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Best "box" to receive uncertified (SIL=0 or SIL=1) ADS-B IN data (NOT involving a tablet)?

There seems to be a huge number of these things but most need an Ipad or similar to display the traffic.

Is there something which can emit a serial data stream (RS232, ARINC429, etc)?

If it is documented that’s even better but not mandatory

Shoreham EGKA, United Kingdom

Try the stratux europe github, I’m sure it can be done to get the signal somehow.

EASA CB IR Training

Probably wouldn’t be difficult to do something with a Raspberry Pi and an SDR receiver. You can emit pretty much any common serial protocol from a GPIO pin of a Pi. The PilotAware Rosetta is basically a Pi and an SDR in a nice box. It would be just a matter of an SD card with your own custom software.

Last Edited by alioth at 29 Jul 16:08
Andreas IOM

That would be a massive project. Plus, one would need some controlled signal sources to test it with.

Is there nothing already working?

Shoreham EGKA, United Kingdom

Peter wrote:

That would be a massive project.

Not really. You can buy the hardware off the shelf, there’s already open source software that receives ADS-B that runs on the Pi – as I said, you can just use the PilotAware Rosetta if you want pre-built hardware with the radios already available. The bit left over is making it come out in the format you want, and maybe some level shifting on the hardware end.

Andreas IOM

(and the PilotAware uses the GDL90 protocol, so another option is to turn GDL90 into whatever you need).

Andreas IOM

What are the physical interface options for GDL90? I believe WIFI is one of them, but that’s a lot of work also.

Perhaps @sebastian_g will know more.

Shoreham EGKA, United Kingdom

The Air Avionics TRX1500A will receive ADS-B including SIL-0 and also Flarm and output on ARINC429 to a GTN etc

Avionics geek.
Fairoaks. EGTF

Pilotaware will output GLD90 to RS232 using a USB to RS232 adaptor:

Exporting Data from PilotAware Units to Third Party Units
PilotAware software can export location data from the on-board, non-certified GPS used on both PilotAware Classic and Rosetta units. For example, this can be used to provide some modern 1090MHz transponders, equipped with extended squitter, with the ability to provide ADSB-out when connected to a non-certified GPS input. †
† SIL level needs to be set to 0 (zero)
Physical Connection
An interconnecting lead that converts the USB output to an RS232 input is required between the two units. A suitable cable is available from Farnell here. Please note the cable must be an RS232 cable and not an RS232 TTL level cable.
The information available on the RS232 cable is provided on the Orange and Black leads
1. Orange Signal.
2. Black Ground.
This cable can be connected to any spare USB slot of the Rosetta or Classic unit, with the output of the chosen slot configured accordingly.
The numbering of the USB slots is as follows:
1. Top Left
2. Bottom Left
3. Top Right
4. Bottom Left
Configuring the Output
The configurations available on the ‘Configuration Page’ of the PilotAware Unit are as follows:
1. Auto
2. GPS
3. Transponder Trig
4. Transponder Funke
5. FLARM-out
6. FLARM-in
7. GDL90 (TBD)
9. LCD
In addition, the Baud rate can be changed to meet the individual connection requirement. 1. 4800
2. 9600
3. 19200 4. 38400 5. 57600 6. 115200

Transponder Manufacturers and Models
The physical input to, and the configuration of the host transponder will differ between manufacturers. This information will be obtained by consulting the manufacturers installation instructions and operating instructions. On some early model transponders’, a software update may be required. Also, not all models will have the required ‘extended squitter’ functionality. Please consult the manufacturer for model specific information.
Customers of PilotAware have connected to several types of modern transponder such as Trig, Becker and Funke who all provide input information in their manuals. Garmin is unfortunately reluctant to provide the information.
Help and Tips from the Forum
Experience and tips on how individual installations were done are provided by supporters on the PilotAware forum here . For information search on installing your type of transponder. Also provide information on your installation to help others.
For example, here is a thread on installing a GPS feed to a Becker Transponder and the help provided from the forum supporters.
Connecting More than One Device
More than one output can be provided from PilotAware Rosetta. For example, a GPS output for the transponder can be provided and also an output, on a second USB slot can be provided to show traffic on a glass screen such as a Dynon Skyview. Each port will be individually configured.
PilotAware Team.


That sounds pretty good – many thanks.

@wigglyamp is that ARINC429 stream documented? Presumably one can analyse it easily enough if it isn’t; I don’t suppose many vendors are using an encrypted stream on the ARINC429 physical interface.

The GDL90 RS232 output sounds fine also.

Shoreham EGKA, United Kingdom
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