UHF 13-Element Folded Dipole Yagi (2 Reflector Rods), with ALL Directors in Front of the Second Director having Equal Length, analyzed using 4nec2. Boom Length = 45.2 inches.
UHF Raw Gain = 8.8 to 14.2 dBi, F/B & F/R Minimum = 21.2 dB (EXCL) and SWR Under 1.6 (EXCL).
Without Equal Director constraint, UHF Raw Gain = 9.3 to 13.4 dBi, hence we picked up 0.8 dB on higher channels but lost 0.5 dB on lowest and only lost about 1 dB for F/R & F/B Minimum. The 4.1 dB difference between lowest and higher freqs would disadvantage reception on lowest Channels, esp. when using a Preamp.
Date(s): 7 Jul 2013. Album by holl_ands. 1 - 16 of 16 Total. 5204 Visits.