Gray Hoverman VHF Fix
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- Опубліковано 26 сер 2024
- In this video and I show you how to make the Gray Hoverman Narods Top Hat.This is a fix on how to improve the VHF signal with out affecting the UHF TV antenna signal,The antenna presented here are of Gray-Hoverman type. They are designed to have very high UHF gain combined with good to excellent VHF-hi performance In the VHF-hi band the performance depends on the number of NAROD reflectors and ranges from 1-2 dB less on some models to 1-2 dB more on others. The model without reflectors have the least VHF-hi gain, but they only have a single reflector plane and should be much easier to build. All models cover the whole US and Canada post-transition TV spectrum, one should choose the model to build based on the specific gain, and pattern requirements. The models with more reflectors have more gain but narrower beam width. The Gray-Hoverman antenna has been designed by Doyt R. Hoverman and it was patented in the sixties. His design only covered a part of UHF band. However, with some improvements, the antenna can receive well both the UHF as well as VHF-Hi. This post will show two variants of this antenna that can be used to receive 170 to 230 MHz channels (5 - 12) and a part of UHF between 470 - 720 MHz (21 - 52 channels) with a minimum gain of 5 - 6 dBi. These are the simplest to build. There are however designs that offer a minimum gain of 8 dBi on VHF and 10 dBi on UHF (check the Links section). These antennas can be used for any kind of signal that can be received on the mentioned frequencies: analog TV, DVB-T, DVB-T2, ISDB-T, ATSC. The design is distributed according to the GNU GPL version 3 license.
YOU WANT TO SEE MORE. I HAVE 3 CHANNELS..Deep South Videos ua-cam.com/channels/u7D3nWG9a5prTg9ugIn41g.html
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Why do you not answer you comments Danny ?? I GOTS TO KNOW !!!!!!
HOW DO YOU BUILD A CHEAP REFLECTOR AND NOT BUY A ROLL OF WIRE ??
Hi Danny. I'm a big fan. I was really pleased to see this video and the one before it.
The word "NAROD" is an acronym for Not A Reflector Or Director. The NAROD Hats are their own individual 1/2 wave dipole antennas tuned for VHF. That's why they have to be 30" long. How do they transmit their signal to the rest of the Gray Hoverman antenna? It's not through a direct connection and it's not through capacitance. They transmit their signal through electromagnetic induction.
When a wire receives an over-the-air TV signal, the wire experiences electrical current flow. The OTA TV signal is generated with AC electricity and therefore has peaks and troughs just like the electricity from the AC outlets in your house. When the OTA signal goes from peak to trough, the electricity in the wire flows in one direction. When the OTA signal goes from trough to peak the electricity flows in the opposite direction. The time it takes for two adjacent peaks to pass the same point determines the radio frequency - i.e. 200 MHz for VHF and 600 MHz for UHF. The frequency determines the TV channel number.
When electricity flows through a wire, it creates an electromagnetic field around the wire. When the electricity flows in the opposite direction the magnetic field reverses polarity. This back and forth of the magnetic field causes the wire to radiate its own radio frequency which can be picked up by an adjacent wire which starts the whole thing all over again. This is how the NAROD hats are transmitting the VHF signal to the adjacent wire of the Gray Hoverman antenna.
I hope that helps. Keep up the great videos.
hey a big tks for that
i have a technician class license (or whatever they call it now) and reading this one comment gave me a better understanding of the topics mentioned.
Excellent explanation, Roger.
Actually there is both capacitance and inductance involved. The combination forms a tuned circuit. Spacing in the gap between conductors affects both values and performance of the antenna as well.
You said it! I remember when 300 ohm twin lead was used especially the almost clear kind if you wanted to add another tv to the antenna all you needed to do is place another twin lead over the main lead and tape them together the signal went through the insulation and did not need to strip the wires to make the connection. Vhf has longer wave lengths than uhf so it worked fine without a direct connection. I never tried it with uhf because I did not have a outside uhf antenna.
Danny, I just built your "improved Gray Hoverman" on your ultimate antenna PVC backbone and it did an incredible job for me. Because I am surrounded by trees, I used the RCA amp that you recommended. I am receiving the best TV signal I've ever had.
It's a pleasure watching someone work who knows what he's doing and loves doing it.
Thanks!
1 1/2" PVC, 8 ga copper wire, 1/4" squares wire fencing (you can buy it 36" X 17' rolls, makes three reflectors). Since my original posting I have removed the RF amplifier which actually improved my signal.
Damn it Sam. I am that guy that always has to try and find why something will not work. Well I couldn't do it on this I get the same 19 channels i used to get on my $150.00 commercial antenna. Thanks Danny. Now as a ham radio operator I don't have a clue as to why I was skeptical I talk all over the world on 100 watts and a wire. SO this had to work just had to prove it to myself
I used 1/4" nylon bolts, washers, and nuts to separate the hat. Works great!
Thanks Danny. I just made this and went from 12 channels to 35. I made the top and bottom hats with straight elements.
Danny, just installed the gray hoverman you showed me how to build . Went from 88 channels to 103 THANK YOU!! GREAT VIDIOS!!!
Danny, just want to thank you.I made this antenna the Gray Hoverman using some metric measurements i found on the internet. I had it set temp for testing 10ft off the ground. I could not believe how amazing it worked. I went from getting 22 channels to 47 channels. Some of them about 70 miles away with full bars on the meter. works great if you want ill send you some pictures. I used PVC trim that i got at a big box store.
Danny would making two more top hats make the signal stronger ??? Worth some attention fella. Nice work too.
The good thing about the Gray Hoverman Antenna is that it can be designed to target certain channel ranges, even a certain channel itself.
FYI the plastic material you refer to on this is made for a exterior electrical conduit raceway, can be purchased in any hardware store. I was a commercial electrician for many years and would use this in office area's.
Ahoy Dr Hodges! (hope you don't mind me calling you that-a fella used that title in comments on this video-my sister jokingly calls me "Dr Doty" (my last name) because I fix/repair her cars/TV's/appliances/etc.
Anyways-I built an antenna using your guidance videos with the intent to use at my home in Liberty, GA. I was having trouble receiving PBS TV. I somehow got diverted to trying out idea of using a dual antenna system-pointing one in direction to Wrens,GA to get PBS from there and second one pointing to Macon, GA for other channels. Amazingly it worked!! I found this idea on a fella's UA-cam channel-it's called "Doug's Basement". The antennas are wired together using a 2 port signal splitter in reverse order (antennas connected to each of the 2 output ports and the combined signals sent from the one "input" port to the TV. I used 2 regular Channel Master antennas mounted on the same pole-one at top of pole the other approx 3 feet below. Doug says it's important to have a minimum distance of 2 feet between the two antennas and that the length of cables attached between antennas to the splitter be exactly the same.
I am now installing the Gray Hoverman antenna I built at my sister's house in Florida. I have discovered we are not receiving a much desired PBS channel here. I had not added on the "top hat" wires and that is why I'm back here to see how to do that. (Hope it works!)
I drive through Dublin, GA on my road trips to Florida on Hwy 441- thought it be cool to stop by and visit ya!
Enjoy your videos! Happy holidays to you, Dr Hodges and family!
Bourn, I find your reply very interesting. I did a search on UA-cam for "Doug's Basement" but could not find any info on antennas. If you have a link or another way I can locate this video please post.
Thanks RG
Hi Danny. Built my Grey-Hoverman to your specifications and it works wonders. I was not picking up our CTV Ch 12 [VHF 204MHZ], so I custom cut two straight NARODS [top & bottom hats] to a 1/2 wavelength for 204mhz which is 27.5"/70cm and it again works great. Thanx for your highly entertaining and informative videos mate.
cheers, from Spruce Grove, Alberta - Canada.
thank you for your commet
Hello Ole, How do you figure out how long you need the NAROD at different mhz?
@@danaharris503 if you know the wavelength of a frequency you cut that in half. That is your half wave. It is the distance from Peak to Peak an RF transmission. CB frequency wavelength 36 ft quarter wave antenna is 9 ft that's why they had that 9 foot steel whips on vehicles
Hey Danny! Built my Hoverman with the hats using #6 awg copper. Found a roll of galvanized hardware cloth at Home Depot for $6.98. 1/2" square mesh works well for this antenna. It has no trouble picking up 23 digital channels just sitting on a stand when testing. Will be putting it in the attic for its final mounting spot. I have less than $30.00 in it and should do quite well for my purposes. Thanks again for the video!
HEY THATS ALLRIGHT
You're welcome for the NAROD idea. They are capacitivly coupled antenna elements, not reflectors or directors. The screen behind your antenna elements is the reflector...
If you're going to make a lot of these, you might want to make up some sort of wire bending jig.
Keep up the good work!
ok brother tks for the people...I SEEN THAT YOUR THE ONE THAT SENT ME THE LINK TKS BROTHER
Richard how does the element work not being connected? That is why it is mistaken, if so, for a director or reflector......but it obviously works.
Scientific Answer: The NARODs are capacitively coupled to the existing elements. VHF TV signals induce an alternating current in the NARODs. Some of this alternating current is transferred to the existing elements because the parallel sections of the wire act like capacitors.
Non-Scientific Answer: PFM (Pure Freaking Magic).
Richard, the hat acting as a capacitor or capacitivly coupled antennaelement is an interesting idea. Do you have any more informationabout the capacitor coupling with antennas. thanks for sharing. rob,
OK TKS
Thanks, Danny! I just finished building one like you are showing. I didn't want to spend much, so I made it on 3/4" PVC, and mounted it on a 10' x 1 1/4" PVC pipe for a mast. I took down my Dish TV antenna and slid the mast into the hollow mount - a perfect fit! That put the antenna just above the roof line. All the info I found showed I'd probably get about 6-8 channels. I get 99 channels perfect using your measurements! I have a "PCT multimedia drop amplifier" in my main panel inside my home - BEFORE the splitter that goes to 6 rooms. I'm in the Inland Empire in Southern California, so I didn't have much hope for reception. But, thanks to your help, I'm cable free.
Something you may want to consider doing instead of using the electrical tape: maybe if you just put some heat shrink tubing on the copper and shrink it, then just use the screw in the center, and it may be enough for it to be about a 1/4 of an inch between the two copper wires. I think I may try that myself. Great build and tutorial, thanks!
I built a double bay gray-hoverman (DBGH) tuned for RF channel 39, (WSB in Atlanta virtual ch 2), and it topped out with a gain greater than 20 dBi.
I could find the weakest analog uhf station with a 3dB loop antenna, I mean so weak you could barely see anything through the snow, and then hook up the DBGH to the TV and the picture was perfect! No snow at all.
Best damn uhf antenna ever in my opinion!
Danny, I have degrees in Chemistry and a Masters in Mechanical Engineering, and I can tell you you are a true Scientist!
lol
Worked great with the vhf fix I was getting 7 channels and now 15 channels thx
Hey Danny I'm building the Gray Hoverman right now with the hats wish me luck. I'll let you know how it turns out. Thanks for all your help!
The element that you have in question that is suppose to improve the upper vhf channel reception does not need to be physically ( electrically) connected to the rest of the antenna. It works on the same principal of the yagi antenna. when the yagi antenna is designed to work with the elements not electrically connected to the antenna, each element of the yagi antenna increases the signal strength going to the driven element of the antenna. Just wonder why this element that we are talking about was not divided in half as an driven element of a yagi antenna would normally be? I think it would work much better than the solid element that was used.
:)
I have an idea Danny. How about you make a double hat on each end of the antenna. Just maybe the 27 number on the power meter will improve for you ?? Cannot hurt to try fella.
Danny I am sure that you are not making any of this up !! I reside in western ,KY you are awesome and honest
AW MAN THE STUFF I SAY IS 100 PERCENT TRUE..SOMBODY SAID I WAS LIEING....I AINT THE LIEING KIND...MY DADDY WAS A PROFESSIONAL POKER NOT LIKE ON TV..HE JUST MADE HIS LIVING PLAYING POKER...NOT BIG TIME..JUST A LIVING..AND HE SHOWED ME... HE DONE THAT FOR 30 YEARS HE WAS THE HOUSE MAN..WHEN HE DIED I WAS THE HOUSE MAN....AND I HAD SO MUCH COMMON SENSE AND GOOD JUDGEMENT....I WAS HELL...THE PLAYERS DIDNT LIKE FOR ME TO PLAY..
Danny, get a piece of plastic and drill 2 small holes 1/4" inch apart , slide the 2 pieces of wire in place, then screw it down, much easier and more professional looking than tape.
GhettoRanger give u a cookie
@@timnorton2053 - Can I get a cookie too?
@
GhettoRanger - 100%
@
GhettoRanger - It's a Poo-fessional, does that count? 😂😂😂😂😂😂😂
@@JodBronson I think Danny enjoys what he does and takes pride in his work which is the only reason I offered a suggestion, I used to build robotic assembly lines for the big 3 and in doing so I learned a few things, a few procedures that most people don't get to see. Danny does good work but I saw something I felt could be done better and more durable in weather, that's all.
I just built one of these. I went from about 35-40 channels to almost 65! I use a Winegard amp too. I didn’t use a reflector, though. Thanks!
I got a reflector and am now over 70! I even got a station from 60+ miles away. My VHF actually works better when one hat touches the antenna.
@@5roundsrapid263 - Wow, great improvements!
Isn't inductive coupling finer than frog hair split four ways? The "ghost connection!" You can also use S bends in the NAROD's to shorten em if ya'ownto.
Making my first Gray-Hoverman. I'm also going to add the top hats. I have one VHF channel 13. I ended up making my reflector from a dog cage I got for free.
Fine job Danny! I'm like you, I would have bet the farm that those wire hats were for quacks lol. I gave the hoverman a try over the Christmas weekend and its working good. I just purchased more material to make another one to double them up. I will definitely give the hat reflector thingies a try tomorrow. Appreciate all that you do my boy!
TKS BROTHER .SEE I WASNT PREPARED TO FOR ALL I DONE ..I WAS GOING TO BUST THE MYTH AND HAVE A SHORT VIDEO...JUST FOR EVERYBODY TO NO..
And Helen is doing a great job with her channel and videos thanks to youxxxxx
Hello Danny, I guess I was a little slow but now I understand about the distance of reception and really hope maybe to get a few channels, if I could somehow boost it a little for 80 miles instead of 60 I could I know pick up more than 3 or 4 channels, but yes I do enjoy your videos and have just subscribed, and a big old Thanks for sharing your priceless wisdom Johnny b.
man you the antinna man . I been watching your videos for 2 hours . got me wanting to make on . gonna be searching for some materials. comming from Nowhere , Oklahoma !!
TKS
I added them to my lower only on my double hoverman. Big difference on the vhf. But not enough. I am going to add it to the upper one also.
Which antenna performed better for you fella ??? Thanks
Yeah Danny are you do is keep in mind that millimeters metric system there's 25.4 mm to 1 in
Thanks Danny for the video I am going to build Gray-Hoverman now.
I am interested in your other reflector to see witch works the best.
To add the hats, instead of where you put tape and a screw. Drill a 1/4" hole all the way through and use 4 wire ties.
Thanks Dr. Hodges The Grey Hoverman I built is doing fine I put it in the window now Im getting 47 Channel some 50 miles away from Memphis TN Im going to do the add on then Im going to build a Ultimate antenna just for kicks. waiting on the video on how to make a easy reflector I just bought a roll of wire......Waiting on the video
YOU CAN COUNT ON THAT REFLECTOR VIDEO..I NEEDED TO DO THIS ONE FIRST....MAN I STARTED TO CALL YOU AND TELL U TO LOOK AT THIS VIDEO.
Hi Danny,
I guess the other guys outlined the principle of "NARODS".
Like you I couldn't comprehend how those horizontal top hats could possibly work not being connected to the two vertical elements, but they DO !
Listening to you talk about that, it dawned on me; reflectors aren't directly connected either; but they work too.
I had the dimensions for the top hats written down for a long time, I even made them up at one point; before ever getting around to actually installing them on my "GH" sometime later.
A "Cheap Trick" for good reflectors are the wire cookie cooling racks from the , "Everything is a $" type stores. They come in pairs for a Buck. It requires two pair. They have rounded corner frames and N0 sharp wires protruding to poke or snag things. They also appear very professional and commercially made on the Antenna.
Do you have the dimensions for the alternative NAROD's on the antenna diagram on the left hand side ?
Keep up the good work.
i do i have to look for them
Danny, if the new cross member braces are made out of metal, they may interfere with VHF reception. You might be better off with just using the new pieces at the top and bottom that connect to the center of the NARODs.
cool video danny
Danny, you're a real engineer....
Danny, I had built your Ultimate Antenna and was happy to get 33 channels. After I saw this antenna, I built one with the hats on it and now have 44 channels (No signal booster, just the antenna) ! Man this is great - THANK YOU !!!
Question; I know you do alot of testing, did you try putting those hats on the Ultimate antenna, I just wonder if it would help on it or not ?
i didnt .tks
OK Thanks
This is where understanding how the vhf signal travels though the air. By installing the deflector your adding 3db to the vhf section effectively doubling signal strength.
The other thing I'd like you to not there is no seperate balun for vhf vs uhf and a.combiner. it simply isn't necessary as the dimensions of each wisker is cut to only receive the new HD reduced uhf band. So there is no interference as the vhf elements are cut for a compleyely
different MHz.
Do you not understand the principle of parastatic elements ? Or AC RF impedance ?
@Matt Miller N8QZH
- Hmmmm, 8+ Months = No Answer.... That should tell you something!
He must not be as smart as you..... sorry I meant a smart -ass like you.
@@pine6163 - YES, we SMART-ASSES 100%... YOU + HIM are just DUMB-ASSES! Hahahahahahahahaha, 😂😂😂😂😂😂😂
I noticed you did not explain it either.....
Can you use brass brazing rod for the whiskers?
Does the size of the reflector screen have any effect on the NAROD hats?
I want to build one of these with NARODs and a reflector screen, but I want to make sure I use an optimal screen size.
@HunterZBNS
- During my Testing with BIG and SMALL Reflectors... To be honest, it doesn't make a difference. The only thing is that the Reflector needs to be 4" Inches away and that was very important!
QUESTION ANYBODY...Does the Gray HOVERMAN have to be grounded to work properly...or is grounding to a ground rod in the ground for safety A.E. lightning...?
Can I use 6 gauge copper wire for this and for the ultimate antenna or 8 would be better? Please let me know. Thank you
Danny, how far away are you from WMAZ channel 13?
Danny, I noticed you do all your testing in the evening. Have you tested in the morning or afternoon hours when atmospheric conditions are less favorable? I find I can receive all available channels but during the daytime they vary wildly in signal with pixelation quite frequently. Sometimes I lose signals completely. Some days are perfect but most vary. I'm 68 miles from all tower that are only 2 to 3 degrees apart. I also have a pre amp hooked up. Tried with pre amp and without. Little difference. Is there any way to minimize this during the day? I suspect there is a lot of multi-path signal. Antenna is up about 16' . Is this just something everybody puts up with at these distances or would and 8 bay antenna help?
zip ties held the small reflector. typo...... on the questions about the additional elements, it is not a director it would have to be a reflector. for instance on a satellite antenna there is positive and negative in the lnb the reflector is passive in regards to the coax. there will be no continuity between the shield or the center conductor just like the modification that you did so I would go with reflector.
Hey Danny, how many inches from the reflector are the antenna elements? Thanks! :)
Hey Danny im gonna build this antenna can i use 12 gauge galvanized wire. You da man!!! Thanks for all your videos.
Great video i enjoyed watching
tks
Do the hats short out in snow or ice?
nice Antenna
iv`e just subscribed because your lovely mother told us about youxxx
hi Danny good videos .
what is the best antenna long range ? im living on nj im make one antenna like u should on u videos but only take 7 channels im happy with that .im interest and make one. long range antenna if u have one video for im can watch how to make thanks .
The vhf wire is cap or ind coupled u can make a vhf beam of sorts jg
Ok so i built this and it works perfect
But why is it that sometimes i get 10 channels and some times over 50 and i have the position set perfect and its wired down good
Not moving at all
Go to TV Fools.Com and see what the stations are in your area. If you're getting more than that it is what it's called tropospheric ducting. AKA propagation or skip. Troppo is normaly at night . It only works at night and under certain atmospheric conditions.
@@weswalker1208 - Good Tips
you should use non metallic screws. They make plastic screws. The screws being conductive will mess with the 1/4" gap.
The conductive screws cover so little of the full length that it doesn't impact the performance much. Plastic screws are not very strong. A smaller diameter nut and bolt could work though. He could drill right through the beam he is attaching the rods to and place a nut and washer the far side.
Where can I get the plans?
it is very interesting you are working on this modification because I had just been testing a similar thing. what I noticed was that a reflector on the bottom was better than a reflector top and bottom... So after seeing your video buy put my small reflector half inch hardware cloth the whip of the hoverman and about 8 inches tall tied to the bottom two elements with zip ties did increase signal on some channels not across the band. from + 85 - a 95.. I was sort of curious if you put the Hat on the bottom and not on the top what would it do to your test? also I believe - reduce the signal Level under 27 so you can truly see and increase is to skew off the transmitter and dropped the signal a little bit then try the test for example hoverman in the ultimate antenna..
U SEEN WHAT I SEEN. I MIGHT DO A FOLLOW UP ON THIS.PEOPLE DONT CARE ABOUT LITTLE DETAILS...THEY WANNA NO IF IT WORKS ARE NOT. THAT VHF STATION HAS 500.000 KILLAWATTS. THAT UHF 24 HAS A MILLION KILLA...THAT CHANNEL 24 BLOWS THAT CHANNEL 13 AWAY ALL THE TIME. I NEVER SEEN 13 BEAT 24 IN MY LIFE...I SEE THIS ALL THE TIME....ALL MY RESEARCH NEVER SHOWED USING 1 HAT...I AM GOING TO TEST A STRAIGHT PEICE LIKE WAS IN THE PICTURES...I GOT OTHER VIDEOS MORE IMPORTANT THAT I NEED TO SHOW. IF I DIDNT BELIVE IN THAT HIGH HAT YOU WOULD HAVE SEEN A 4 MINUTE VIDEO..WITH THE TITLE HOVER GREY VHF HI HAT MYTH BUSTED...I DID NOT THINK IT WAS GOING TO DO NOTHING..IM A STRAIGHT UP GUY IM NOT HERE TO BULLSHIT PEOPLE...IM HERE TO HELP...THATS WHY I SALE THEM SO CHEAP....YOU JUST DONT NO HOW MANY HOURS I SPENT OUT THERE TESTING...NOW U COME TO GA WE WILL DO SOME TESTING..IM GOING TO GIVE THE PEOPLE WHAT THEY WANT...NO BULL JUST STRAIGHT TALK
im sorry no shipping ups out of sight
i would try first u may not need it
I've come across some very hard "tempered steel wire 0.104" 12ga., it came from a fallen high voltage transmission line, it's the core wire inside of at least 7 aluminum wires. The question I have would this steel wire be alright to use as an antenna instead of copper or aluminum. It is so hard that it should be spot heated to cherry red to bend it, otherwise it will likely break if bent to the usual radius for copper ground wire? regards
rusting will get you
the vhf addon works by something called magnetic coupling
Coupling yes but not magnetic in this case. The two rods near each other out at the ends like that do a capacitive coupling.
I am a little bit confused Danny. Whenever you are on the church land with your trailer you didn't have a hard time getting that channel. You got them all good signal. Just down the road at your house that channel don't work without a hat. I've seen every one of your videos 52 x LOL I've never seen a big antenna in the front yard miss a Channel that bad. It just stopped working on that channel have you figured out why?
ny front yard not a good spot
@Wes Walker
- Obstructions would be a big problem. That's including Trees, Hills, Clouds, Buildings, etc....
Getting materials together to make this antenna,and can't seem to locate the plastic you're using. Which store do you get it at? thanks
Thanks for the entertaining
videos!
I think they are PVC fencing materials. Home Depot or Lowe's should both sell them.
I'm still not sold on the Hooverman though I bet its a good antenna. I will stick with the ultimate antenna, especially since I built one and it works fantastic, UHF and VHF. I'm waiting for the Ultimate vs Hooverman video!
THAT HOVER IS HELL WITH THAT ADD ON
So do the top hats you built end up being a wire 28" long? It seems like your working with a 7" wave length, so 4 X 7 =28". Right?
I also would like to know the length of the wire in the top hat.
@@hogcat858 - It suppose to cut in " half " = 14" each Side. Also, you need VHF and UHF to be separate. You join them with a Pre-Amp with UHF+VHF Input. Other than that, it will be no good!
hello great video
tks
Danny, I like your videos. I built the Hoverman with Hats, but I'm having trouble with them "shorting out" in rain. Seems that enough water flows over the wires for the hats to make contact with the center wires. Not sure what to do about it. I'm thinking of removing the hats and using your VHF antenna added to the Hoverman.
maybe instead of 1/4 inch over top, put it off to the side so water will drip but not hit the other wire.
@@wagstail4804 - What about heavy snow? :(
Danny, where are you getting the square or rectangle plastic tube?
fence pickets a man give me a truck losd
try a design of hat on the ultimate antenna clearly it would be shaped differently
LOL
where can you buy square pvc ..ect to build for the boon?
I think they are PVC fencing materials. Home Depot or Lowe's should both sell them.
The "un-connected rods" are either directors or reflectors. They "channel or drive" the signal toward your antenna elements.
I KNOW YOU HAVE TO BE RIGHT..IT SURE WORKED GOOD...I DONT NO IF THE ULTIMATE ANTENNA CAN BEAT THIS SET UP HERE
BEATS ALL I EVER SEEN
Thank you Dr. Hodges
keycontrol tks
Another thing the seemingly "worthless rods" on an antenna do is increase "*gain*." If you skint 6" of insulation from a piece of antenna wire and bent the center wire left and the copper insulation sheath right, you would have an antenna called a "*dipole*". Might pick up stations 15 miles away with only that. A dipole's "*propagation pattern*" (shape of the area it receives signals from) will be a 30 mile sphere. Able to get just as strong a signal from the direction of The North Star as from the east or west horizon. No tv stations overhead, so that reception is *wasted.* By reshaping an antenna you can change the useful propagation pattern. Like if you had a balloon on your lap and you pressed down from the top, the "overhead pattern" is less while the north west south and east "*pattern*" extend farther away from the middle. The antenna is really no "stronger," but the *useful signal pattern* is increased.
Danny, have you tried this add-on with the $12 antenna reflector? Also, have you tried it w/o any reflector, like your reference pictures show? Thanks again.
YOU NEED TO WATCH MY REFLECTOR DEMOSTATIONS
Thanks, Danny. However, you made this video on Jan 7 and the $12 reflector video on Jan 10. I don't see a video after that, which shows you comparing the different reflectors and the Hoverman w/o a reflector or w/ your $12 one. Is your referenced video called "REFLECTOR DEMOSTATIONS" or is it listed somewhere else? I was thinking the modified Hoverman, w/ the hats, and your $12 reflector might be a winner. I was just looking to see if you've mixed and matched the designs. Thanks again.
go to my channel i got 90 vidieos
The top and bottom unhooked section is a vhf director. For the low vhf channels.
where is your ground wire for the antenna
Ground is his Pole, other than that none :/
You need to study "Resonance"Danny, it's how every antenna works.I'm not sure those extra piece will make a difference but it's very possible. "Capacitance" is another thing "Inductance" is another you should study a bit as well.
@
GhettoRanger - 100%
Here's my home built Wi-Fi antenna, it's got roughly 12dB gain, non-parobolic, and it grabs more access points than I could have imagined
i67.tinypic.com/b4wbv9.jpg
i66.tinypic.com/eqr2v5.jpg
@Ralph Cramden
- Oh cool! Thanks for sharing!
You are creative and beautiful and your work is wonderful
Can you provide translation for Arabic in the next videos?
Greetings from Egypt 🌹🌹🌹
Tape is not a dielectric with regards to RF. Something to think about.
1:19 lol
Hey Dr. Hodges, I know how much you like to use unconventional items when you build your antenna's I thought of a insulating product (" Plastic water bottle top")
LOL I MIGHT HAVE TO TRY THAT
GET a mfj antenna analizer
You really don't want to put an antenna up there where the sun don't shine
You currently don't what u doing u cut up alot of money 😢 800 foot copper wire antenna so it's like burning 1000 dollars up folks study arrl antenna handbook ok I live in se alabama pick up sc how long wires go beyond like star tech this guy is Elmer fugr😅
I have long pasted land my wire goes beyond 1000ft foot of copper wire chewy wire ch master 7777😮 no such Thang as uhf vhf wsfa vhf wcov tv alabama share the the same tower same as clombus ga cusste ga go look at there towers rent toseveral folks gosh go play your drums 🥁 lol boy in vatem war falling down .but in the park 😅
Go fishing with a snoopy pole lol 😂 I use big boy 18 foot tower pole in my 120 foot pine-tree 🌲 folks ladder stand up up put the antenna up ground it 😅lol stay on the ground antenna launcher 40 hrs huh to Study 😮 how to 2x2 4 lol
Blah 😢🎉 study long wires rhombic antenna ppl don't buy
Ugh ugh ugh ugh ugh.. and ugh uuggghhhh.....