With a Once upon a time in college without money for my own broadband, I shared it from a friendly neighbor a thousand or so feet away in another community. When I was a kid maybe ish? Dad taught us how to graph parabolas in Lotus and we printed a couple wider ones and bent sheet metal into the shape of the graph.
Then he taught us how to find the focus point by drawing lines and calculating reflection angle and we taped a microphone to the focus point. How would the shop wifi be able to receive his return signals though?
Unless he had directional wifi antenna at the shop pointing back at his apartment? Well, the parabola amplifies the signals like how a cone could amplify your voice if you speak through it, with the constraint of narrowing where the amplified signal is directed.
If you look at all the bashed and distorted satellite dishes in the world that sitll manage to receive a signal you will realise that there is a fairly large margin of error in a parabolic radio reflector. Light reflection in a slolar cooker is another example of close enough is good enough.
The loss of gain associated with ball-parking the location of the antenna in relation to the reflector is offset by the gain associated with the surface area of the reflector relative to wavelength. There are many directional gain antenna designs that utilize non-parabolic reflectors. There are box-reflectors, corner reflectors… even the common Yagi or log-periodic is an example of this. But sometimes imperfect is good enough. Your computer will be using the same wifi link for both upload or download.
There really should not be a performance difference. I think…. Had a similar issue, but no direct LOS. But i have to agree with you guys, any big piece of metal behind the dongle might at least reflect enough to get the antenna to be half space directional. I usually can connect to the router that is about m away using omnidirectional antenna.
I have an Alfa with that huge omni antenna. Your WiFi range depends heavily on the type of antenna you are using. Omnidirectional antennas radiate a full degree radius. Directional antennas radiate that same amount of energy into a stronger signal. Are you looking to extend the range of your current WiFi networkWhile there are many ways you can fine tune your home Wi-Fi system without building additional hardware, there are simple DIY solutions…. Long Range Yagi Antenna 19 Element 2.
Easy build yagi that gives at least 15dbi. A long-range antenna for 2. In this video, I will show you how to construct a dual-band long-range repeater for 2. In this Instructable, I make a battery-powered portable long-range 2. It can also be used to find open WiFi access points on the go. It is working pretty well. Glue full lengthed popsicle sticks on top of the antenna.
The antenna should become mechanically stiff. Then rip the paper template of the antenna. This is the most difficult part and depends on the electronic hardware you have.
The basic idea is that you need to solder a wire between the WiFi board's RF output and the driven element of the yagi antenna. Those with external antennae, like mine, are easier to connect because you are just replacing the external whip antenna with the Yagi.
Those with internal antenna may need to have their on-board strip antenna modified as illustrated in the pictures here. You need to slightly experiment in this case. I have tried soldering a coax to my board's antenna connectors and the two ends of the yagi's active element loop but it did not work in my case. I have no explanations why that did not work, but other DIYers that have built Yagi antennae connected their antenna in this manner.
In my case, I just connected a single thin strand of copper wire between the active element of the strip antenna and one end of the loop of the driven element. Please read the annotations of the pictures for more details. The performance was pretty spectacular for this easy to build antenna. I was able to see the WiFi of a hotel that was 2 miles away from my home. The most difficult part was connecting the antenna to the USB modem. Okay well I read through the entire post and I saw many things that made a lot of sense, also saw a lot of unnecessary flaming, but I do have a few comments to make.
Right off the bat the one individual that asked about having his modem in the basement with a rotating antenna on the roof needs a reality check. Take the dongle apart and connect a USB extension cable to it and mount it directly on the antenna assembly. Paper clips vs copper, at this frequency it's not going to make much difference, however the specific model was generated using 14awg copper.
Someone said glue it all to cardboard then cover it with more cardboard actually a strong and stable design, original author said build around popsicle sticks wooden , both are subject to absorbing moisture from the air and either can have a poor dielectric constant, I would suggest some kind of plastic they make popsicles with plastic sticks. The lengths of the elements, the spacing between them, and keeping them all in the same plane and parallel to each other is the most important consideration.
If you use the folded dipole make sure the folded part is perpendicular to the plane of the rest of the antenna and use ohm twin lead to connect to the dongle, but your SWR will probably be much higher, reducing your effective gain and possibly resulting in early failure of the dongle. Horizontal vs vertical, after you have your antenna connected and have connected to some network you can try rotating it about its horizontal axis to see if you can get a better aspect on the other antenna more bars.
All in all though good job to Biotele, it's cheap, it's easy, and if done right will provide excellent results. I did not build this antenna, but I built 2 antennae very similar before reading this post, My son and I live almost 2 miles apart and either of us can stream p movies from the other's house during a thunderstorm. Reply 1 year ago. Was the setup with your son line of sight, or was there any foliage between you? Was this able to extend the original wifi network to the second location?
Reply 6 years ago on Introduction. Reply 7 years ago on Introduction. Thanks upon this project. For my recommendation, I would advise you to use a usb to Ethernet adapter then feed your router with Ethernet as usual. I'm a ham radio operator and have build many yagi antennas and am going to build this one. Here's a suggestion. Then you do not need to print out the guide. Also realize there are factors outside your control so getting accuracy to about 1 mm is good enough for element spacing and length.
If you aren't that accurate, it will just decrease the gain some, but the antenna will still work much better than an omnidirectional one. Question 1 year ago. I still dont get where to put the wires on the natena I have USB wifi with external port for antena, I have the coaxial cable Bit did not see ani diagram where to solder them on the antena..
May be I miss something because of poor english, so please someone to help with a simple diagram on Paint. Most antennas can be removed from WiFi cards, making them easy to lose. With a few household supplies, you can make an effective replacement antenna that can get you by until you can purchase a replacement.
If you are having range issues, you can create your own directional antenna that can significantly increase the distance of your wireless connection. To make a WiFi antenna using a paper clip, start by straightening out the paper clip and cutting it so it's 61 millimeters long. Then, about 19 millimeters away from one of the ends, bend the paper clip at a degree angle. Next, take the ink cartridge out of a ballpoint pen, and cut off millimeters of the tubing that contains ink.
Once you've done that, slide the cut-off piece of tubing over the bent part of the paper clip, and gently heat it with a lighter to make the tubing shrink. Finally, insulate the antenna with electrical tape before inserting it into the antenna port.
To learn how to make a directional antenna, scroll down! Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account.
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