> ## Documentation Index
> Fetch the complete documentation index at: https://docs.altnautica.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sources

> Per-relay FEC stats and aggregated downlink stats on a receiver node.

# Sources

The Sources page is the `receiver` role's view into the streams flowing
from each relay node into this aggregator. It surfaces the bitrate and
frame counters per source, plus the combined downlink.

<Frame caption="Sources page on a receiver node with no relays contributing yet.">
  <img src="https://mintcdn.com/altnautica/5zXPDtKnZ8vtFffN/images/dashboard/ground/sources-direct-full.png?fit=max&auto=format&n=5zXPDtKnZ8vtFffN&q=85&s=f45b7ae61b4d33182bb0b6acdb37c0d8" alt="Sources page" width="2880" height="1800" data-path="images/dashboard/ground/sources-direct-full.png" />
</Frame>

## Fields

| Field           | Meaning                                                          |
| --------------- | ---------------------------------------------------------------- |
| Aggregated      | Combined downlink bitrate across all relays.                     |
| Frames combined | Total frames successfully merged from multiple relays.           |
| Frames dedup    | Frames the receiver dropped as duplicates from a parallel relay. |
| Per-source      | One row per relay node with its own bitrate and FEC counters.    |

## Role gating

The Sources page requires the `receiver` role. On other roles the
sidebar entry is hidden and the URL renders the "Not available on this
profile" panel.

## Backend endpoints

| Method | Path                         | Purpose                            |
| ------ | ---------------------------- | ---------------------------------- |
| GET    | `/api/v1/dashboard/snapshot` | Powers the panel (`sources` block) |
| GET    | `/api/v1/ground-station/wfb` | WFB receiver config                |

## Troubleshooting

<Accordion title="Per-source list is empty">
  No relays are contributing. Confirm the relay nodes are up, on the
  same channel, and reachable via mesh (see the Mesh page). The
  receiver only counts relays that have completed the mesh handshake.
</Accordion>

<Accordion title="Frames dedup is rising fast">
  Two relays are duplicating the same air-side stream. This is expected
  when both relays have line-of-sight to the drone; the dedup keeps the
  downlink clean. If aggregated bitrate is also growing, the system is
  healthy.
</Accordion>

## Related

* [Receiver mode](/ground-agent/receiver-mode)
* [Mesh overview](/ground-agent/mesh-overview)
* [Three roles](/ground-agent/three-roles)