2 4GHz Yagi Antenna

[@hoggif]

No balun, why?? The number of access points can be a measure of how wide a beam is. The wider it is, the more nearby APs you'll find. However, a narrow bean can also find APs from farther if they happen to be on the line of beam. I think some other measurement like signal strength from A to B is much better measure for a directional antenna!

[@lazarstevanovic8887]

Thanks mate,i just finished mine and it work amazing. Cheers!

[@knokcs]

no balun?

[@seasonedtoker]

You could squirt some expanding polyurethane foam inside the square tubing to better hold everything together.

[@3dravo]

OMG i turned on subtitle to see what you say for epoxy and didn't turn it off. And on 5:27 things get weird and i'm still laughing :)))

[@MrMinedaaark]

+3dravo hahahahaha the best

[@veden310]

These are sharp-pointed antennas, what's the point of measuring the number of stations caught? They just do not have to catch everything around. It is more correct to direct the antenna to the source of interest and to measure the signal power. Non the less it's an interesting video.

[@ME-zu5kg]

Andrew you say the parasitic elements are 55mm's long your you have written 50mm in the video. Please confirm.

[@andrewmcneil]

+FPV SPY They are 50mm long did I say 55 in the video?

[@MichaelBrown-yo7mu]

Nice One Andrew all your video's are interesting and informative. I have built several of your antenna's and get great pleasure making them. Another Antenna that people may be interested in you making, is one for the freeview UK tv stations, I would love to build one for the caravan. I look forward to your future video's.

[@-ColorMehJewish-]

Can you show how to possibly modify the cheap Yagi you show in both videos? So many people have been fooled with these POS's, and if we were to modify them - we would have all the pieces to utilize - we can possibly mod it so it is not wasted all together. You mention that you are not a fan of yagi antennas also. I can understand this, but I wanted to ask - What type of antenna would you prefer for long distance, targeted directional antennas? Do you prefer the dish-type? I personally just hate the expenses with N connectors, and try to avoid them if possible. I also wanted to ask (since you seem to have some knowledge in the subject), can you use other types of antennas to make more powerful or more efficient cantennas? Maybe using a cone, and reflecting back to a directional antenna like the Alfa 7dBi version? I have wondered if one of these were pointed at a reflector, (rather, the reflector pointed at it), similar to what we would see with a radio telescope, would the directional/panel antenna gain more of a signal if it were positioned in such a way? Or would it cause too much noise?

[@angrycatowner]

A real test would be to make 2 of them, and place them 10 miles apart, and try to link them.

[@n.w.aicecube5713]

@jaafar sabah you'll never know

[@Vigilence]

wow very Nice.

[@neodiy]

When you slipped in the metal antenna into the aluminum holder do you coat it with something to prevent contact or allow it to contact with it

[@hankosaurus]

No need to insulate the boom from the reflector or from the parasitic elements.

[@stevefox3763]

Seriously considering making one of these to go on an antenna tracker for rc control :)

[@B56H2]

why the dipol is in the middle Wtf>>>>>

[@yoyellow1]

Very nice, im gonna try to make this as well. Just wondering; the boom, parasitic elements and the base are all connected electrically?, if i were to use soem other material like pvc for the boom do i need to connect all the parasitic elements with a wire or not..?

[@thomasracerwrc6100]

You do not answer but thanks! this one worked very good for me, not like yourd but yesvery good, it is better thatn my previus bicuad.

[@Mr.Albertos]

all antennas u tests are suitable for receiving and transmitting?

[@edinfific2576]

Of course.

[@hainstiktok8013]

Hello sir, can i know, what equation did you used to make this yagi antenna?

[@garym6950]

Wow top job

[@vanessacorp50]

Andrew what is the best long range antenna that you would recommend for me 5.8

[@philrichmond7567]

Hi. What range was the build? Nice video too

[@johnhill5745]

Great vid thanks.

[@llllChrisllll]

can you add more parasitic elements onto the end make it longer for a more narrower longer distance?

[@Zinacharme]

thank you!!

[@user-sd8fl8dp9s]

How did you measure signal strength of Yagi antenna? And What is that silver device connected to the Yagi antenna?

[@Vigilence]

You say that the tube is 100mm long but I gotta say it looks around 350mm or so long. Can you share the dimensions of the tubing you are using. I may need to adjust the element length according to the my particular tubing dimensions.

[@cererec9766]

i think it is roughly 260mm length of aluminum tube

[@stevefrost8789]

you have got to set up a proper test bed for the antennas. you wont know where your at. use your wireless router as a signal, in a clear space, same with the test antenna and always have both in exactly the same position. the higher the gain of the antenna the more clear space around it is needed. [ capture area ] including height. 20dbi needs 3 wavelengths + .. carefull with your usb wireless adaptor some of them will give you false results. they generate there own signal and interfere. cheap chinese ones are notorious. you can get a band pass filter on ebay to eliminate interference from other frequencys... when an incomming signal is amplified it brings in all sorts of harmonics which can stop you getting any readings at all specially in city areas, up high and outdoors. ive been sending wifi 4 km away and there is all sorts of problems with this. i use grid dishes, amplifiers and now satellite dishes... big signals both ways, and not even in line of sight

[@OPatron24]

what mathematical calculations account for the spacing of the reflector, driver and other elements?

[@jameswest3890]

Do you thing it would work if you used a very short cable from the antenna connection into a network adapter. Than from the network adapter usb output into a "usb to lan? adapter. Than run cat5 down to your pc. I need to make a long run from an attic antenna.

[@roki5941]

Hi... I like to se people building stuff instead of bying,,, I am looking for messurements for a DIY 1.2--3 Yagi,,, can you please give any pointers on where to find !? //Rob

[@DarkrickNetwork]

do you have a video for diy wifi yagi antenna in PVC pipe? have you mod any cellular for getting LTE sinal with ext antenna?

[@BarefootBeekeeper]

That boom is more than 100mm long.

[@devilvortex1]

the diameter of the tubes matters?

[@naranjasparks5111]

Does the lenght of the coax cable make any difference on the performance?

[@Vigilence]

Does the frame have to be made of metal?

[@rogue_spirit]

No. As shown in the beginning the frame can be cardboard.

[@network7598]

do i need to ground the director and reflector sir?

[@GameplayerSolCley]

will it work better whit more elemets my friend?

[@inspectormore-anonymous1259]

your elements are very offset running through the boom, measure twice cut once andrew, that has to affect performance being that much off

[@Robmanian]

So what would you recommend for long range?

[@stevenyoung5433]

Will 3.5mm wire work??? PLS reply

[@mpwieland]

sorry, i did not understand your voice talking about the length of the driven wire 2mm, is that 126 mm?

[@racketman2u]

that's what he said, bends at 1/4 and 3/4 of length.

[@rhosihan]

hay master. in this video u using iron wire. how about copper wire ? thanks

[@rogue_spirit]

Same.

[@OliFPV]

thx 👍 👍 👍

[@craigpalmer9196]

what would be your choice for a distance antenna? in 2.4GHz

[@Vigilence]

+craig palmer The best he has for distance that i've seen is his biquad.

[@bnk28zfp]

+xMRavenx yes biquad yagi! is on my list !! also parabolic biquad!!

[@user-mz1ej5zv8g]

Сколько мм рефлектор

[@choppergirl]

8:10 - Wait a minute, why are you soldering the ground to the end of your tiny folded dipole. All you are doing is dumping your antenna energy into ground and shorting it out. I think at this point you are screwing up. A dipole antenna should not short out to ground, but have the antenna lead connected in the center of it to make a T.

[@egreojful]

I think, why your antenna is less effective because your calculation is not precise dude. The precise calculation for this is Yagi design frequency =2400.00 MHz Wavelength =125 mm Parasitic elements fastened to a non-metallic or separated from boom Folded dipole fully insulated from boom Director/reflector diam =4 mm Radiator diam =4 mm REFLECTOR 59.7 mm long at boom position = 30 mm (IT = 25.0 mm) RADIATOR Single dipole 56.2 mm tip to tip, spaced 25 mm from reflector at boom posn 55 mm (IT = 23.0 mm) Folded dipole 57.4 mm tip to tip, spaced 25 mm from reflector at boom posn 55 mm (IT = 23.5 mm) DIRECTORS Dir Length Spaced Boom position IT Gain Gain (no.) (mm) (mm) (mm) (mm) (dBd) (dBi) 1 49.6 9.4 64.4 20.0 4.8 6.9 2 48.7 22.5 86.8 19.5 6.5 8.6 3 48.0 26.9 113.7 19.0 7.8 9.9 4 47.2 31.2 144.9 18.5 8.9 11.0 5 46.6 35.0 179.9 18.5 9.8 11.9 COMMENTS The abbreviation "IT" means "Insert To", it is the construction distance from the element tip to the edge of the boom for through boom mounting Spacings measured centre to centre from previous element Tolerance for element lengths is +/- 0 mm Boom position is the mounting point for each element as measured from the rear of the boom and includes the 30 mm overhang.The total boom length is 210 mm including two overhangs of 30 mm The beam's estimated 3dB beamwidth is 52 deg A half wave 4:1 balun uses 0.75 velocity factor RG-6 (foam PE) and is 47 mm long plus leads FOLDED DIPOLE CONSTRUCTION Measurements are taken from the inside of bends Folded dipole length measured tip to tip = 57mm Total rod length =138mm Centre of rod=69mm Distance BC=CD=16mm Distance HI=GF=14mm Distance HA=GE=33mm Distance HB=GD=53mm Distance HC=GC=69mm Gap at HG=5mm Bend diameter BI=DF=25mm P.S. ...use copper for dipole.

[@inspectormore-anonymous1259]

These calculations arent even remotely close to where they should be, cant perform well

[@educatedmanholecoverbyrich8890]

I feel sleepy, yawn.

[@Hans_Ham]

please beware you use the word "actually" a lot. :-)