Hi-VHF Bi-Quad 4ReflRods

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Hi-VHF Bi-Quad 4ReflRods - nikiml

Hi-VHF Bi-Quad with 4 Reflector Rods analyzed using 4nec2.
Optimized for entire Hi-VHF Band, see model "BQ4V" on nikml website:
http://clients.teksavvy.com/~nickm/biquads/bq4V.html

Raw Gain is 10.2-9.5 dBi with SWR under 2.2.
Overall Size = 57"H x 46.7"W

Date(s): 20 Aug 2011. Album by holl_ands. 1 - 11 of 11 Total. 7911 Visits.

enlarge 87KB, 851x1024 1 Hi-VHF Bi-Quad with 4 Reflector Rods 3D View Inner Diagonals are 24-in long. Outer Diagonals are 16.5-in long. Feedpoint Gap = 2.6-in.	enlarge 275KB, 1024x998 2 Hi-VHF Bi-Quad with 4 Reflector Rods Front View Inner two Rods are 46.7-in long. Outer two Rods are 32.3-in long. [1 small box = 1.0-inch] [1 big box = 5.0-inch]	enlarge 99KB, 369x1024 3 Hi-VHF Bi-Quad with 4 Reflector Rods Side View Reflector Rods are 12-in behind the Bi-Quad. [1 small box = 1.0-inch] [1 big box = 5.0-inch]
enlarge 159KB, 1152x609 4 Hi-VHF Bi-Quad with 4 Reflector Rods Hi-VHF Raw Gain = 10.2 to 9.5 dBi	enlarge 179KB, 1152x609 5 Hi-VHF Bi-Quad with 4 Reflector Rods Hi-VHF SWR (300-ohm) under 2.2	enlarge 156KB, 1152x609 6 Hi-VHF Bi-Quad with 4 Reflector Rods Hi-VHF Impedance
enlarge 308KB, 1024x1024 7 Hi-VHF Bi-Quad with 4 Reflector Rods Azimuthal Pattern at 174 MHz	enlarge 305KB, 1024x1024 8 Hi-VHF Bi-Quad with 4 Reflector Rods Azimuthal Pattern at 198 MHz	enlarge 305KB, 1024x1024 9 Hi-VHF Bi-Quad with 4 Reflector Rods Azimuthal Pattern at 216 MHz
enlarge 26KB, 791x1024 10 Hi-VHF Bi-Quad with 4 Reflector Rods 4nec2 File	enlarge 106KB, 455x1024 11 Hi-VHF Bi-Quad with 4 Reflector Rods Top View Reflector Rods are 12-in behind the Bi-Quad. [1 small box = 1.0-inch] [1 big box = 5.0-inch]

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http://topscripts.ru/2011/03/page/167/
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- BernardAutot, Thu, 9 Mar 2023 5:55PM

I really like your Nikiml's Antenna Pages. Great easy to understand graphics. (Spread sheets are hard for me to understand.)
Have you tried running your VHF bi-quads in the UHF band?
I made a bi-quad with the bottom loop being 15"x4 (60") and the top loop being 13"x4 (52") it works well for both VHF-hi and UHF. I need a bi-directional antenna so I haven't tried reflectors. (If I were to try a reflector I would start by setting them about 15" behind the bi-quad.)
- Tom Street, Fri, 24 Feb 2012 5:37PM

compact and simple.
- sam Wilson, Sat, 27 Aug 2011 12:27PM