Selektor Antena Monitoring Frekuensi Radio Menggunakan Mikrokontroller AT 89S51
DOI:
https://doi.org/10.26418/elkha.v2i3.274Abstract
Abstract– Pemilihan antena yang tepat dan cepat dalam tugas monitoring frekuensi radio sangat diperlukan. Hal ini dikarenakan pengguna frekuensi radio tidak selalu kontinyu dalam penggunaan frekuensi radio. Apabila proses pemilihan antena tidak tepat dan cepat maka bisa berakibat kehilangan target monitoring tersebut. Suatu alternatif untuk melakukan pemilihan antena yang tepat dan cepat adalah dengan bantuan perangkat selektor antena elektronik. Selektor antena monitoring ini akan melakukan pemilihan antena untuk receiver sesuai dengan pilihan operator melalui tombol keypad. Dalam perancangan selektor antena monitoring ini menggunakan relay sebagai komponen yang berhubungan langsung ke antena dan sistem elektronik selektor. Relay juga berfungsi sebagai isolator antara sistem elektronik selektor antena monitoring frekuensi radio dan sistem antena dan receiver. Untuk melakukan pemilihan antena pada selektor antena ini digunakan beberapa tombol sebagai masukan data pemilihan. Kemudian alat ini menggunakan penampil 7 segmen sebagai display status koneksi tiap receiver dan antena yang digunakan. Bagian-bagian elektronik tersebut dikendalikan oleh mikrokontroler AT89S51 sebagai pemroses data input dan pemberi perintah pada relay dalam melakukan pemilihan antena.
Keywords– Antena, monitoring, frekuensi
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