▁man - made ▁structure ▁in ▁the ▁European ▁Union . ▁The ▁smaller ▁m ast ▁also ▁carried ▁a ▁small ▁cabinet ▁on ▁its ▁lower ▁section . ▁ ▁By ▁using ▁the ▁large ▁m asts ▁of ▁the ▁G art ow - H ö beck ▁transmit ter ▁and ▁the ▁Berlin - F ro hn au ▁radio ▁relay ▁station , ▁the ▁first ▁direct ▁direction al ▁radio ▁link ▁between ▁former ▁West ▁Germany ▁and ▁Berlin ▁could ▁be ▁realized . ▁This ▁link ▁was ▁in ▁service ▁until ▁German ▁reun ification ▁in ▁ 1 9 9 0 . ▁ ▁Bes ide ▁these ▁two ▁m asts , ▁there ▁is ▁also ▁a ▁free - standing ▁direction al ▁radio ▁tower ▁much ▁lower ▁than ▁the ▁m asts , ▁which ▁carried ▁until ▁ 1 9 9 0 ▁huge ▁disk ▁anten nas ▁for ▁the ▁scattered ▁direction al ▁radio ▁link ▁to ▁former ▁West ▁Berlin . ▁ ▁Ob sole te ▁m ast ▁ ▁After ▁ 1 9 9 0 , ▁the ▁ 3 2 7 - met re ▁tall ▁m ast ▁became ▁increasing ly ▁ob sole te , ▁and ▁was ▁made ▁completely ▁redundant ▁by ▁the ▁digital ▁switch over ▁of ▁TV ▁broadcast ing ▁in ▁ 2 0 0 8 . ▁As ▁there ▁was ▁no ▁requirement ▁to ▁keep ▁two ▁super t all ▁m asts ▁at ▁the ▁site , ▁it ▁was ▁demol ished ▁with ▁explos ives ▁on ▁August ▁ 2 0 , ▁ 2 0 0 9 . ▁ ▁External ▁links ▁▁▁▁▁▁ ▁http :// www . sk ys cra per page . com / di agr ams /? b 4 6 6 7 4 ▁ ▁http