Introduction to the Gray-Hoverman TV Antenna - Page 3 - Canadian TV, Computing and Home Theatre Forums

View Poll Results: I built/will build a Gray Hoverman antenna and I am:
a tinkerer who wants the best OTA TV reception 147 65.04%
an experienced TV antenna hobbyist 13 5.75%
an electronics technician/engineer/designer/repair person 39 17.26%
an RF technician/engineer/designer 3 1.33%
a Broadcast technician/engineer/designer 3 1.33%
a HAM radio enthusiast 21 9.29%
a Home Theatre enthusiast 35 15.49%
a high technology enthusiast 39 17.26%
a computer hardware/software enthusiast 64 28.32%
a technology student 3 1.33%
new to OTA TV 44 19.47%
broke, you insensitive clod... I needed a free antenna! 46 20.35%
Multiple Choice Poll. Voters: 226. You may not vote on this poll

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post #31 of 69 (permalink) Old 2009-06-10, 12:56 PM
Join Date: Feb 2006
Location: St. Catharines
Posts: 177
I adjusted the contrast/brightness and scaled it up a bit. That should make it easier if anyone else has difficulty reading the original...

Andicus is offline  
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post #32 of 69 (permalink) Old 2012-07-03, 04:03 PM
Join Date: Jul 2012
Posts: 1
Thumbs up Big Thank You

Nothing new here, nor any questions - just a big thanks to everyone involved in posting the Gray-Hoverman design and building tips. With the change to exclusively UHF my old Radio Shack log-periodic wasn't cutting it anymore and I am not really interested in paying by the month for the same old stuff.

I went with a Gen 1 for its simplicity and double bay for the better gain. I used 1" PVC for the frame, 1" chicken wire for a split reflector, 10 Ga copper for the driven elements and 14 Ga copper for the phasing leads. CBC has the weakest signal here and I went from no signal to pegged on both strength and quality.

Now my wife wants to know if I can build an antenna that improves the programming.
Scubanero is offline  
post #33 of 69 (permalink) Old 2014-05-20, 02:30 PM
Join Date: Dec 2008
Location: mississauga, ON
Posts: 1,243
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post #34 of 69 (permalink) Old 2014-05-20, 04:52 PM
Join Date: Nov 2008
Location: San Diego, CA
Posts: 3,395
For even more DIY G-H examples, see list found here:

Antenna Simulations, Overload Calculations, etc:
holl_ands is offline  
post #35 of 69 (permalink) Old 2014-05-20, 05:38 PM
Join Date: Nov 2008
Location: San Diego, CA
Posts: 3,395
Image posting website doesn't EASILY allow it....I would have to post it as a downloadable *.html or *.doc file...
BUT SURE..."only" takes a couple dozen copy/paste actions to embed it here:

I have avoided replicating G-H results found elsewhere. Much more info can be found here: [Grey-Hoverman] [Grey-Hoverman] [nikiml's Optimized Grey-Hoverman & Stealthawk] [Grey-Hoverman] [Hi-VHF & UHF Grey-Hoverman]

Some DIY websites: [300-ohm's DIY G-H thread] [UHF SBGH-6 + Hi-VHF NARODS] [Mayhem Creation's DIY G-H] [Chris Dahl's DIY G-H] [unclesam's DIY G-H] [DBGH by JHEngineering for WSYR] [Wm F Dudley Jr's DIY Stacked DBGH] [Even kidz can do it.....]

Antenna Simulations, Overload Calculations, etc:
holl_ands is offline  
post #36 of 69 (permalink) Old 2014-09-07, 03:43 AM Thread Starter
OTA Forum Moderator
Join Date: Jan 2005
Posts: 24,878
Thumbs up New Optimizations to DBGH Models - Sept. 2014

The performance of DBGH variants has been tweaked and optimized even further thanks to nikiml, as seen in the following thread:

Optimized DBGH models for UHF

stampeder is offline  
post #37 of 69 (permalink) Old 2016-03-08, 04:26 PM
Join Date: Mar 2016
Posts: 1
Newbie Builder

Hello, I'm relatively new to antenna building however I'm learning by trial and error..i have built 3 Hoverman antennas and all work great. My first was a 2 bay with aluminum foil reflector that works great in the attic 25 feet above ground , my second is a single Hover w hardware cloth reflector mounted near chimney 30 feet up outside..that one works great, I'm picking up Daystar channel which is a 2 edge 40 miles away..and my 3rd is another single that is a "mobile" antenna I take when I visit my brother in Syracuse Ny..I tried various sized bow tie builds and suffered through some commercial yaggis that just were horrible..I believe the Hovers are the best yet I've tried..thanks I enjoy reading on your site here..
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post #38 of 69 (permalink) Old 2016-06-10, 10:33 PM
Join Date: May 2016
Location: Memphis Tennessee USA
Posts: 1
Hello! Long time lurker. First time poster.

I just wanted to pop in and thank all the fine folks here for all your help.
With the children more and more into their laptops, iPhones, and iPads, I've finally gotten around to cutting cable and going with an OTA set up supplemented with occasional online streaming. I've read all the helpful info you fine folks have shared and completed my first single bay GH antenna.
I average about 14 miles from the local transmitters. All are basically along the same path. My initial tests were promising prior to building the GH for all local channels with the exception of a low VHF channel (CH5). I finally had CH5 licked with a homemade single channel dipole I made and planned to use the dipole with a VHF/UHF signal combiner. With the channel 5 issue solved, I made up the GH6 using honeycomb panels that ended up making the antenna a large flat box. Active elements on the front side, the NARODs on the back side. I modified the top and bottom NAROD's from the straight rods to the top hat style. I used 9 gauge dead soft aluminum wire and a quality balun. Once finished, I placed it in the attic and hooked it up to one TV. I was amazed at the clarity and especially the signal strengths. 41 channels received with 24 that I kept. Each channel was at 95% or more and the problematic CH5 was coming in at 80-85% signal strength, the same as the my dipole I made. I ended up leaving the dipole off as it wasn't needed. The GH now feeds 5 TVs with only minor grumbles from the kids who miss their favorite cable channel.

Thanks again! Ya'll have a fine group here!
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post #39 of 69 (permalink) Old 2017-01-08, 02:59 PM
Join Date: Jan 2017
Posts: 1
Red face dbgh horizontal vs vertical orientation

how would the dbgh perform in a horizontal configuration as oppesed to the vertical.
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post #40 of 69 (permalink) Old 2017-01-08, 03:52 PM
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Join Date: May 2010
Location: S.E. VA
Posts: 1,017
Welcome, banditdog

If you mean like this:

then the gain would be about the same but the beamwidths would be different.

With the vertical arrangement, the DBGH has the same horizontal beamwidth as the SBGH, but the vertical beamwidth is more narrow.

With the side-by-side arrangement, the vertical beamwidth is the same as the SBGH, but the horizontal beamwidth is reduced.

Why do you think you need to change the arrangement?

The Antennacraft Double-SuperG-1483 Gray-Hoverman Antenna does both with 4 SBGHs. You can see how the main lobe is more narrow and there two minor lobes, one on each side. This is the result of the side-by-side arrangement, and is seen not only with GH antennas but also bowtie antennas like the CM 4228 and the AD DB8e.

If you can not measure it, you can not improve it.
Lord Kelvin, 1883

Last edited by rabbit73; 2017-01-08 at 07:31 PM.
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post #41 of 69 (permalink) Old 2017-04-26, 09:36 AM
Join Date: Apr 2017
Location: Randolph NJ 30 miles west of ESB/1WTC
Posts: 79
On another subject. Has anyone looked into a possible tweak of the GH design to improve reception for the UHF spectrum repack in the US and I think Canada too?
lenlab is offline  
post #42 of 69 (permalink) Old 2017-05-27, 01:46 AM
Join Date: Mar 2017
Location: Near Boston, MA
Posts: 8
I have.and will go with the original hoverman figure 2. This one is designed for channels 14-35.

e will also put a screen in back of antenna and should produce a 2 db increase. After I build it I' let you know how it performs.
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post #43 of 69 (permalink) Old 2017-06-02, 11:52 PM
Join Date: Mar 2017
Location: Near Boston, MA
Posts: 8
All antenna manufacturers will have to redesign their antennas to meet the new uhf band. channels 14-35. 470 mgh to 600 mgh.
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post #44 of 69 (permalink) Old 2017-06-03, 03:17 PM
Join Date: Apr 2017
Location: Randolph NJ 30 miles west of ESB/1WTC
Posts: 79
Thanks! Can't wait to see what you did and the results. I have built a couple of GH's but right now they are in the shed waiting for me to tinker with them again.

I suspect all of the antenna makers are going to promote new antennas in the coming days for better lower UHF.
lenlab is offline  
post #45 of 69 (permalink) Old 2017-06-04, 05:46 PM
Join Date: Mar 2017
Location: Near Boston, MA
Posts: 8
The antenna I have designed will get a 12dbi to 14 dbi. From channels 14-35 on the new uhf band.
ka1yuw is offline  

antenna , atsc , dbgh , diy hdtv antenna (gh-1) , gray-hoverman , ota , poll , sbgh

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