The mclapp modified bowties are probably the best all around for capturing nearby vhfhi and long distance uhf. The grayhoverman antenna has been designed by doyt r. Since wineaard actually controls the antenna s production, it may not be available from any other source except radio shack, as it is not currently a popular antenna design. The ideal antenna for the job appeared to be a gray hoverman gh, a design from the later 50s early 60s and one resurrected by canadian enthusiasts in the late 2000s around the time of. The gh designers mistakenly applied s, rather than patents, to their ideas thinking they were, somehow, protectingcontrolling those ideas. Has anyone made of these lately and is this truly a good. This all came about to finally obtain offtheair ota signals for our tv. Since the ball had started rolling in constructing antennas previously for my wireless client and the access point, i began to search for a good high gain uhf antenna. I test both antennas on at a time in the same spot, at the same height and in the same direction. Below is a link to the one i built, and it is much simpler than the others i have seen and a lot cheaper to build. Building an antenna for vhf channel 11 and uhf channel 16. Gh10 is a single bay gray hoverman gold standard data from j3d dbgh is a double bay gray hoverman data from 300ohm is for channel 51 antenna not designed for 52 and higher the announcement i made earlier today is about a new variant of the sbgh and dbgh antennas that also get great vhfhi gain. It appears that the frequency can be adjusted by altering all dimensions by the ratio of newold frequency.
In addition to the foam core board and copper tape, youll also need a really cheap balun transformer which you can get at any electronics store, two wood screws or solder to attach it, and a coaxial cable to connect it to. The gray hoverman if built right can do slightly better on some uhf frequencies but will not get any vhfok maybe if you live next to the transmitter if you want to really get serious in antenna building then you can move up to custom built yagis. Gray hoverman antennas original hoverman variations, incl antennacraft g1483 and radioshack 151627, sbgh single bay gray hoverman and dbgh double bay gray hoverman analyzed for hivhf and uhf performance using 4nec2. Mar 14, 2008 the gray hoverman antenna for uhf television reception march, 2008 this project is dedicated to doyt r. The grayhoverman antenna designs, schematics, and diagrams. Build a massive hdtv antenna for long distance gains. Only recently that i had the time to construct an antenna again. Gray designs, schematics, and diagrarrys ore copyr. The model you see here is what results when a little gray hoverman antenna visits the beach, gets washed into a. The grayhoverman antenna has its roots in a design dating back to the late. Hobbyists create diy super tv antenna archive high def. Antenna types antennas can be classified in several ways.
I recently designed and built a homemade antenna for tv reception. Jan 18, 2015 gray hoverman is an easy to build wideband uhf antenna. This is a fix on how to improve the vhf signal with out affecting the uhf tv antenna signal,the antenna presented here are. Hdtv antenna gray hoverman vs fractal bowtie youtube. Many antennas are based on halfwave dipoles fabricated from wire or tubing. Vintage antennacraft g1483 hoverman antenna dtv usa forum. Grayhoverman, the wideband tv antenna diy tv antenna. This is the last of several instructables covering construction of this antenna that receives uhf stations and, optionally, those in the high end of the vhf b. Grayhoverman is an easy to build wideband uhf antenna.
Gray hoverman antenna performance designs, schematics, and diagrams join the digital forum discussion the gray hoverman antenna designs, schematics, and diagrams. Grayhoverman antenna performance designs, schematics, and diagrams join the digital forum discussion the grayhoverman antenna designs, schematics, and diagrams. The gray hoverman antenna final assembly is straightforward once all the parts are made. What follows is a step by step photo shoot of my version of the venerable hoverman uhf tv antenna based on a design from the late 1950s.
Im in a deep fringe area and my channel master 4228 with cm7777 preamp signal is scattered at best especially when the leaves are on the trees. The grayhoverman antenna for uhf television reception. Im curious about why your antenna is wired parallel, i have a pdf of the patent and hh says that it should be connected in series. Gray hoverman antenna ultra high frequency antenna radio. I decided to build the gray hoverman antenna after seeing the published simulation results. Gray hoverman, the wideband tv antenna air tv channels transmit on frequencies ranging from 170 mhz to 860 mhz. In fact, rs used to offer an 8 bay version of this design several years ago, but apparently dropped it in favor of various overpriced yagi designs. The gray hoverman antenna construction for meteor observation. The slightly shorter horizontal section in the zigzag element tips increase the range to cover todays entire uhf television band. Receiving all these frequencies is difficult when using a single antenna. You can read more about the history of this design on their web page.
The gray hoverman antenna is well worth the effort to build. In the past, air tv channels were broadcast on frequencies ranging from 170 mhz to 860 mhz. The vhf dipole antenna at vhf and uhf, most antenna systems are derived from the dipole or its complement, the slot antenna. The hoverman antenna was invented in the 1950s by doyt hoverman. This study is to construct and modifying the grays hoverman antenna to obtain the highest gain thus improved its sensitivity. Cut four coat hangers and remove finish cut apart four wire coat hangers as shown in the diargram below to obain eight vshaped pieces of wire, each side of the v being 8 long with a. I had chosen the gh10n3 version of the gray hoverman.
Jun 15, 2017 gray hoverman and fractal bowtie comparison. The vhfhi band covers 175 to 230 mhz, while uhf covers 470 to 860 mhz. For my practical application, im using two gray hoverman antennas in my attic. I left the standard single bay gh6 gray hoverman antenna at the rented house when i moved out to my new place. Several web pages have sbgh plans, a good example is here. In future, the current gray hovermans antenna can be improved by adding 2 or more antennas which are. I have avoided replicating gh results found elsewhere. Mar 11, 2008 the gray hoverman antenna for uhf television reception march 11, 2008 updated march 22, 2008 corrected sbgh performance plots this project is dedicated to doyt r. Hobbyists create gpled diy super tv antenna slashdot. Nvm will be going with a gray hoverman antenna design. This antenna was used primarily as an experimental to introduce me to the world of ota. I was intending on using this antenna for canadian broadcasts from toronto, but learned that mixing antenna types was not a very good idea. The grayhoverman antenna for uhf television reception march 11, 2008 updated march 22, 2008 corrected sbgh performance plots this project is dedicated to doyt r.
The tradeoff is that the gain of the gray hoverman antenna falls off rapidly at higher channels, and especially above channel 54, where it has less gain than the 4228. This study is to construct and modifying the gray s hoverman antenna to obtain the highest gain thus improved its sensitivity. Feb 21, 2010 since the ball had started rolling in constructing antennas previously for my wireless client and the access point, i began to search for a good high gain uhf antenna. Grayhoverman, the wideband tv antenna one transistor. Jun 30, 2010 the gray hoverman antenna is well worth the effort to build. It looks like a bunch of enthusiasts updated the design for the modern uhf band and renamed it the gray hoverman. Design of the grayhoverman antenna digital home canada. The ideal antenna for the job appeared to be a grayhoverman gh, a design from the later 50s early 60s and one resurrected by canadian enthusiasts in the late 2000s around the time of the digital conversion. There are plenty of antennas you can buy to help boost your signal strength, but few of them are as effective as the gray hoverman antenna. Since wineaard actually controls the antennas production, it may not be available from any other source except radio shack, as it is not currently a popular antenna design. After a while, my attention was immediately focused on a little known, at least to me, gray hoverman antenna. By adding some additional elements called narods you can also receive vhf band. The singlebay gray hoverman antenna definitely is a compromise, trading size against performance to yield a small size that can easily be used indoors or in an attic.
I use the four bar signal meter on my tv to document. Hoverman antennas seems to be in the article pdf the hoverman, vud sept. On several web forums one of the leading contributors to antenna design and computer modelling is a guy from delaware, usa with the user name 300ohm who has done a huge amount of work on the gray hoverman, and i also mentioned j3d, who has also done crucial design work on the gray hoverman antennas on his own free time. Digital tv coat hanger antenna page 3 digital tv coat hanger antenna step 3. Stack two gray hoverman antennas and the model shows better incore uhf performance than the popular channel master 4228 8bay bowtie antenna. The gray hoverman or gh for short is a diy antenna for picking up television broadcasts in the uhf ultra high frequency spectrum. The hoverman antenna was invented in the 1950s by doyt hoverman before the advent of computer modeling, and appears to be a variation for uhf of the much earlier chireixmesny shortwave antenna. The antennas commonly used for lmrboth at base stations and mobile unitsrepresent only a very small portion of all the antenna types. The feed point is usually placed at the centre of the dipole, for although this is not absolutely necessary, it can help prevent.
Grayhoverman antenna materials list cut the following pieces from the lengths of pipe listed above. It is not uncommon for the big tv stations to broadcast overtheair ota for short. The one i built 2 years ago broke in 12 this winter and has been flopping around for. The time and effort needed to make the jig will pay off in the. The idea behind this antenna is to replace my existing channel master 4bay antenna cm4221. Mar 05, 2015 the original hoverman patent antenna dimensions provide coverage of only part of the uhf band. This jig makes it easy to form the zigzag active elements needed for every version of the gray hoverman tv antenna, using prepared links of common quarterinch diameter copper tubing. Please note that fringe television reception is very tricky. John e davis has several antennas based on gray hoverman.
The grayhoverman or gh for short is a diy antenna for picking up television broadcasts in the uhf ultra high frequency spectrum. Use the gray hoverman plans any way you wish as the gray hoverman antenna designs are in the public domain thanks to the lack of a patent. Jan 07, 2017 in this video and i show you how to make the gray hoverman narods top hat. I only dare writing this title after try to search 3 times, and found no post about making gray hoverman super antenna from indonesia.
Mar 24, 2016 first tv super antenna gray hoverman in indonesia. Hoverman in 1959, the device is called a super antenna because it greatly increases the range and number of channels you can pick up. Others include physical structure and electricalelectromagnetic design. The tradeoff is that the gain of the gray hoverman antenna falls off rapidly at higher channels, and especially above channel 54. Part id description quantity 12 pvc pipe, schedule 40, 10foot lengths 3 a 12 pvc caps 18 b 12 pvc tees 32 c 12 pvc cross 6 pvc primer clear 12 pint 1. In late 2007 and through much of 2008 the hoverman antenna was subjected to computer modeling and a number of improvements were made by a small group of antenna enthusiasts on the digitalhome. Hoverman and was invented in the 1950s and it was patented in 1960s. Freshly exhumed writes retired and hobbyist antenna engineers working together in the digital home forums have taken an obscure 1950s uhf tv antenna called the hoverman pdf and subjected the design to modern softwarebased computer modeling in hopes of optimizing its middling performance. Nov 26, 2017 the designs presented on this page are hoverman style hdtv antennas that utilize a gapless reflector making them easier to build than my revison2 designs. The gray hoverman design is based on the hoverman patents but we are waaaaay past that into a range of performance that beats any comparable commercial antenna the sbgh smokes the cm4221, the dbgh smokes the cm4228 and any other diy antenna project of similar requirements. Please see the digital home forum resources listed below if you would like more information. Grayhoverman antennas original hoverman variations, incl antennacraft g1483 and radioshack 151627, sbgh single bay gray hoverman and dbgh double bay gray hoverman analyzed for hivhf and uhf performance using 4nec2.
The original hoverman patent antenna dimensions provide coverage of only part of the uhf band. The reasons were better gain and its dual band nature, uhf and vhf band iii. Thanks goes to the canadian nec geeks for figuring this out. Half wave dipole tv antenna, impedance and gray hoverman. Compared with my previous antenna, i found that channel 31 from philadelphia came in with a noticably stronger signal. There is nothing wrong with the channel master antenna, mainly im just curious if i can construct a better antenna. The antenna offers sufficient gain for dvbt, dvbt2, isdbt and atsc reception. It does look like the one in the picture is over engineered, but it would last for years if erected outdoors. The gray hoverman antenna has been designed by doyt r. Aug 07, 20 i left the standard single bay gh6 gray hoverman antenna at the rented house when i moved out to my new place. Jan 22, 2015 i recently designed and built a homemade antenna for tv reception. The designs presented on this page are hoverman style hdtv antennas that utilize a gapless reflector making them easier to build than my revison2 designs. Some sources say they have had better success using a gray hoverman homemade antenna.
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