AirNav Systems Forum

AirNav Radar => AirNav Radar Discussion => Topic started by: Longhorn on August 23, 2008, 12:46:30 PM

Title: Double Contrails
Post by: Longhorn on August 23, 2008, 12:46:30 PM
Have seen this twice in last several days, double or more contrails.  Once with V1.6 and now V2.0.  Is this something new? or me.
Title: Re: Double Contrails
Post by: AirNav Support on August 23, 2008, 12:48:52 PM
Not sure what you are refering to in the pic, all seems fine to me.
Title: Re: Double Contrails
Post by: Longhorn on August 23, 2008, 12:51:20 PM
Sorry..look above home and you will see two purple lines...
Title: Re: Double Contrails
Post by: AirNav Support on August 23, 2008, 12:55:45 PM
Ok right, this is not something new its to do with aircraft which have a faulty GPS link to there transponder, this means there position suddenly jumps from one place to another (300miles +).

RadarBox plots it and you might see lines like that untill the aircraft goes out of reception.

Rumour around and I think there are some posts in this forum that some Learjet's do this delibarately to spoof there position so they can't be tracked well.
Title: Re: Double Contrails
Post by: Longhorn on August 23, 2008, 01:05:36 PM
Thanks....for the info.  I back out of  Program and came back in, no more.
Title: Re: Double Contrails
Post by: Longhorn on August 23, 2008, 05:02:04 PM
Air Force GL5...Like you said "they do not like to tracked"
Title: Re: Double Contrails
Post by: tarbat on August 23, 2008, 05:21:32 PM
See the Purple Rain thread - http://www.airnavsystems.com/forum/index.php?topic=671.msg5085
Title: Re: Double Contrails
Post by: Bethsalem on August 24, 2008, 11:54:22 AM
Faulty GPS or deliberate concealing of the aircraft's position?