Dutono, Titon, Zulmi Zakariyah, Tribudi Santoso, and Denny Setiawan. “A Simplified Sounding System for Finding NVIS Channel Availability to Support Government Radio Networks in Indonesia”. EMITTER International Journal of Engineering Technology 7, no. 1 (June 15, 2019): 326-342. Accessed November 21, 2024. https://emitter.pens.ac.id/index.php/emitter/article/view/388.