Mclapp M4 (10x9.5) 4-Bay provides the best Raw Gain, with CM4228HD close behind, except for additional Gain Loss on lower channels (which might NOT be that much, see CM4228HD results).
Stacked 8-El FD-Yagis (with 2 Reflectors each) provides better Raw Gain and esp. F/B & F/R Ratio than the 15-El "Double-Quad" Yagi (Stacked 8-El Yagis, except one common Bi-Quad replaces two Active Elements).
7-El Quagi and 7-El Bi-Quad Yagi provide lower Raw Gain (as expected) but with minimal F/B & F/R Ratio performance on mid-band and higher freqs.
EDIT (27Jun2013): Updated Comparison Chart with improved results for Stacked 8-El FD-Yagis (w 2-Reflector Rods).
EDIT (4Jul2013): Added two Comparison Charts, including 8-El FD-Yagi (2RR) and 8-El Bi-Quad Yagi (2RR).
Date(s): 23 Jun 2013. Album by holl_ands. 1 - 3 of 3 Total. 5351 Visits.
enlarge 280KB, 1024x696 1 Compare UHF Raw Gain and F/R Ratios for: Vertically Stacked 8-El Yagis, 15-El Double-Quad Yagi, 8-El FD-Yagi (2RR), 7-El Quagi and 7/8-El Bi-Quad Yagis.
enlarge 252KB, 1024x696 2 Compare UHF Raw Gain and SWR for: Vertically Stacked 8-El Yagis, 15-El Double-Quad Yagi, 8-El FD-Yagi (2RR), 7-El Quagi and 7/8-El Bi-Quad Yagis.
enlarge 256KB, 1024x696 3 Compare UHF Raw Gain and F/R Ratios for: M4(10x9.5) 4-Bay, CM4228HD 8-Bay, Vertically Stacked 8-El Yagis, 15-El Double-Quad Yagi, 7-El Quagi and 7-El Bi-Quad Yagi. "Si" View Comments...