Biquad Yagi 2 4GHz Wifi Antenna #47

surely it would be easier to fix elements to boom if you made each element in one piece.
have you tried making this with each element of 4 diamonds?
what is the maximum number of elements per antenna you would recommend for maximum gain?

do you test your antennas for swr? Whilst you show on a graph how good they are, this surely only refers to reception which is far less affected by poor swr than transmitting. So whilst you can see lots of access points, if you had the security codes of your neighbours wi fi, would you actually be able to connect and not just receive but also TRANSMIT?

This hand-held thing looks awesome.

I don't get why on some Yagi antennas the parasitic elements are connected to each other and on some they are not. Does it make no difference?

What do you think of that eBay Yagi? I have one and don't see how the spacing (constant) and boom/element sizing (way too big) is at all appropriate; nothing like the results I get from Yagi design tools.
(On top of that, the one I received had been mangled internally in construction, shorting the coax with a fixing screw. Also no balun; I rebuilt it but it still has very poor performance.)

I got one of those antennas that is shown in the video, the ebay one, and I was wondering if there is something one can do to make it better?

it's called twin quagi..

This is just SUCH a good video. Clear instructions and every stage filmed with the viewer in mind. Thank you.

Nice description and assembly.....

It is possible change its to a 2.6ghz 4g antenna? Thanks

such a good video.............but one thing dear Andrew.....what is formula behind these milimiter calaculations...i am very much interested in knowing how these calculations are made....any guide formula...equations.....plzzzzzz plzzzzzzz let me know that

Instead of using an aluminum plate to solder on (which steals a lot of heat from your iron) gut a crappy or broken toaster and use the mica board sheets that insulate the elements. It is brittle and fragile but if you lay it down on a solid surface it will be solid enough to solder against and it won't steal the heat from the iron so your solder will flow better and faster.

i might still be at easy Grasshopper level, but... How come on this one you didn't use a square reflector the biquad normally uses?? i guess i get the point of the bow ties as elements but if you built a BQ and used just another bow tie for a reflector for the driven element even if adding the screen would it be any better the biquad always wins hands down i was excited to see the results not a Fail but i had such higher hopes lol do you think itd make more sense to maximize and stick it on a parabolic maybe drop the back reflector and use the dish as one instead maybe Teach me Yoda Teach me I must learn to use the Force of Wifi

does copper work better than steel for electrical properties?

Hola pregunta que medidas le tengo que dar para hacer una antena para 70 Centímetros. gracias

Why?
Gr,Paul.

I'd like to build one for 2.3 Ghz frequency as my ISP use this frequency for 4G LTE. Can anyone help me to redesign this antenna for that frequency? Any help is very appreciated

Shut up and take my money!

that alph card at the end did you modify it at all?

What is he gage of the copper boom? KD2PMI

Jason Statham??

You've helped me save so much money pal. Cheers

Good day Andrew, I need to build a 915mhz 1/4 dipole antenna what would be the measurements? It's going on a 3dr telemetry radio module to be use alongside a APM 3.1 flight controller. Thx in advance

Nice video! Can anyone tell me if a yagi has better reception than a parabolic grid? "I live on a hill in the woods with no line of sight". I have 2 different internet systems. 1 is a Verizon Cantenna (works good) and another AT&T with the grid and its awful. The AT&T tower I believe is 1/2 mile closer than the AT&T. I desperately need a solution and don't quite understand what is in that Cantenna that causes the reception to be so much better? Any thoughts would be extremely great full.

Excellent video. Very interesting. The final version certainly worked well. What dBm % did the earlier versions pull ?

I have only done single element biquads but they do work well, less directional.

I've also played around with fractal antennas a lot, but not in the 2.4 GHz band. I wonder if you could use the fractal element shape in a biquad ?

Cheers Rob

Excellent Video as always :), I'm going to try and make one for 223.5 MHz, it will be for Simplex and distant repeater work. I'll edit later if this works out well and it bridges the gap! 73 de KE0ANY ✌

Why all directors are of different size? Why spacing between them is unequal at many constructions???

quick question, is there anything you can use other than the copper clad cb? Not really very available for me

Thank you very much Andrew . Very well explained and accurate . I will build one . I was wondering if silver leaf on the copper would help ? A little more expense . But , maybe more dbi ?

as you tryed using mesh on the reflector and not having improvements you didnt test the front/back result, a mesh or bigger reflector could do some more blocking of signals coming from the back of the antenna and can be usefull, even on shortwave bands that works out

how can i build a 5ghz wifi directional antena? to use whit my Rocket M5.. thank!!!

thank @andrew mcneil so muchs

Super...
Is it necessary to link all the elements through the boom or can I use a non metallic boom?

hello kan i use this antenne in Benidorm sp

The wire has width, so is the spacing between elements measured from element to element or from center of element to center of element.

if i make this antenna with 455MHz frequency, is it work? i mean is the solder strong enough to hold that wire?

Hi ANDREW. When you did the test with the biquad at what distance was the A.P from the experiment?.

MÀy nói nhảm nhiều quá.

how many decibels is 80% ?

I have been watching alot of videos about DIY antennas but I am so confused about Yagi antennas. Alot of people build them out of a piece of PVC or some other non conductive material but they say they are building them for the same purpose as Yagi antennas with conductive booms.


What is the difference in using a conductive vs a non conductive boom and which is better?

Is it possible to attach a USB cable instead of coax cable? If so where do I place the extra wires?

Well done.

The size of the boom width can be made the same

The size of the foot element on the boom

How nany dBi on this antenna?

230mm is 9 inches

Hello Andrew, I like your antenna with your attention to detail. Am wondering if you could make an antenna for the TV with a VHF UHF frequency with lots of gain ??? Drop a line with your thoughts fella.

Are this antenna any good for long range FPV?