36°04'08"N 47°30'38"E. Qamchqay Sepehr (Sky) radar system replacing the outdated Peace Ruby/Spellout/Peacenet system.
Iran has purchased at least 4 Russian Rezonas-N VHF over-the-horizon backscatter air defense radars.
These have been constructed in two variants. The larger Sepehr [Sky] phased array radars are formed in a quadrilateral antenna array about 100 meters on a side, with very tall transmitter towers on the corners.
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