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wiedehopf edited this page Apr 7, 2022 · 5 revisions

ADS-B / beast data with reduced bandwidth

https://github.com/adsbxchange/readsb

Some hints if you have trouble building: https://github.com/wiedehopf/adsb-wiki/wiki/Building-readsb-from-source

readsb --net --net-only --quiet --net-beast-reduce-interval 0.5 --net-connector feed.adsbexchange.com,30004,beast_reduce_out,feed.adsbexchange.com,64004 --net-heartbeat 60 --net-ro-size 1280 --net-ro-interval 0.2 --net-ro-port 0 --net-sbs-port 0 --net-bi-port 0 --net-bo-port 0 --net-ri-port 0 --net-connector 127.0.0.1,30005,beast_in

You can also install the package and add this to your command line arguments in the configuration file:

--net-beast-reduce-interval 0.5 --net-connector feed.adsbexchange.com,30004,beast_reduce_out,feed.adsbexchange.com,64004

If you need the feeder to use less internet bandwidth, i'd recommend increasing --net-beast-reduce-interval to 1 or even 2. In that case you might also not want to use MLAT as it also uses a bit of bandwidth. Typical data usage ADS-B: 1 kB/s per 10 aircraft being received. Typical data usage MLAT: varies, 1 to 2 kB/s for a receiver that sees 50 aircraft. bandwidth usage does not necessarily increase with aircraft count.

MLAT

https://github.com/adsbxchange/mlat-client

It's recommended to install into a python virtualenv

git clone --depth 5 https://github.com/adsbxchange/mlat-client.git /tmp/mlat-client
cd /tmp/mlat-client
VENV=/usr/local/share/adsbexchange/venv
mkdir -p $VENV
/usr/bin/python3 -m venv $VENV
source $VENV/bin/activate
python3 setup.py build
python3 setup.py install

/usr/local/share/adsbexchange/venv/bin/mlat-client --input-type dump1090 --no-udp --input-connect localhost:30005 --server feed.adsbexchange.com:31090 --user your_user_123_unique --lat 50.12345 --lon 10.12345 --alt 255m --results beast,connect,localhost:30104 --results basestation,listen,31003

Username must be unique, coordinates need to precise to 5 m / 15 ft. Synchronisation can be checked here: http://adsbx.org/sync

UUID

adsbexchange would appreciate if you would generate an UUID for the above clients to use, but it's not required at least for now:

sudo mkdir -p /usr/local/share/adsbexchange
cat /proc/sys/kernel/random/uuid | sudo tee /usr/local/share/adsbexchange/adsbx-uuid

File location is hard-coded for the moment in mlat-client, for readsb there is the option --uuid-file /usr/local/share/whatever.uuid

ADS-B / beast data from port 30005 (default port for dump1090)

Uses more bandwidth than using readsb and is NOT recommended.

/usr/bin/socat -u TCP:localhost:30005 TCP:feed.adsbexchange.com:30005
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