DELTA LOOP 7 MHz Homebrew
FULL WAVE DELTA LOOP 7 MHz Homebrew Project homebrew pada kesempatan ini adalah pembuatan antenna Full Wave Delta Loop 1 elemen yang direncanakan bekerja di Frekuensi monoband 7 Mhz. Rumus Dasar 1.1. Teori perhitungan untuk antenna Delta Loop banyak di internet dan literature, untuk eksperimen kali ini saya mempergunakan perhitungan dari situs Om Damien – F5RRS , bisa dilihat disini : http://f5rrs.pagesperso-orange.fr/ The delta loop can be coarsely cut using standard formula of wavelength (300 / Operating base frequency) but the exact formula for a full wavelength (m) delta loop is (299.8 / Operating base frequency) x 1.05 Quarter wave 75 Ohm matching transformer = 75 / Operating base frequency x velocity of the coax. Calculation for 40m slanted delta loop : Frequency : 7.020 MHz (for CW and Digimode) Lambda = (299.8/7.020) x 1.05 = 44.84m of 2.5mm² copper wire For equilateral triangle = 44.84m / 3 = 14.95m each side Quarter wave 75 Ohm matching tran...
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