Here is a puzzle for you all TE0xxx as HEX

[OH-Bomm]

Seen them a lot around Portland not only by me

nocallsign_TE0B28
Hex: TE0B28
Altitude: 1675 ft (511 m)
Speed: 114 kt (211 km/h, 131 mph)
Track: 1°
Pos: 45.56403 / -122.59644
Radar: KPDX

nocallsign_TE069D

*

Hex: TE069D
Altitude: 200 ft (61 m)
Speed: 136 kt (252 km/h, 157 mph)
Track: 298°
Pos: 45.57651 / -122.54773
Radar: KPDX

´ nocallsign_TE0EA6
Hex: TE0EA6
Altitude: 3200 ft (975 m)
Speed: 112 kt (207 km/h, 129 mph)
Track: 118°
Pos: 45.53242 / -122.77282
Radar: KPDX

nocallsign_TE09DD
Hex: TE09DD
Altitude: 3025 ft (922 m)
Speed: 131 kt (243 km/h, 151 mph)
Track: 42°
Pos: 45.39189 / -122.44766
Radar: KPDX

Screenshots follows

If anyone has anything about theese don't hesitate to inform me i am confused

[Anmer]

Possibly TIS-B messages?

[speedbird1960]

I spotted even stranger goings on, in the same area on the 3/2/2011.

There where 9 Russian Hex Codes showing, all at low altitude and low speed.
ICAO24-address 1AE0F3 is from Russian Federation [ RU ]

Because its the same Radar KPDX maybe its a glitch or 9 Russian UFO's





Mike / Speedbird

[scanhorse]

Hex TE codes in Portland , KPDX airport

Hi

there are 7 ac around Portland field with hex starting TE. What are they

any ideas ??

LN-MOW also saw them
and thinks it could be military or flightschool something

Could planes carry not guilty Hex codes ??

Ulf Scanhorse

[speedbird1960]

Hi

there are 7 ac around Portland field with hex starting TE. What are they

any ideas ??

LN-MOW also saw them
and thinks it could be military or flightschool something

Could planes carry not guilty Hex codes ??

Ulf Scanhorse

Hi Ulf.

I have seen these a few times.

Here's another thread about them.

http://forum.flightradar24.com/threads/1521-Highlights-of-Flightradar24?p=8633&viewfull=1#post8633

Mike / Speedbird

[scanhorse]

http://forum.flyprat.no/showthread.php?p=658106#post658106

[scanhorse]

Here is a possible explain from Superhai in flyprat.no

Originally Post
så det ka vel ikke vaere forklaring på TE hex

Superhai

Nå vil vel det sendes TIS-B meldinger for å dekke alle fly i området til radaren som ikke støtter ADS-B.
Så det er jo en mulighet.
Den kan også sende "anonyme" ICAO24 koder,
så selv om transponderen sender en hex code så sender TIS-B radaren kanskje ut en annen.
Men dette er mer spekulering fra min side.

Translated:

Superhai
Now you will probably be sent TIS-B messages to cover all aircraft within range of the radar that does not support ADS-B.
So it's a possibility.
It can also send "anonymous" ICAO24 codes
so even if the transponder sends a hex code that sends the TIS-B radar may find another.
But this is more speculation on my part.

[Charky]

Hi,
Ive also seen this several times.
some ideas about it:
1. seems to happen at KPDX only
2. if a hex with "TE0" is visible, there are more than one at the same time until most of them vanish at the same time
3. hex T is not a valid hex value. it cannot be created (programmed) as hex code in the transponder (the transponder is bit oriented).
4. I have seen it at FR24 only. So it might be connected to the upload or the uploader

possible explaination:
1. a new software is tested, converting the received data to wrong ascii characters or bug in an excisting supported software (it happens only to hex "TE0")
2. wrong CRC correction.
3. wrong field splitting
4. misinterpreted message types.

Would be nice to solve this puzzle.
Karl

[Charky]

to make it a bit more clear (had a look into the documentation again):
the ModeS/ADS-B/TIS-B is setup as follows:
1) Preamble: used for syncronizing
2) 8-bit controll field:
contains the 5-bit DF-message type (for example DF11 acq squitter, 17 ADS-B, 18 TIS-B,19 military)
plus the 3-bit subtype (CA)
3) 24-bit field contains the aircraft address (ICAO24/Hex)
4) this is then followed by 24-bit parity check (CRC)

in the extended squitter there is an additional field between the aircraft address and the parity check. Its 56-bits long and contains the ADS message content.

the maximum what can be coded in the 24-bit aircraft address field is 111111111111111111111111 equals hex FFFFFF.

would be nice if the uploader KPDX could provide us with a raw data dump of the messages received.
Also to find planes with the hexcode TE0xxx replaced by AE0xxx.

[Charky]

sorry, again. (forgive me, Im getting older, so it takes some time to remember)
there are some messages where the first 8 bits are not followed by the hex/ICAO24/aircraft address:
DF18, CA/CF/AF = 4
DF18, CA/CF/AF = 6
DF18, CA/CF/AF = 7
DF19, CA/CF/AF = 1 to 7
If these messages are received and not filtered out this might result in an wrong aircraft address, but never mind, a hex "T" is still not possible -> software problem. So its not an ICAO24, it might be pure text.

[speedbird1960]

Hi,
Ive also seen this several times.
some ideas about it:
1. seems to happen at KPDX only
4. I have seen it at FR24 only. So it might be connected to the upload or the uploader

Would be nice to solve this puzzle.
Karl

Hi Karl.

I have seen these on Planefinder a few times, unless FlightRadar24 has got the same feeder as Planefinder it must be something else.



N412RV is in the middle again, it could be some kind of test linked to this aircraft.

I have found some information about N412RV, it has been built from a kit in 2008.
Looking at these photos it does not look like the sort of aircraft for doing tests.

http://picasaweb.google.com/johnwendellpeck/Oshkosh2009RV12?authkey=Gv1sRgCJ7tuK3vl5g6&feat=email#

Mike / Speedbird

[Charky]

Hello,
Im still staying to my last post thats some kind of misinterpreting is happening.
Would be nice to see a raw data dump. Then it would be clear what kind of messages are creating these hex.
without this you can only guess.

[Charky]

The TExxxx is described in the basestation documentation around page 40. Its a non-standard ICAO adress which contains instead of the 24 bits 2times 12bits. To show this difference the first letter "A" is converted to "T".

[airladysmith]

Hi All ,

This is about the strange Hex Codes you have been seeing over Portland & Seattle .

The new SBS-1er has the capabilities to read RAW DATA in the messages it receives from the Aircraft . ADS-B and ADS-S and yet another FIS-B .
It's the FIS-B that you are starting to see . As far as I know it is on test by a few SBS-1er guys . Kinetic have a few locations were the logs are located and they find their way on PlanePlotter or FR24 .
The information is from Aircraft wanting to know weather and airport conditions . It seems the Aircraft had been given a special code to receive or send etc .

So far I think the new system is only in the USA [FIS-B] . We have been told that only certain info comes from the aircraft . RB and SBS-1 and Aurora show certain info which we see on the screens . But there is more info which can be seen but has not be released in the firmware yet !! . In the future we are going to see more information in the new Firmware releases . Doubt if the older SBS boxes will be able to show the new info though .

How these new Hex Codes will be set in the Gatwick ActiveDisplay or other programs to decode the hex codes remains to be seen .

Hope that helps
Tony
CYCD2
Ladysmith,Vancouver Island