A short video showing two of my homemade Yagi-Uda antennas for 70cm. One el-cheapo (actually free) wooden 7 element and a much better built 10 element.
Hi john, I have built an 8 element, but dont use a coax matching stub, my reflector is a lot closer to the driven element which drops the impedence down to 50 Ohms. Mine is made using connecting block (chocolate block) to secure the Stainless steel elements above the boom. Its great fun when you build up simple yagis. I'm now in the process of building a pre-amp as my ICOM IC290 isnt as sensitive as modern radios but is extreemly well filtered and screened inside. They built them well back then. Thanks for the Video 73 and hope to work you on 70cms Cheers Mark
Very nice! I'm curious about the 4:1 balun. I thought that folded dipoles had a 300 ohm impedance, so a 4:1 would make it 75 ohms, which is probably fine. I've used 75 ohm cable a lot on 2 meters and above with no issues myself. Or do you match the 75 ohm to 50 with a matching section. 73's W1RMD.
I reckon it should Be Made From Copper. I have Accumulated A HUGE Deal Of Copper and I'm making antennas from it, i have large wires, pipes, wires, rods, all diameters n stuff. :) if you are a HAM, always collect copper like that because steel IS NOT THE SAME.
Better have it drilled through the boom, makes the elements sturdy... another way is to make the driven section as a DC grounded folded dipole, easier to build.
I see you referred to it as a 7-element later on! 😀. Love the 10-element update. That must be *very* directional. Clothes on a clothes-line, with pegs...? errr, helloe...you have heard of a drier in England, I hope. 😂
Do you have the dimensions of the antenna!?i sm interested in building one myself but i could use some sizes and dimensions!Please!Thank you and 73’s from California!
In the video at one stage you were pointing the aerial uploads and talking of satellite signals. Can you really get satellite tv signals form this terrestrial aerial?
Just coded with used motor oil the old days we used to the fence of the Farm you can also barbecue blacking with a flame not making the wood burn completely nice ways without paint Why Not use it on a little Wood antenna
Can u use it to pick up wifi signals like MCdonalds or the ffcc is not for this its for radios and tv's there by not Allowed because its to big and surpasses fcc ?
How does it perform? Did the elements have the be same lengths as on wood? www.vk5dj.com/yagi.html should I choose design: Parasitic elements fastened to a non-metallic or separated from boom?
Kenny Nicholson maybe they don’t know where to look online. Why don’t you give them the web address or link. Instead of calling them lazy. Remember at one time you didn’t know either and had to be told where to look. Be more helpful instead of being an ass.
I was searching for a DIY FM aerial, because the station I want to listen to is very distant. This aerial looks very good. But you use terminology that is unintelligible to me, a novice, and no measurements. I have no problems with constructing this, but how. Not sure why you made the video.
Hi john, I have built an 8 element, but dont use a coax matching stub, my reflector is a lot closer to the driven element which drops the impedence down to 50 Ohms.
Mine is made using connecting block (chocolate block) to secure the Stainless steel elements above the boom.
Its great fun when you build up simple yagis. I'm now in the process of building a pre-amp as my ICOM IC290 isnt as sensitive as modern radios but is extreemly well filtered and screened inside.
They built them well back then.
Thanks for the Video 73 and hope to work you on 70cms
Cheers Mark
I love home made antennae. And all the different types of materials you guys use.
That version 2 antenna is lovely. Very tidy and Pro looking!
Nice looking HB antenna. Good idea insulating the elements with perspex.
looks great! It would be nice to see it in action too.
very well made and I like the construction method, looks very rigid.
From Peter M. Great video, Antenna looks great. You did not include the measurements, needed to make this antenna!
Very nice! I'm curious about the 4:1 balun. I thought that folded dipoles had a 300 ohm impedance, so a 4:1 would make it 75 ohms, which is probably fine. I've used 75 ohm cable a lot on 2 meters and above with no issues myself. Or do you match the 75 ohm to 50 with a matching section. 73's W1RMD.
Very well done indeed. Gave me a few goodtips.
Thanks VK3CBP
the antenna is broad band most probably can handle 432 to 440 if i am not mistaken.
Forgot to ask you what would you make for a VHF and UHF max antenna. Good day too.
I reckon it should Be Made From Copper.
I have Accumulated A HUGE Deal Of Copper and I'm making antennas from it, i have large wires, pipes, wires, rods, all diameters n stuff. :)
if you are a HAM, always collect copper like that because steel IS NOT THE SAME.
I want to replicate it the antenna so please give us the measurements you used
Nice work!
Could you drill through the boom and use rubber grommets to insulate the elements?
Hello, I was wondering, if I'll use a steel bracket to hold the elements, will the gain of the antenna be affected???
please tell me how you made the balun
thanks for videoing this :) I am interested in making one, do you have the measurements please ?
Kieran Beal mi
Kieran Beal
Yes, I used the VK5DJ Yagi Calculator which calculates DL6WU Yagi antennas.
4 years late, sorry :)
Not sure how you count "elements" but 5 directors, 1 driven, and 1 reflector totals 7 to me.
What if we use those tv antenna which have those kind of design?
Looks brilliant! What’s the purpose of the 4:1 balun?
it is a sheer beauty!!!! :-) wish i had one to test....
Where can I get the plans for #2✅??😅
Great work.
Hi do you have a formula to the balun? Is this fed with rg58 and what is the swr curve on band please
its simply amazing
I would still use a grill reflector.
What frequency does it capture?
Nice!
What was your reason for using RG-400 for the balun?
nice work. do you use an online calculator to determine the element spacing?
Better have it drilled through the boom, makes the elements sturdy... another way is to make the driven section as a DC grounded folded dipole, easier to build.
whats the gain of this antenna?
Got any plans for a low VHF TV antenna? They've disappeared from the market
But you didn't give the measurements you used to make the yagi antennas
telling about helix and b quad antenna. i m confused which antenna are short and which are not..
please comment in Spanish , also. comentar el video Homemade 70cm Yagi Beam Antennas de la antena yagi, en español!!!
Is no.2 good gor 20 to 800 scanner base?😅
nice design!
I see you referred to it as a 7-element later on! 😀. Love the 10-element update. That must be *very* directional.
Clothes on a clothes-line, with pegs...? errr, helloe...you have heard of a drier in England, I hope. 😂
In Britain, we like to make use of a thing called the SUN to dry our clothes. Look it up.
DId you do away with a balun and use the RG400 coaxial cable ??? Thanks
Doesn't changing the type of boom from a wood insulator to a metal conductor change the required lengths and spacings of the elements of this antenna?
Dii Kwadd No, I usually insulate my elements from the boom.
Do you have the dimensions of the antenna!?i sm interested in building one myself but i could use some sizes and dimensions!Please!Thank you and 73’s from California!
How do you determine the spacing between the bars on the antenna?
does each element need to connect electrically/by wire?
Material wise what did you use to build the second antennae with?
In the video at one stage you were pointing the aerial uploads and talking of satellite signals.
Can you really get satellite tv signals form this terrestrial aerial?
Spec ies Amateur satellites, for communication.
whats the diameter of the rod please?
How much is the impedance of your antenna?
I would like to learn how to build this *_balun_* . 👃👀
Here I used the VK5DJ Yagi Calculator software.
Нормальный подход к конструкции!!!
Hello, Please tell me how to box my strings attached? And the length of the wire loop should be? Thank Amir
18 ft and use Blu-Tac.
Is this anthena really help booost download speed and upload speed?
ooooooooohhh shit version 2 AIN'T NO JOKE!!!
everyday we are getting more crazy, now we make antenna's on wood, how long will that last?
Just coded with used motor oil the old days we used to the fence of the Farm you can also barbecue blacking with a flame not making the wood burn completely nice ways without paint Why Not use it on a little Wood antenna
The little squares that hold your element, what is the material you used ? Is it acrylic ?
Yes. Perspex = Acrylic.
Can u use it to pick up wifi signals like MCdonalds or the ffcc is not for this its for radios and tv's there by not Allowed because its to big and surpasses fcc ?
depends on ur budget. I'd use a parabolic grid, a alpha WiFi thingy, and connect dat to ur pc
and fuck ffc
Is this antenna for RX only or for TX too?????
can a normal multimeter measure the ohms resistance so I can see if it is made correctly
Hi. No, its impedance which is effective AC (RF) resistance.
@@sparkie21 so I guess I need a little antenna tuner
Nice
Folded coatpole.
bom dia , pode enviar o esquema desta antena grato
Real diy
привет скинь чертёж этой антены в ютюб
measurements plzzz
How does it perform?
Did the elements have the be same lengths as on wood?
www.vk5dj.com/yagi.html
should I choose design:
Parasitic elements fastened to a non-metallic or separated from boom?
like....thanks..for.open...the...box..I...need...lock...these
Can you provide us de dimensions for elements and distance between them. Thanks!
Marian Doboseru
Lazy! use online calculator like everyone else.
Kenny Nicholson maybe they don’t know where to look online. Why don’t you give them the web address or link. Instead of calling them lazy. Remember at one time you didn’t know either and had to be told where to look. Be more helpful instead of being an ass.
No measurements
Mario Genoguin I used the vk5dj yagi calculator for these.
What is the spacing?
I want to try but not measurement show please give us the measurements.
Lazy! use online calculator like everyone else.
@@KennethNicholson1972 Gee, that was a nice answer.
@@trainmaster0217 And also true.
No apenas llegó a
scheme de antenna band 70 cm ok thanks!IW9GYW my qrz skype contact for you
I was searching for a DIY FM aerial, because the station I want to listen to is very distant. This aerial looks very good. But you use terminology that is unintelligible to me, a novice, and no measurements. I have no problems with constructing this, but how. Not sure why you made the video.
did you build yours? i am also interested for the same purpose
Video made for entertainment purposes for those with similar interests. Lazy! use online calculator like everyone else.
Nice work !