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+# Airspy ADSB protocol
+
+## Ports
+
+* 30001: client -> server feed
+* 30002: server -> client feed
+
+## Format
+
+Simple textual format.
+
+
+## Frame structure
+* `*` (`0x2a`)
+* 7 or 14 byte frame
+* `;\n` (`0x3b 0x0a`)
+  
+
+## Examples
+* `*96A328343B1CA6AB3CE9AD87897A;`
+  * `*` (`0x2a`): Frame start
+  * `96A328343B1CA6AB3CE9AD87897A`: Mode-S long data
+    * Decoded: `0x96 0xa3 0x28 0x34 0x3b 0x1c 0xa6 0xab 0x3c 0xe9 0xad 0x87 0x89 0x7a`
+  * `;` (`0x3b`): Delimiter
+  * `\n` (`0x0a`): Frame end
+
+* `*59A880E10968EF;`
+  * `*` (`0x2a`): Frame start
+  * `59A880E10968EF`: Mode-S short data
+    * Decoded: `0x59 0xa8 0x80 0xe1 0x09 0x68 0xef`
+  * `;` (`0x3b`): Delimiter
+  * `\n` (`0x0a`): Frame end
+
+
+## Implementations
+
+* [antirez dump1090](https://github.com/antirez/dump1090)
+* [MalcolmRobb dump1090](https://github.com/MalcolmRobb/dump1090)
+* [mutability dump1090](https://github.com/mutability/dump1090)
+* [PiAware dump1090](https://flightaware.com/adsb/piaware/install)