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Updated 2 Modem Details (markdown)

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Mark Jessop 2020-12-27 13:59:00 +10:30
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2---Modem-Details.md

@ -8,7 +8,7 @@ where
<preamble> = 0x1B1B1B1B
<unique word> = 0x2424
```
The payload consists of a [22-byte long binary packet](https://github.com/projecthorus/horusdemodlib/wiki/Packet-Format-Details), encoded with a Golay (23,12) code, and then interleaved and scrambled, for a total encoded length of 43 bytes. The binary packet format is [available here](https://github.com/darksidelemm/RS41HUP/blob/master/main.c#L72), and the golay-encoding/interleaving/scrambling is performed by [horus_l2_encode_packet](https://github.com/darksidelemm/RS41HUP/blob/master/horus_l2.c#L117).
The payload consists of a [22-byte long binary packet](https://github.com/projecthorus/horusdemodlib/wiki/4-Packet-Format-Details), encoded with a Golay (23,12) code, and then interleaved and scrambled, for a total encoded length of 43 bytes. The binary packet format is [available here](https://github.com/darksidelemm/RS41HUP/blob/master/main.c#L72), and the golay-encoding/interleaving/scrambling is performed by [horus_l2_encode_packet](https://github.com/darksidelemm/RS41HUP/blob/master/horus_l2.c#L117).
At the start of a packet is a Payload ID (one byte). A lookup table for payload IDs is [located here](https://github.com/projecthorus/horusbinary/blob/master/payload_id_list.txt). **If you are going to fly your own payload using this mode, you must get a payload ID allocated for your use. This can be done by submitting an issue or a pull request to this repository, or e-mailing me at vk5qi (at) rfhead.net**