Labels:bulletin board | dialog box | earth | person | sky | window OCR: Section Es tim tea dis tances mee RF power dens t guidel ines tn the main beat of typica 3 -elemen t triband" Yazi for the pue 28MHz ama teur radio bands Calcula tions include the EP ground reflection fac tor of Frequency 14MHz An tenna B Con tro] Uncon1 trolled Limi Iransri power tance ti nis tance [Yatts] con trolled linit uncontrolled linit 100 500 1000 1500 Frequency 21MHz An tenna Controllec Uncontrolled Limi 108 Iransi powe tance Distance [Yatts] con trolled linit uncon tro lled linit 100 500 1000 1500 tima density beam typical 28NHz lude Freouency 14NHz Limit lini Frequenc pove