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 holl_ands | Home > Gray-Hoverman Antennas > 
SBGH Wide Beamwidth/Omni Investigations
SBGH Wide Beamwidth Investigations (e.g. 60+degrees or multi-lobed), including higher Gain
Omnidirectional antennas analyzed using 4nec2.
In response to Vorg's situation in Tucson, AZ with THREE widely separated tower groups.

Includes following SBGH versions:

a. WW-X0412 by wildwillie: TWO Sets of Slanted Reflector Rods, 28 each Set.
b. WW-X0414 by wildwllie: One Set of 7 Slanted Reflector Rods: 3 irregularly shaped Lobes.

c. WW-X0418 by wildwillie: Elements Swept Forward + 28 Angled Reflector Rods: Nearly 180-deg coverage.
d. WW-X0418-Mod8: holl_ands Mod: 8 vice 28 Rods: More Rear Gain.
e. WW-X0418-Mod4: holl_ands Mod: 4 vice 28 Rods: Irregular, coming closer to Omni-directional coverage.
f. WW-X0418-Mod0: holl_ands Mod: NO Reflector Rods: Nearly Omni-directional coverage with 5-6+ dBi Raw Gain.

This is much more than a typical 2.15 dBi (0 dBd) Gain Omni-directional antenna.....or Rabbit-Ears.
Date(s): 10 Sept 2009. Album by holl_ands. 1 - 54 of 54 Total. 450 Visits.
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Enlarge photo 1
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Vorg in Tucson, Az has THREE widely
separated tower groups:
260-275-deg, 39-deg and "The CW" at 171-deg.


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SBGH WW-X0412 - 3D View
TWO Sets of Slanted Reflector Rods, 28 each Set


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SBGH WW-X0412 - Front View
TWO Sets of Slanted Reflector Rods, 28 each Set


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SBGH WW-X0412 - Side View
TWO Sets of Slanted Reflector Rods, 28 each Set


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SBGH WW-X0412 - Top View
TWO Sets of Slanted Reflector Rods, 28 each Set


Enlarge Microsoft Word Document 6
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DOC6
SBGH WW-X0412 - 4nec2 File
TWO Sets of Slanted Reflector Rods, 28 each Set


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SBGH WW-X0412
TWO Sets of Slanted Reflector Rods, 28 each Set
UHF Raw Gain = 7.0-9.5 dBi for 20-deg Azimuth.


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SBGH WW-X0412 - UHF SWR under 3.0
TWO Sets of Slanted Reflector Rods, 28 each Set


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SBGH WW-X0412 - UHF Impedance
TWO Sets of Slanted Reflector Rods, 28 each Set


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SBGH GH4 WW-X0414 - 3D View
One Set of 7 Slanted Reflector Rods


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SBGH GH4 WW-X0414 - Front View
One Set of 7 Slanted Reflector Rods


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SBGH GH4 WW-X0414 - Side View
One Set of 7 Slanted Reflector Rods


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SBGH GH4 WW-X0414 - Top View
One Set of 7 Slanted Reflector Rods


Enlarge Microsoft Word Document 14
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DOC14
SBGH GH4 WW-X0414 - 4nec2 File
One Set of 7 Slanted Reflector Rods


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SBGH GH4 WW-X0414 - UHF Raw Gain
One Set of 7 Slanted Reflector Rods
Rear Gain=7.1dBi on Ch44 (650-656 MHz).


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SBGH GH4 WW-X0414
One Set of 7 Slanted Reflector Rods
UHF Raw Gain = 7-13 dBi for 90-deg Azimuth (X-Axis)
Pattern for Ch31-32 (578 MHz).


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SBGH GH4 WW-X0414 - UHF SWR under 2.3
Pattern for Ch14 (470 MHz)


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SBGH GH4 WW-X0414 - UHF Impedance
Pattern for Ch51 (698) MHz)


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SBGH WW-X0418 - 3D View
Elements Swept Forward + 28 Angled Reflector Rods


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SBGH WW-X0418 - Front View
Elements Swept Forward + 28 Angled Reflector Rods


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SBGH WW-X0418 - Side View
Elements Swept Forward + 28 Angled Reflector Rods


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SBGH WW-X0418 - Top View
Elements Swept Forward + 28 Angled Reflector Rods


Enlarge Microsoft Word Document 23
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DOC23
SBGH WW-X0418 - 4nec2 File
Elements Swept Forward + 28 Angled Reflector Rods


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SBGH WW-X0418
Elements Swept Forward + 28 Angled Reflector Rods
UHF Raw Gain = 8-14 dBi for 90-deg Azimuth (X-Axis)
Minimal response to REAR on Ch44 (650-656 MHz).


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SBGH WW-X0418
Elements Swept Forward + 28 Angled Reflector Rods
UHF Raw Gain = 8-14 dBi for 90-deg Azimuth (X-Axis)


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SBGH WW-X0418 - UHF SWR
Elements Swept Forward + 28 Angled Reflector Rods


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SBGH WW-X0418 - UHF Impedance
Elements Swept Forward + 28 Angled Reflector Rods


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SBGH WW-X0418-Mod8 - 3D View
Elements Swept Forward + 8 Angled Reflector Rods
Fewer Rods for improved response to the REAR.


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SBGH WW-X0418-Mod8 - Front View
Elements Swept Forward + 8 Angled Reflector Rods


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SBGH WW-X0418-Mod8 - Side View
Elements Swept Forward + 8 Angled Reflector Rods


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SBGH WW-X0418-Mod8 - Top View
Elements Swept Forward + 8 Angled Reflector Rods


Enlarge Microsoft Word Document 32
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DOC32
SBGH WW-X0418-Mod8 - 4nec2 File
Elements Swept Forward + 8 Angled Reflector Rods


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SBGH WW-X0418-Mod8
Elements Swept Forward + 8 Angled Reflector Rods
UHF Raw Gain = 5-13 dBi for 90-deg Azimuth (X-Axis)
Fewer Rods for improved response to
the REAR on Ch44 (650-656 MHz).


Enlarge photo 34
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34
SBGH WW-X0418-Mod8
UHF Raw Gain = 5-13 dBi for 90-deg Azimuth (X-Axis)
Elements Swept Forward + 8 Angled Reflector Rods


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SBGH WW-X0418-Mod8 - UHF SWR under 2.2
Elements Swept Forward + 8 Angled Reflector Rods


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SBGH WW-X0418-Mod8 - UHF Impedance
Elements Swept Forward + 8 Angled Reflector Rods


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SBGH WW-X0418-Mod4 - 3D View
Elements Swept Forward + 4 Angled Reflector Rods


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SBGH WW-X0418-Mod4 - Front View
Elements Swept Forward + 4 Angled Reflector Rods


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SBGH WW-X0418-Mod4 - Side View
Elements Swept Forward + 4 Angled Reflector Rods


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SBGH WW-X0418-Mod4 - Top View
Elements Swept Forward + 4 Angled Reflector Rods


Enlarge Microsoft Word Document 41
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DOC41
SBGH WW-X0418-Mod4 - 4nec2 File
Elements Swept Forward + 4 Angled Reflector Rods


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SBGH WW-X0418-Mod4 - UHF Raw Gain
Elements Swept Forward + 4 Angled Reflector Rods
UHF Raw Gain = 7-5.5 dBi for 55-deg Azimuth.
Fewer Rods for improved response to
the REAR on Ch44 (650-656 MHz).
It's nearly an OMNI-directional Pattern.


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43
SBGH WW-X0418-Mod4
Elements Swept Forward + 4 Angled Reflector Rods
UHF Raw Gain = 7-5.5 dBi for 55-deg Azimuth.


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44
SBGH WW-X0418-Mod4 - UHF SWR under 3.0
Elements Swept Forward + 4 Angled Reflector Rods


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SBGH WW-X0418-Mod4 - UHF Impedance
Elements Swept Forward + 4 Angled Reflector Rods


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SBGH WW-X0418-Mod0 - 3D View
Elements Swept Forward + NO Reflector Rods


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SBGH WW-X0418-Mod0 - Front View
Elements Swept Forward + NO Reflector Rods


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SBGH WW-X0418-Mod0 - Side View
Elements Swept Forward + NO Reflector Rods


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SBGH WW-X0418-Mod0 - Top View
Elements Swept Forward + NO Reflector Rods


Enlarge Microsoft Word Document 50
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DOC50
SBGH WW-X0418-Mod0 - UHF Impedance
Elements Swept Forward + NO Reflector Rods


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SBGH WW-X0418-Mod0
Elements Swept Forward + NO Angled Reflector Rods
UHF Raw Gain = 6-4 dBi for 270-deg (REARWARD).
Fewer Rods for improved response to
the REAR on Ch44 (650-656 MHz).
It's nearly an OMNI-directional Pattern.


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52
SBGH WW-X0418-Mod0
Elements Swept Forward + NO Reflector Rods
UHF Raw Gain = 6-4 dBi for 270-deg (REARWARD).


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SBGH WW-X0418-Mod0 - UHF SWR(300) under 3.0
Elements Swept Forward + NO Reflector Rods


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SBGH WW-X0418-Mod0 - UHF Impedance
Elements Swept Forward + NO Reflector Rods


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