Style, more airspy examples.
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# Airspy protocol
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# Airspy ADSB protocol
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## Ports
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@@ -7,19 +7,19 @@
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## Format
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Textual format, similar to [raw](raw.md), but extended with MLAT and signal
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level data. Unlike raw format, lines are terminated with `0x0d 0x0a` (`\r\n`).
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level data. Unlike raw format, lines are terminated with `\r\n` (`0x0d 0x0a`).
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## Frame structure
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* `0x2a` (`*`)
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* `*` (`0x2a`)
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* 7 or 14 byte frame (see [raw](raw.md))
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* `0x3b` (`;`)
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* `;` (`0x3b`)
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* 4 byte MLAT timestamp (see below)
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* `0x3b` (`;`)
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* `;` (`0x3b`)
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* 1 byte MLAT precision (see below)
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* `0x3b` (`;`)
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* `;` (`0x3b`)
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* 2 byte big-endian RSSI
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* `0x3b 0x0d 0x0a` (`;\r\n`)
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* `;\r\n` (`0x3b 0x0d 0x0a`)
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## MLAT timestamp
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@@ -35,6 +35,26 @@ source position.
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## Examples
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* `*5DA7DA1CE30DE5;D03B5A4B;0A;7AF3;\r\n`
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* `*` (`0x2a`): Frame start
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* `5DA7DA1CE30DE5`: Mode-S short data
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* Decoded: `0x5d 0xa7 0xda 0x1c 0xe3 0x0d 0xe5`
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* `;` (`0x3b`): Delimiter
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* `D03B5A4B`: MLAT counter
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* Decoded: `0xd0 0x3b 0x5a 0x4b`
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* Decimal: 3493550667
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* `;` (`0x3b`): Delimiter
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* `0A`: MLAT precision
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* Decoded: `0x0a`
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* Decimal: 10
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* 10 * 2 MHz = 20 MHz MLAT counter clock
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* `;` (`0x3b`): Delimiter
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* `7AF3`: RSSI
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* Decoded: `0x7a 0xf3`
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* Decimal: 31475
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* 31475 / 65536 * 100% = 48%
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* `;` (`0x3b`): Delimiter
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* `\r\n` (`0x0d 0x0a`): Frame end
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* `*8DA07CD89915908778A01E4B4C86;D03D33F9;0A;8437;\r\n`
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