Ground-based early warning radars?

[Fishbreath]

I've been playing with these a little, trying to get them to send contacts to the Su-27's HDD. So far, I haven't even gotten them to emit--I have Russian EWR and a command post in a group, but I'm not seeing any contact on the threat warning receiver in the Flanker. I take it I need other things in the group, or that EWRs and Su-27 datalinking don't work right now?

[Fishbreath]

I couldn't get it—I had a group with the command post listed above the EWRs in the air defense category, both EWRs, both kinds of generator truck, an ATC command post, and an S-300 command post and search radar, and I neither saw the radar emitting with the RWR, nor any contacts on the HDD. Anyone have any ideas, or is this a thing that just isn't working right now?

 

I guess I could try poking at the Su-27 and MiG-29S quick missions—those might shine some light on it.

 

Edit: hello, potential Google searchers from the future! According to this post and my confirmation, for an EWR, you want it to be 1) the vehicle, not the static object and 2) the first thing in its group.

Edited October 14, 2013 by Fishbreath