Abstract
Repeater strongly supports the use of radio communication equipment for communication. The location of the repeater is usually at a high altitude so that the repeater's radio wave beam is not blocked by anything. The repeater arrangement is done by going directly to the repeater location so it is very inefficient from the time and accommodation factor. Therefore, a study was conducted to control the radio repeater settings remotely in order to reduce the accommodation of repeater control by visiting the radio repeater location. Control of radio repeater settings uses DTMF (Dual Tone Multi-Frequency) technology which sends DTMF signals and then converts them to binary data to be processed into data that is used for repeater control such as turning on and off the radio, setting high and low power, and adjusting channels on the repeater. the radio repeater. This system is also equipped with sending notifications in the form of SMS of the repeater operational conditions or settings. The research resulted in a remote control system based on DTMF technology equipped with a GSM/GPRS SIM800L module which is used to connect a smartphone to the system and send repeater operational notifications after controlling the repeater setting function. By using Telkomsel provider, the resulting delay when sending orders is 0.5 seconds and the delay in receiving SMS notifications is 12.96 seconds. Meanwhile, using Indosat provider, the resulting delay when sending commands is 0.43 seconds and the delay in receiving SMS notifications is 10.57 seconds.
Highlights
Radio 2-meter band adalah radio frekuensi yang memiliki panjang gelombang 2 meter yang berpusat di frekuensi 144 MHz – 150 MHz yang didapatkan berdasarkan formulasi panjang gelombang (λ)
Repeater strongly supports the use of radio communication equipment for communication
so that the repeater's radio wave beam is not blocked by anything. The repeater arrangement is done by going
Summary
Radio 2-meter band adalah radio frekuensi yang memiliki panjang gelombang 2 meter yang berpusat di frekuensi 144 MHz – 150 MHz yang didapatkan berdasarkan formulasi panjang gelombang (λ). Penelitian dilakukan dengan tujuan untuk membuat suatu sistem yang dapat mengendalikan atau mengoperasikan pengaturan repeater dari jarak jauh menggunakan teknologi DTMF (Dual Tone MultiFrequency). Penelitian dengan judul aplikasi kontrol jarak jauh lampu dan pagar rumah dengan teknologi Dual Tone Multiple Frequency (DTMF) ini bertujuan untuk mengontrol lampu dan pagar rumah mereka dari jarak jauh kapanpun dan dimanapun menggunakan teknologi DTMF pada telepon sehingga kendala yang saat ini dihadapi yaitu pemborosan penggunaan listrik dan dampat buruk lainnya seperti korsleting listrik dapat dikurangi atau bahkan dihilangkan. Pada penelitian yang berjudul Remote Controlling Of An Agricultural Pump System Based On The Dual Tone Multi-Frequency (DTMF) Technique juga memanfaatkan pensinyalan DTMF untuk mengontrol perpindahan beban listrik seperti pompa pertanian yang berada di daerah terpencil [5]
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