"technology"=>"GSM 900;UMTS","tower:type"=>"communication"
"technology"=>"Tetra C2000","tower:type"=>"communication","tower:construction"=>"freestanding","communication:radio"=>"yes"
"technology"=>"UMTS;GSM 1800;GSM 900","tower:type"=>"communication"
"tower:type"=>"communication:mobile_phone","source:date"=>"2014-05-01"
"tower:type"=>"communication","description"=>"Air raid siren","tower:construction"=>"freestanding"