Simple to use ADSB Feeder Images
just) for common Single Board Computers
Additional Options for the ADSB Feeder
In general, the basic setup should be sufficient for most use cases. The bare minimum of information is entered on the Basic Setup page, aggregators can be selected on the Aggregators page. The other options are described below in more detail.
Backup / Restore
You can backup the settings as well as the history of statistics on the Backup page. Click the Backup button and store the zip file on your computer. If needed, you can later go to the Restore page (for example after installing a newer Feeder Image on your system) and restore the data. Once you upload the zip file you will be shown all files and folders that differ from the running system and can choose which ones to restore.
On the Advanced page you are offered some additional options, some of which depend on your hardware.
- By default, MLAT privacy is enabled, which prevents your site from being shown on typical MLAT coverage maps. Turning this off will show a rough estimate of your location, together with the MLAT stations you are connected to on the MLAT coverage maps of your aggregator.
- By default, the ADSB Feeder Image shows the best open data guess for the route information of the planes shown in the tar1090 user interface. If you don't want this information, you can turn it off here.
- If you want the theoretical range of an ideal antenna at your location shown in the tar1090 user interfacem, you can use HeyWhatsThat to create an ID that will be used to provide that visualization.
- If you are using an LNA or some other device that requires power via bias-T (assuming your SDR supports this setting), you can turn this on here.
- If you have more than one SDR connected to your feeder SBC, there will be a selection below this to assign each SDR its role. This is commonly needed when supporting both standard ADS-B at 1090MHz as well as the US-only UAT at 978MHZ.
On the Expert page you will find some more advanced settings
- By default, automatic gain is enabled for your SDR. You most likely don't want to change this if you are using an airspy SDR, but with traditional RTL SDRs this can be useful if the manual auto gain proces s is getting stuck or is taking too long to find an acceptable value
- In some very unusual circumstances you may want to be able to add extra arguments for the Ultrafeeder, e.g., if you are feeding a "standard aggregator" that accelpts beast input but for whatever reason isn't supported by the web UI.
- While in most circumstances you shouldn't need to to access the adsb feeder SBC directly, if this is something you want to be able to do, here is where you enter the public key of an ssh key-pair which will allow you to log in as root.
- Conversly, if you want to slightly reduce the attack surface of your SBC (for example if it is installed on someone else's premises), you can remove some obvious attack vectors that would allow someone else to take over your feeder. This is not the same as truly hardening the image; you should assume that someone with access to the hardware will be able to remove the µSD card which will allow them to get access to the system.
- The next two options allow you to shutdown or reboot your SBC. Please note that there are several scenarios where an SBC will not successfully reboot (or not turn of power on shutdown). Please test this capability before relying on it.
- The feeder can be set up to update its base OS, the containers that implement the feeder functionality as well as the feeder application (i.e. the web UI that controls the device) automatically.
- You can also trigger the container and feeder app updates manually from this page.
- Finally, you can add your feeder system to a ZeroTier global area network in order to be able to access it remotely. Enter the network ID here (you have to set this up at the ZeroTier website, first).