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This is a spare time project of some people interested in planes, ships, radiosondes maps and stuff.

ADS-B

Allows the tracking of aircrafts like planes, helicopters and so on.

• Needs one SDR + one special antenna and maybe band-pass filter
• Can receive up to hundreds of aircrafts in distances up to 500km depending on location and setup
• Can be implemented everywhere with a clear view to the sky
• Start from scratch or start feeding from your existing station now

MLAT

Is an add-on to ADS-B to collaboratively track the positions of aircrafts that can not be determined by ADS-B.

• Need working ADS-B reception
• No additional hardware needed
• Can be implemented everywhere where ADS-B is implemented

AIS

Allows tracking of ships, buoys and some SAR aircrafts

• Needs one SDR + one antenna which can be shared with some not all of the other services
• Can receive up to hundreds of ship in distances up to 100km
• Can be implemented in locations near the sea or near waterways that are used by ships or even in spots far away from water if the antenna is up high, like on a hilltop

Radiosonde

Allows tracking of weather balloons

• Needs one or more SDRs + one antenna which can be shared with some not all of the other services and a antenna splitter
• Can receive up to a couple of radiosondes (one per SDR at a time) in distances up to 500km
• Can be implemented everywhere with a clear view to the sky

Please read the different chapters carefully before buying hardware so you can decide which route you want to follow.

There may be errors in our descriptions and we are not responsible for problems you may encounter.

Happy tinkering!