#antennasUnmoderated tagAll postsExplore CommunitiesTrending CommunitiesSteemitCryptoAcademySteemit FeedbackNewcomers' Communityআমার বাংলা ব্লগKorea • 한국 • KR • KOSteem AllianceSTEEM CN/中文Comunidad LatinaWORLD OF XPILARBeauty of CreativityAVLE 일상Tron Fan Club#antennasTrendingHotNewPayoutsMutedantoinemartin (28)in #antennas • 3 days agoThe Black Technology of 470MHz Antennas: City Street Lights Automatically Turn Off at Midnight, All Thanks to It for Saving ElectricityIntroduction With the accelerating process of urbanization, the energy consumption problem of city street lights has…