Wildwillie's Hi-VHF+UHF Dreamcatcher (Hourglass) Bowtie-In-Loop variant (X0498-Rev2-Wide) analyzed using 4nec2.
Excellent performance on both Hi-VHF and New UHF TV Bands, with some Gain loss & SWR mismatch in the Old UHF Band above Ch51.
UHF Raw Gain ~ 6 to 9 dBi and SWR (300-ohms) under 3.0 (Fair). HiVHF Raw Gain ~ 3.3 to 4.0 dBi and SWR (300-ohms) under 2.3 (Excellent). Ch2-FM Raw Gain = 2.9 to 2.8 to 3.1 dBi and SWR (300-ohms) = 1226 to 40 is Excessive.
EDIT (25 Sept 2014): Added Ch2-FM Band Performance Charts.
Date(s): 20 Feb 2011. Album by holl_ands. 1 - 30 of 30 Total. 15567 Visits.
enlarge 106KB, 1024x996 1 HiVHF+UHF Dreamcatcher BIL - 3D View
enlarge 211KB, 1024x768 2 HiVHF+UHF Dreamcatcher BIL - Front View [1 small box = 0.5 inch] "that 2" gap in the middle is th..." "anyone every check these measurement..." View Comments...
enlarge 30KB, 791x1024 3 HiVHF+UHF Dreamcatcher BIL - 4nec2 File
enlarge 161KB, 1152x710 4 HiVHF+UHF Dreamcatcher BIL UHF Raw Gain ~ 6 to 9 dBi
enlarge 191KB, 1152x710 5 HiVHF+UHF Dreamcatcher BIL UHF SWR (300-ohms) Under 3.0
enlarge 176KB, 1152x710 6 HiVHF+UHF Dreamcatcher BIL UHF Impedance
enlarge 315KB, 1024x1024 7 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 470 MHz
enlarge 315KB, 1024x1024 8 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 590 MHz
enlarge 319KB, 1024x1024 9 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 698 MHz
enlarge 321KB, 1024x1024 10 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 734 MHz
enlarge 314KB, 1024x1024 11 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 770 MHz
enlarge 343KB, 1024x1024 12 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 806 MHz
enlarge 139KB, 1024x788 13 HiVHF+UHF Dreamcatcher BIL TOTAL 3D Raw Gain Pattern at 584 MHz
enlarge 148KB, 1024x793 14 HiVHF+UHF Dreamcatcher BIL Horizontal 3D Raw Gain Pattern at 584 MHz
enlarge 145KB, 1024x798 15 HiVHF+UHF Dreamcatcher BIL Vertical 3D Raw Gain Pattern at 584 MHz
enlarge 169KB, 1152x710 16 HiVHF+UHF Dreamcatcher BIL HiVHF Raw Gain ~ 3.3 to 4.0 dBi
enlarge 199KB, 1152x710 17 HiVHF+UHF Dreamcatcher BIL HiVHF SWR (300-ohms) Under 2.3
enlarge 158KB, 1152x710 18 HiVHF+UHF Dreamcatcher BIL HiVHF Impedance
enlarge 323KB, 1024x1024 19 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 174 MHz
enlarge 323KB, 1024x1024 20 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 198 MHz
enlarge 326KB, 1024x1024 21 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 216 MHz
enlarge 137KB, 1024x796 22 HiVHF+UHF Dreamcatcher BIL 3D Total Gain Pattern at 198 MHz
enlarge 141KB, 1024x787 23 HiVHF+UHF Dreamcatcher BIL 3D Horiz. Gain Pattern at 198 MHz
enlarge 147KB, 1024x797 24 HiVHF+UHF Dreamcatcher BIL 3D Vertical Gain Pattern at 198 MHz
enlarge 161KB, 1024x690 25 HiVHF+UHF Dreamcatcher BIL Ch2-FM Raw Gain = 2.9 to 2.8 to 3.1 dBi
enlarge 199KB, 1024x690 26 HiVHF+UHF Dreamcatcher BIL Ch2-FM SWR (300-ohms) = 1626 to 40
enlarge 227KB, 1024x690 27 HiVHF+UHF Dreamcatcher BIL Ch2-FM Impedance
enlarge 319KB, 1024x1024 28 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 54 MHz
enlarge 318KB, 1024x1024 29 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 84 MHz
enlarge 322KB, 1024x1024 30 HiVHF+UHF Dreamcatcher BIL Azimuthal Pattern at 108 MHz
Clever Details. Best buona notte. - Yana, Sat, 18 Mar 2023 9:48AM
Hope everything is well my friend - Wildwillie, Fri, 8 Dec 2017 7:26PM
Feb 22 I assembled 25" DIA copy in Sogod,Cebu which is 58KM from Cebu City behind a mountain range. Performed well on CH3,CH7,and CH27 with a preamp. I used 1/4" copper tube. The outer ring was reinforced with 10gage steel wire inside tube and sodered close. This provided a rigid ring to suspend the other parts without any other fasteners except the 2 terminal clamps. - Sam Wilson, Wed, 23 Mar 2011 8:15PM
