u/mister_drgn

(This is a technical question related to TAK usage. Apologies if I'm posting in the wrong place.)

I was wondering if someone could help me out with understanding the fundamentals of TAK, or point me to relevant documentation. I'm a computer science researcher interested in working with TAK, and I've got a local server up and running in a VM. My core problem is that I can't tell if things are broken or working as expected.

My local server has an admin dashboard which provides WebTAK, with a map of the world. On that map, I can see a marker at 0, 0 which apparently corresponds to the admin who is connected via the website. I then have a client, which connects to the server using the admin certificate and sends a COT message. A corresponding marker pops up in WebTAK, but it disappears if I refresh the page, or if I open a new WebTAK instance after sending the message. It's as if either the message isn't being saved anywhere, or WebTAK is failing to retrieve it.

So I was hoping someone could tell me if (1) this is expected behavior, (2) this indicates a likely bug in WebTAK, or (3) there's some more general issue with my COT message or my TAK server.

I'd appreciate any help with this, or a pointer to somewhere else where I should be asking. Let me know if I need to provide more info. Thank you.

EDIT: Here's an example of a typical COT message. Note that the stale time is several hours in the future.

<event version="2.0" uid="swift-agent-06" type="a-f-G-U-C" how="m-g" time="2026-10-08T18:44:14.752Z" start="2026-10-08T18:44:14.752Z" stale="2026-10-09T03:04:14.752Z">

  <point lat="38.8951" lon="-77.0364" hae="0.0" ce="10.0" le="10.0"/>

  <detail>

<contact callsign="SwiftBot6"/>

<remarks>Swift TAK CoT test event</remarks>

<__group name="Cyan" role="Team Member"/>

  </detail>

</event>

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It feels like the Minifreak audio is just barely late, sometimes. However it’s hard to be sure. And when I tried recording audio in Loopy and zooming in very close on the waveform, I couldn’t really find any evidence of lag. Maybe a 3-5ms lag, maybe not even that.

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