This option enables to install mechanically rotating radar antennas used in maritime, air or land surveillance on top of the shelter.
The depicted support is compatible with TERMA SCANTER 12, 15, 18 or 21 feet antennas. (link to TERMA web site)
Other radar antennas can also be fitted with appropriate base plate: CHL, Cherno More, EASAT, FURUNO, GEM radars, Litton Sperry Marine, Raytheon, Selesmar…