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 holl_ands | Home > Gray-Hoverman Antennas > 
Hoverman Type 2 w 4 RRs - Radio Shack
Radio-Shack "4-Bay" "Spike" variation of Hoverman Type 2 with 4 Reflector Rods analyzed using 4nec2,
as depicted in R-S 1971 Catalog: http://www.radioshackcatalogs.com/html/1971-c/h292.html
Dimensions per alwjoplinmo and EscapeVelocity, 4nec2 by alwjoplinmo, with AWG10 Elements and 3/8" O.D. RR's.

Original Hoverman Patent US3148371, dated 8Sep1964, for the Type 2 (adds 4 SPLIT Reflector Rod Pairs)
does NOT have the short "Spikes" at the ends of the outer whiskers and at the center Feedpoints:
http://www.freepatentsonline.com/3148371.pdf

All 45-deg Zig-Zag Lengths L=7.0-in, except Top & Bottom are 6.4-in plus 1.0-in Vertical Spur at Ends.
Vertical Spurs at Top & Bottom are unique to R-S versions, Length=5.1-in.

PS: For my version (see "HOVERMOON" photo below), I measure L=7.0-in with 6.5-in plus
1.25-in Vertical Spurs at Ends...and 5.25-in Vertical Spurs....a nearly negligible difference.
Note that the Spurs on the Ends actually turns back AROUND.

EDIT (5Mar2017): Added Hi-VHF Performance Charts.
Date(s): 4 Apr 2013. Album by holl_ands. 1 - 21 of 21 Total. 6354 Visits.
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R-S Catalog Hoverman Type 2 - 4 Refl Rods
3D View


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Front View
[1 large box = 2.5 inches]


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Side View
[1 large box = 2.5 inches]


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
UHF Raw Gain Drops above 698 MHz.
F/B & F/R Ratios are Poor for most of Band.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
UHF SWR (300-ohms) Excessive 7.2 at 698 MHz.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
UHF Impedance


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 470 MHz
Very Poor F/B and F/R Ratios.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 530 MHz
Poor F/B & F/R Ratios.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 590 MHz


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 650 MHz


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 698 MHz
Poor F/B & F/R Ratios.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 806 MHz
Very Poor F/B & F/R Ratios.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Hi-VHF Raw Gain = 1.2 to -0.3 dBi to REAR
More Gain to REAR than FORWARD.


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Hi-VHF SWR (300-ohms) = 94 to 164 isi Excessive


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Hi-VHF Impedance


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 174 MHz


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 198 MHz


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Azimuthal Pattern at 216 MHz


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R-S Catalog Hoverman Type 2 - 4 Refl Rods
Top View
[1 large box = 2.5 inches]


Enlarge Microsoft Word Document 20
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DOC20
R-S Catalog Hoverman Type 2 - 4 Refl Rods
4nec2 File


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"HoverMoon"
Radio-Shack "Spike & Hook" Hoverman Type 2
Some of the lower Elements have broken off


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