Ghost image on my GTN750xi and false traffic alert

[Oscar Avalle]

I have a Ryan 9000 traffic alert unit installed in my M20C, linked to my GTN750xi. I get ¨ghost alert of myself on my traffic display as a yellow traffic alert with the corresponding ¨traffic, traffic¨warning. Is there a way to eliminate that false traffic alert_

 

Thank you for any advice on this very annoying issue.

 

Oscar 

[201Steve]

I used to get this on my iPad a lot. Once on a missed approach go around in imc. Not a fun time to be wondering if it’s an erroneous Adsb ghost reading or not. 
 

it eventually stopped happening and I didn’t do anything to fix it. Never quite understood it. 

[Ragsf15e]

On 10/23/2024 at 4:44 AM, 201Steve said:

I used to get this on my iPad a lot. Once on a missed approach go around in imc. Not a fun time to be wondering if it’s an erroneous Adsb ghost reading or not. 
 

it eventually stopped happening and I didn’t do anything to fix it. Never quite understood it. 

Yeah, that’s not a good time to get a spurious warning like that!

Slight aside for a story here, but eventually it links…

Back around summer 2007 I was at Green Flag in Las Vegas spinning up to deploy to Afghanistan.  GF is different than Red Flag as it (at least use to be) strictly air to ground and close air support exercises.  Well one night I got to lead a 2 ship close air support mission with live strafe.  Awesome.  Id of course practiced this before, but never with live bullets, just “nerf” computer simulated.  The mighty F-15E is kind of a bear to strafe well, especially at night.  Especially if there’s terrain around (we were on a mountainous range and training for Afghanistan).  The gun is designed for air to air on the original ait to air only F-15C.  It’s canted up 2.5 degrees to help lead a turning aerial target.  So in strafe, you have to aim short of the target so you are pretty steep.  Also, it’s only 20mm and range is around 8000’ slant range. And you need to be at 450kts so you can pull 5Gs to maneuver away from the ground after you shoot.  It’s nothing like an A10 shooting from 2 miles away and 250kts.  There’s a very short, 5 second window to have the pipper on target, be in range, shoot, and then pull 5 Gs (hopefully after letting off the trigger) to avoid hitting the ground.  From a 30degree dive, we planned to bottom at 500’.  Lower if we used 15 or 20 degree attacks.  In the daytime it’s pretty fun.  Nighttime, on NVGs, with the very narrow field of view, it can be terrifying.  Again, id never done it live at night and certainly never in mountains (i was stationed in North Carolina).  So the first hot pass was, well, exciting.  We (there’s a WSO in the back seat of an F15E) rolled in from ~7000’agl, 30degree dive into pitch darkness.  I couldn’t see the target, but my WSO  had it in the taget pod and was lasing it with an IR beam that I could see in the nvgs.  At 8000’ slant range and 30degree dive, I opened fire.  Then all hell broke loose.  The sound and smell of the gun was expected (it’s just behind your right shoulder and blasting 6000 rounds per minute).  What wasn’t expected was the super disorienting bright flashes of the gun in the nvgs and the weirdly oriented new “horizon” line created by the tracers.  I was quickly wondering if i was in a bank, but no time to think, off trigger and pull!  That’s when my wso did exactly what he should do, but I told him never to do it again!  He dropped a stream of flares to practice defense against a shoulder fired sam.  As I pulled up, slightly disoriented, my own shadow (flares below illuminated me) was very close above me and just slowly moving forward!  I thought 100% it was my wingman who was supposed to be 2 miles behind me!  I slightly let off the pull and just tried to get away from the wingman until it disappeared.  Me, “Holy $&@/! Did you see #2?!” WSO, “no, but that flare was really bright!” Me, “2, posit!” #2, “On final, hot!” Me, “Beelo (WSOs callsign), never drop another flare at night in your life!” 
Thank goodness I got to strafe in the daytime in Afghanistan and not at night!

Edited October 26 by Ragsf15e

[Pinecone]

2 hours ago, Ragsf15e said:

It’s nothing like an A10 shooting from 2 miles away and 250kts.

Hey, we were slow, but not THAT slow.

Normal deliveries were at 325 KIAS.

And when I flew the Hog, we are primarily anti armor (80s) so we used 6000 and 2000 feet slant range for long range and short range strafe.  And we did two target, where we would fire at one target at 6000 feet then side step and engage a second target before 2000 foot foul line.

[201Steve]

On 10/26/2024 at 2:24 PM, Ragsf15e said:

Yeah, that’s not a good time to get a spurious warning like that!

Slight aside for a story here, but eventually it links…

Back around summer 2007 I was at Green Flag in Las Vegas spinning up to deploy to Afghanistan.  GF is different than Red Flag as it (at least use to be) strictly air to ground and close air support exercises.  Well one night I got to lead a 2 ship close air support mission with live strafe.

That sounds far more terrifying and way cooler than my lil story.  Hahaha