I have my XRX connected to a Garmin 495. I often get warning of 1 to 3 targets very close, behind, and below or at the same altitude as my aircraft. It will happen generaly cruising. The targets move around a bit, then go away for a while. The first few times this happened it was really startling until I realized they were false detections.

Is there a problem with my unit, or am I doing something wrong in the setup?

Any suggestions appreciated...Ken

I fly a PA28R-200, XRX attached to Garmin GPSMap 496. I have this issue too. Scary alerts during approach to airport, +/-100 ft, right above/below me. Now I assume they are spurious, making me wonder how much to trust my XRX.

No reply to the previous poster for almost two years. Any ideas?

The short answer is the "spurious" target is actually your transponder being picked up as traffic. The most common solution to that issue is to calibrate the XRX's altimeter to within 100ft. of pressure altitude. (Altitude indicated when adjusted to 29.92)

If there is more than 100ft. difference between the XRX's altimeter and your transponder then the XRX will assume the traffic to be another aircraft and not yours.

The altimeter adjustment steps are in the owners' manual, pg.43.
If you need assistance just call our tech support line and we can walk your through the process.(800-496-9430)

Thanks. I checked yesterday. The pressure altitude on the field was 780'. Zaon XRX was showing 007 and 008, the best it could be. On my flight, I had one legitimate alert and one false one shortly after (showing 200' below me).

Steve

Can you give more details on the conditions you were flying in and location of the targets in relation to your plane?

How exactly did you verify that one target was legitimate and the other was not?

I could see the one airplane in approximately the location and altitude indicated by the XRX.

The other one showing two hundred feet below me was not there.
1) I could not see it.
2) I was in controlled airspace and received no indication from tower that anyone else (besides the legitimate target) was in my area.

This is the pattern (self-targeting) that recurs. A target within 100-200 feet above or below me. Very disconcerting when it happens.