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36 dollar DIY/ HAM radio mast. Easier to put together than a 2 dollar Lego set. 

Elliot Huh?
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(Two important points I want to make even though my mast has remained standing for over a year in high winds of 30mph+ with out guy wires. It does move a significant amount an inch or so, in high winds of over 30mph. A 2 inch 10 foot metal pipe is stiffer, than this unistrut. Adding guy wires will remedy this problem. Anyways, vinyl wrapped metal wire , wood spikes and some eye hooks works for guy wires 28 dollars or so total cost.. This may upset the sad hams out there. )
This is my 36 dollar dyi ham radio mast. fyi I put some cement below and around. The bottom cinder to help bind better. Now that I think of it. It would probably come out cheaper than 46 dollars. The metal beam. Was 23 dollars, the cinder block were around 8 dollars. And the quikrete cement was about 5 dollars. So about 36 dollars. For the mast and base. The metal beam can be placed in the cinder block first. Or if preferred, it can be pushed through freshly poured cement. Very easy and simple to build. The beam has channels on both sides. Which coax can be tucked away in. The Antenna is a DBJ 1 by Ed Fong. Available on ebay for about $40. Al though, its cheap it works very well on 2m and 70cm. I may eventually add a second ten foot mast. On top of this one perhaps add an extra 7 feet of height. I may weld it on. That will ultimately give me about 17 feet of height. I believe adding much above 15 feet. Would need a larger base. Or guy wires. Update: I recently spray painted the base of the mast black and it gives it a lot cleaner look than the concrete. And potentially gives it a little protection. From the elements. 73!

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29 сен 2024

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Комментарии : 85   
@preacherjohngroves9647
@preacherjohngroves9647 Год назад
Great setup. I have same thing… 2 bolted together and guyed for HF and another bolted to old satellite mount to make it a tip over for easy maintenance for my 2 meter Yagi. Both have been up for 3 years in all severe weather conditions with no problems. 73!
@elliothuh669
@elliothuh669 Год назад
This stays up in high winds. But to prevent movement. It is a good idea to guy it. I used some vinyl wrapped wire from home depot for guy wires.
@preacherjohngroves9647
@preacherjohngroves9647 Год назад
@@elliothuh669 used paracord on mine.
@DellFargus
@DellFargus 2 года назад
I use a telescoping flagpole from Harbor Freight with a 10' stick of emt conduit that is hose-clamped to the top section of the pole. Total height is about 30'. When I'm done using it, I just collapse the pole.
@basshorseman998
@basshorseman998 2 года назад
Bolt two of them back to back. I think that would hold up better for more height. I'm considering it for myself. I also understand superstrut makes a welded back-to-back but, I could not find one
@elliothuh669
@elliothuh669 2 года назад
Yeah that would certainly help. With the overall height of the mast. I will need some longer coax before I do that. Also a larger stepping stone base can be used etc. You get the idea. However, the base I have has been rock solid. Even in bad weather conditions. And wind events such as the Santa Anas that we get here in California.
@MeOnTech
@MeOnTech 9 месяцев назад
Nice
@CrazyBossDK
@CrazyBossDK Год назад
Will it survive a storm?
@elliothuh669
@elliothuh669 Год назад
Mine has survived many a storm. I do have guy wires on it though. It might not fall over in a storm but it will rattle a lot with out guys.
@oldpreach
@oldpreach 2 года назад
Nice. Bit with that solid a base, you could have went with 20 ft Plus for sure
@elliothuh669
@elliothuh669 2 года назад
The mast has already survived heavy winds. Santa Anas gusting up to 40mph. And storm weather heavy rain and wind. With out any issues at all. No cracking of the cement or bending of the strut. As others suggested might happen. There is also always the option to make the base wider.
@stevec9889
@stevec9889 7 месяцев назад
Did you use the 14 or the 12 gauge Superstrut?
@elliothuh669
@elliothuh669 7 месяцев назад
14 gauge
@805productionsnothacker9
@805productionsnothacker9 Год назад
Where’s your ground? Sticking the strut into the ground doesn’t count.
@starsoldier3643
@starsoldier3643 2 года назад
I'm thinking it's a very good lightning rod.
@trumpdonald6911
@trumpdonald6911 2 года назад
There’s a lot you can do with Unistrut, along with hardware made for it.
@danbasta3677
@danbasta3677 Год назад
Is this what this mast is? I kinda like it. I'm more into tv towers, however for a quick, cheap, yet nice somewhat solid set up especally with todays much smaller tv antennas that are available out there, this looks to be about the very best option. Only question is, how do you go about bringing this all down if you have to change the tv antennas for either repair, maintaince or replacements. I know that this is more of a cb antenna for cb use, however it can be used for todays much smaller tv antenna system head ends distribution for television viewing purposes to. Looks to be a good idea.
@trumpdonald6911
@trumpdonald6911 Год назад
@@danbasta3677 it is unistrut. They come in different sizes depending on how strong you need it to be. It's not that heavy either if you need to take it down. The standard is hot dipped galvanized so it will last a long time outdoors.
@elliothuh669
@elliothuh669 Год назад
@@danbasta3677 The best way to do that is to tilt it. Or to use a ladder.. It is very easy to tilt. As long as the base isn't too heavy.
@snowbird29803
@snowbird29803 2 года назад
That's a nice job for a semi permanent need for renters etc. I contrived a poor-man's 27' mast. made from 3 sections of electrical EMT that telescope in to each other by about 18" and drill/bolt at joints. Or drill a couple pilot holes and use screws. Some skinny metal shims are helpful in the overlaps. Bracket to side of building and set on a piece of Rebar in ground. A ground rod completes the install. Great for TV and Ham VHF
@evanfinch4987
@evanfinch4987 Год назад
You can use IMT threaded couplers as an alternative to drill/bolt joints for EMT tubing. I pounded them in with an air hammer, but you can easily do it with a small sledge. I have a 30' EMT mast bolted about 12 feet up a birch tree with a Coment GP-3 at the top for about 50' total height.
@joe.O7X
@joe.O7X Год назад
Also a renter for the time being. Same thing I did, although I only got mine about 20 feet
@mexico3459
@mexico3459 4 месяца назад
Nice one won't go any were in the wind I like the way you added the concrete 👍👍
@elliothuh669
@elliothuh669 4 месяца назад
Yup it's been through plenty of high wind events. It's still standing as I type. 🙂
@k8byp
@k8byp Год назад
VERY POOR JOB. Violates Electrical Code, not grounded. Very bad to mount the antenna with that large metal strut inside the elements. Not safe, not sufficiently supported. Neither you nor whoever you got this from knows anything about this topic
@elliothuh669
@elliothuh669 Год назад
True not grounded @ the moment ill agree with you on that. All the other stuff meh. It will probably out last me. Not properly supported . Then why is it still standing after more than year? After being exposed to high winds, rain and weather. The antenna mounting can def. be improved just haven't got around to it. The yagi for most situations should be mounted vertically instead of horizontally. So it's not "inside" the elements. At least not any more. I even have a similar set up with an Antron A 99 the galvanized metal rod, concrete base, isn't going any where anytime soon. And it's not going to tip over either. Not even a hint of it potentially tipping over. In high winds .The antenna would probably snap before it tipped over. it may not be the best set up. But it certainly works.
@timmack2415
@timmack2415 2 года назад
Fence post top rail is an excellent choice too. Galvanized steel, 22 ft length or 11 ft I hope you are going to follow NEC and ground that.
@GoonyMclinux
@GoonyMclinux 8 месяцев назад
Yep, he's going to go buy $100 worth of #6 copper wire and an additional ground rod or two so he can properly ground a $20 temporary mast....... For sure. 😂
@timmack2415
@timmack2415 8 месяцев назад
@@GoonyMclinux #4 copper is .79¢ a foot. Looks like he'd need to spend a whole $4.00! Then to the utility ground. And who needs a stinkin' ground anyway. That whole Ohm's law thing and difference of potential creating a risk of death or a house fire doesn't't scare me. Neither does violating NEC requirements. So what if someone dies or my house burns down and my insurance company can deny the claim because of my negligence or I go to jail for a decade or so for manslaughter. Minor details.
@GoonyMclinux
@GoonyMclinux 8 месяцев назад
@@timmack2415 no ground on a mast isn't going to burn your house down, also I doubt 4 feet of #6 is going to reach the main ground, maybe read the NEC before you start phucking sad hamming.
@timmack2415
@timmack2415 8 месяцев назад
@@GoonyMclinux 😆😆😂😂 Awwwww, are you going to be okay? I've been an electrical engineer for three decades and I've been on NFPA's Committee for 9 years, so I think I've read it. You know, every time I lower the bar on human expectations, someone manages to limbo right underneath..... Congratulations!
@timmack2415
@timmack2415 8 месяцев назад
@@GoonyMclinux" No ground isn't going to burn your house down" 🤭😆 I would normally take the time to explain it in terms that even you could understand, but I am fresh out of crayons and finger puppets today.
@davep6977
@davep6977 2 года назад
Uni-strut (super strut) use it on many antenna projects. Erector set adults. Very rigid, not good for beams because it twists easy.
@Del-Mondo
@Del-Mondo 2 года назад
Nice and clean. How’s the Range so far ?
@timwilkinson908
@timwilkinson908 2 года назад
Why didn’t you use full size strut? 1” 5/8
@elliothuh669
@elliothuh669 2 года назад
You are correct a bigger strut will make the mast more solid. I may post an update video. I actually put a round conduit pipe. Inside of the strut and pushed the coax, inside the strut too. The base of the Antenna is about 16 feet off the ground . It could reach around 23 feet if I put the conduit further up the strut. Not sure how it would handle wind load though. So yes a bigger strut. Is the way to go for a higher mast.
@CatWith-AHat
@CatWith-AHat 2 года назад
Now once the cell towers get taken down I can build this to communicate with the other settlements.
@nilpo
@nilpo 2 года назад
Cell towers go down all the time.
@1942Grampz
@1942Grampz 2 года назад
Great project, and I am sure the holes all the way up will help to reduce wind stress on stormy day.
@mikemcdonald5147
@mikemcdonald5147 2 года назад
what section of home depot has the super strut? I didnt even realize they carried that. Too cool. Ive need some for various projects before.
@elliothuh669
@elliothuh669 2 года назад
Best way to find that out. Is to look it up online. Select your local home depot and then type in the item name. SuperStrut B-1400 Or just ask someone working there.
@BryanTorok
@BryanTorok 2 года назад
At my local Home Depot it is in the electrical department in the area with metal conduit.
@chuckgentry3613
@chuckgentry3613 5 месяцев назад
I wonder how resistant to tipping this is? I am thinking of it as a wire antenna support.
@elliothuh669
@elliothuh669 5 месяцев назад
For what it's worth I have never had any "tipping issues" at all. With my masts. I live in So Cal @ sea level so no hurricanes ,or anything like that. I put guy wires. Basically only to prevent the mast from shaking violently in high winds. Rather than preventing it from tipping over.
@CivilDefenceCanada
@CivilDefenceCanada 2 года назад
What Lego set costs $2?
@Doodlez4
@Doodlez4 2 года назад
I'm late to the party, sorry. I like the simplicity of it all, but am I the only one that is wondering... -- if you poured the concrete last night, and it's still curing, how/why did you mount the antennas already? Shouldn't you have waited a few days for it to fully cure?
@elliothuh669
@elliothuh669 2 года назад
Yes the concrete was still curing. But it was pretty hard already. It gets most of its strength fairly quickly. And can't take up to a month or more to get it's full cure. In reality, concrete never stops curing.
@AlvinMcManus
@AlvinMcManus Год назад
@@elliothuh669 You are correct. Concrete never stops curing, however in your case if you used "normal" Quikcrete then your seven day strength would be about 75-80% of design which for this mix is 3000psi in 28 days. I used to be a certified concrete inspector and I have cast a couple sets of cylinders of this mix and it works fairly well if you don't add more water than is necessary to create a plastic mix. I like the concept and think that maybe two stacked car tire carcasses would work as well and give you a much wider base. If you just that to use concrete blocks then I would suggest a 12"x 8x16" standard as they weight over 50lbs unfilled. You still have the grounding issue, but an 8' copper rod and an impact post driver should take care of that.
@elliothuh669
@elliothuh669 Год назад
@@AlvinMcManus Yes it can be scaled up. However, part of the benefit of this set up. Is that it can be tilted in order to mount an antenna , as well as moved around. As the base becomes larger it also obviously becomes harder to tilt and move. I made another similar mast and put an Antron A-99 on it. Believe, it or not it's actually handling that antenna just fine. It's been up for about half a year. With out tilting the mast. That antenna would of been very difficult to put up. As it has total length of about 17 feet or so.
@tripledippedorange1538
@tripledippedorange1538 8 месяцев назад
Not sure if it was asked but what did you use for lightning protection if at all and is that a serious concern? I have acces to that material you used as an electrician for free as scrap from my job and i never thought about using it. Seems like a good cheap alternative to me.
@elliothuh669
@elliothuh669 8 месяцев назад
As far as saving your equipment from a lightning strike I don't think any amount of grounding would prevent that. From what I have heard and that does make sense to me considering the voltage of a lightning strike. Best bet would be to unplug the coax get it away from the radios. Some people stick them out their window.
@vinnyboomba9948
@vinnyboomba9948 Год назад
WHAT a great idea and use of on hand material.
@marcreynolds7948
@marcreynolds7948 2 года назад
I don't trust its stiffness in its minor direction. I'd add another Unistrut at 90 degrees against the first one so that there is an I-beam profile for both wind directions.
@elliothuh669
@elliothuh669 2 года назад
I could be wrong. But I am not worried at all about the stiffness of the Unistrut. It's fairly thick galvanized steel. And it's not exactly at a towering height. It's ten feet up. This thing is not a tower that needs some crazy support and planning lol. But to each their own.
@kingmasterlord
@kingmasterlord Год назад
@@elliothuh669 1 yeah later how's it holding up?
@elliothuh669
@elliothuh669 Год назад
@@kingmasterlord It's held up perfectly fine.
@Dfk429S9fo3
@Dfk429S9fo3 Год назад
That is lower profile strut. You can get it square and it's even stronger.
@MulligansDen
@MulligansDen Год назад
That superstrut in Canada is ~$70 at Home Depot!
@rfdave3980
@rfdave3980 Год назад
Yep that's Canada for you. More money for Truedoh$
@madjack8893
@madjack8893 2 года назад
Nice cheap solution, new sub. 73
@elliothuh669
@elliothuh669 2 года назад
Thanks 73
@languagetruthandlogic3556
@languagetruthandlogic3556 2 года назад
Great idea, nice and simple! Does using a steel pole affect the signals from the yagi?
@elliothuh669
@elliothuh669 2 года назад
I insulated the Yagi from the steel pole using some double sided tape.
@languagetruthandlogic3556
@languagetruthandlogic3556 2 года назад
@@elliothuh669 Great, Thanks. I'm off to the builders tomorrow. 73!
@elliothuh669
@elliothuh669 2 года назад
@@languagetruthandlogic3556 NO problem 73
@la7dfa
@la7dfa 2 года назад
If you had the yagi vertically, it would reduce the gain by 1dB or a tad more. For horisontal polarity the mast have little effect. Insulating the yagi from the mast will not change the effect of the mast as a part of the antenna.
@elliothuh669
@elliothuh669 2 года назад
@@la7dfa Thanks for that advice and yes you are correct. No need to insulate. In fact, it's beneficial not to do so.
@G0ogs
@G0ogs 2 года назад
The wonders of unistrut, you could build a bridge out of that stuff
@RedNeckSurgeyTech
@RedNeckSurgeyTech 2 года назад
Great idea! Thanks for the video and 73.
@waynedoomad2573
@waynedoomad2573 2 года назад
Nice, it looks better than using fence post
@fourfortyroadrunner6701
@fourfortyroadrunner6701 2 года назад
All the kissing in these comments. I see no need for this. Various types of tubing / pipe is much better and generally stronger, including built-for purpose TV mast. Plus round mast is easier to clamp an antenna to, and aim it
@elliothuh669
@elliothuh669 2 года назад
Use it then.
@thomasmaughan4798
@thomasmaughan4798 2 года назад
"All the kissing in these comments." And the usual complaining about what other people have written. And the usual commentary (mine!) on people complaining about what other people have written.
@alfredkwok9239
@alfredkwok9239 2 года назад
terrible antenna setup
@N5LRZ
@N5LRZ 2 года назад
errrr decent height in my book starts at 40 to 50 feet.
@elliothuh669
@elliothuh669 2 года назад
I could probably add another 10 feet to this with out it tipping over. Which is not really my concern. Especially, if I added a wider base. Perhaps, the integrity of Unistrut could be an issue. Particularly, where two pieces are jointed. Sure, decent height could start at 900 feet too. But not every one wants to install a proper tower. Or live on top of a hill. There is always the option to guy wire it. For added assurance.
@thomasmaughan4798
@thomasmaughan4798 2 года назад
"decent height in my book starts at 40 to 50 feet." That's nice.
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