The Voronezh-DM early-warning radar that Russia is building in the Kaliningrad region is being built at the old Dunayevka air base near Pionersky. The construction site can be seen at Yandex Maps (my thanks to Bernd Reuter for locating finding it there). Google has not yet updated its imagery of the region.

According to a report in Krasnaya Zvezda, the site will have only one radar deployed there (unlike the site at Armavir that has two radars).