April 4, 2020 at 7:03:37 AM UTC-7, kinsell wrote:
On 4/3/20 11:33 PM, Mike Schumann wrote:
If you have ADS-B OUT in your aircraft and you are within range of an ADS-B ground station, Foreflight with a Scout receiver will show you all transponder equipped aircraft that are visible to ATC with the same location accuracy available to the ATC radar system. That is dramatically better than the “ring of Fire� you get with a PCAS or FLARM system.


Once again, the original question was about transponder equipped
aircraft, which does not necessarily mean they're ADS-B out equipped.

ATC still uses radar to show transponder-only targets. These can't be
shown with accuracy on a Foreflight type of system with an ads-b receiver..


Flarm does show 978 mhz ADS-B targets with full position accuracy, like
it shows flarm targets.

I understand that Flarm show 1090 mhz ADS-B targets, If you know of a model that does 978 mhz, I'd like to learn of it.

1090 is the world standard for ADS-B 978 is a USA only patchwork to make ADS-B available at a cheaper price point.

On 4/4/20 8:18 AM, Bruce wrote:
On Saturday, April 4, 2020 at 7:03:37 AM UTC-7, kinsell wrote:
On 4/3/20 11:33 PM, Mike Schumann wrote:
If you have ADS-B OUT in your aircraft and you are within range of an ADS-B ground station, Foreflight with a Scout receiver will show you all transponder equipped aircraft that are visible to ATC with the same location accuracy available to the ATC radar system. That is dramatically better than the “ring of Fire� you get with a PCAS or FLARM system.


Once again, the original question was about transponder equipped
aircraft, which does not necessarily mean they're ADS-B out equipped.

ATC still uses radar to show transponder-only targets. These can't be
shown with accuracy on a Foreflight type of system with an ads-b receiver.


Flarm does show 978 mhz ADS-B targets with full position accuracy, like
it shows flarm targets.

I understand that Flarm show 1090 mhz ADS-B targets, If you know of a model that does 978 mhz, I'd like to learn of it.

1090 is the world standard for ADS-B 978 is a USA only patchwork to make ADS-B available at a cheaper price point.


There has been talk of someday getting PF enhanced to take advantage of
ADS-R, but I did mean to say 1090. Not enough coffee.

978 also was intended to reduce congestion on 1090, and it provides
real-time weather, and text products like PIREPS an NOTAMS, so there's
more to it than just cost reduction.