idk what I'm doing wrong and honestly there's not much to do wrong now, is there? XD
One thing that could be problematic – it's inserted into a Legendary SA-quality tank. It could be, that the radar equipment only works with specific vehicles...?

I didn't try with a normal tank, too lazy for that, sorry

Hello! Could it be that it just takes a moment for the charting to catch up to the tank's location? Legendary tanks can be very fast.

nope, I waited at the edge and even drove into the uncharted terrain and got lost for a minute trying to navigate my tank through vulcanus cliffs using the minimap. An adventure! XD

Quick screenshot: https://imgur.com/a/Lntl0Y8

Interesting. And are you sure that solar panel can provide enough power for the Radar? My feeling is that the radar's electric buffer isn't full.

You could also just trust my word but well, if you need proof.
https://imgur.com/a/4VeyZrP
First up, the solar panel provides 300kW on Vulcanus. Second, the radar actually only draws 1 watt, not 30kW as described. I have opened a different discussion thread for the faulty wattage though: https://mods.factorio.com/mod/radar-equipment/discussion/6861722c56e858a43aa5409a

If the new version still doesn't work for you, could you give me your save file?

https://drive.google.com/file/d/1m_Y_1iuFTgQBdJ8E68B9PDAekdgcRfZL/view?usp=sharing
Go to Vulcanus, all the way to the left ← of the map, left of all the solar.

(You can also go demolisher hunting in that save! 7 shots, and you take 0 damage if you wait a little until you can attack its tail)

Hmmm. Somehow my code doesn't know about that tank. Do you remember how you built it? And how you added the equipment? Did you maybe have two of them in the equipment at any point? Added them though ghosts? Maybe did something weird with the tank using a mod? Did you copy-paste the entire tank?

Oh and to fix it just take it out and put it back in. Even through bots. Then it should work again.

Hmmm. Somehow my code doesn't know about that tank. Do you remember how you built it? And how you added the equipment? Did you maybe have two of them in the equipment at any point? Added them though ghosts?

Very likely ghosts, very likely added the ghosted radar before the tank was built. Can't remember for sure though.

The fix worked by the way, thx!