Variant Bruce Arrays analyzed using 4nec2, based on Fig 8.13 in Joe Carr's "Antenna Toolkit, 2nd Ed": http://books.google.com/books?id=q11p4eduQGsC&pg=PA166&lpg=PA166&dq=Joe+Carr+Six+Shooter&source=bl&ots=KLrTrEdlp4&sig=GDBun3xjKTV3C_eOi7N9BpXW5G4&hl=en&ei=-nRqSsiyHZKBtwfp-4zHBQ&sa=X&oi=book_result&ct=result&resnum=1
Actually these are variations on the "True" Bruce Array: http://rudys.typepad.com/ant/files/antenna_array_80160m.pdf
Although these Bruce Array Variants provide Raw Gain across most of the New UHF TV Band, frequency range for low SWR is very small. Unsuitable for either Hi-VHF or UHF TV Bands due to the need for a tunable matching network.
Date(s): 26 July 2009. Album by holl_ands. 1 - 12 of 12 Total. 6182 Visits.
enlarge 0KB, 1024x831 1 Variant4 Center Fed Bruce Array (All Half-Wavelength)
enlarge 0KB, 1024x819 2 Variant4 Center Fed Bruce Array - Raw Gain
enlarge 0KB, 1024x819 3 Variant4 Center Fed Bruce Array - SWR (300-ohm)
enlarge 0KB, 1024x819 4 Variant4 Center Fed Bruce Array - SWR (75-ohm)
enlarge 0KB, 1024x819 5 Variant4 Center Fed Bruce Array - Impedance
enlarge 24KB, 791x1024 6 Variant4 Center Fed Bruce Array (All Half-Wavelength) Example 4nec2 File
enlarge 0KB, 1024x831 7 Variant5 Center Fed Bruce Array (Shortened)
enlarge 0KB, 1024x819 8 Variant5 Center Fed Bruce Array - Raw Gain
enlarge 0KB, 1024x819 9 Variant5 Center Fed Bruce Array - SWR (300-ohm)
enlarge 0KB, 1024x819 10 Variant5 Center Fed Bruce Array - SWR (75-ohm)
enlarge 0KB, 1024x819 11 Variant5 Center Fed Bruce Array - Impedance
enlarge 25KB, 791x1024 12 Variant5 Center Fed Bruce Array (Shortened) Example 4nec2 File