3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

Can someone Explain to Me how Wifi Antenna Extenders work?

Could someone help explain to me How wifi antenna extenders work?

To me It seems like you would be able to send packets to the network, but it wouldn't be able to send them back, making the TCP/IP Handshake Incomplete.

I am Talking about having a USB wifi Adapter with a Pringles can antenna or something like this: (http://www.instructables.com/id/Uni-Directional-WIFI-Range-Extender/), and using it to connect to a Starbucks or something.

I get that the metal reflects the signal, so that it is strengthened, and can be pointed towards something, What I Don't get is how once you send the signal, how does the signal get back to you when your out of the routers range?

The pic is a rendition of what I think should happen, while using a wifi-extender antenna trying to connect to another place's internet that would usually be out-of-range.

TCP handshake.jpg
3 answers
Aug 30, 2009. 5:23 AMfrollard says:
As steve says - it adds at both ends. A higher GAIN antenna will resonate better at the required frequency - and both send and receive signals better. Long story short it extends range. :D BOOSTERS amplify the amount of signal being transmitted. They only boost in the sending direction - so you need a booster at BOTH ends to have a true gain. One problem with the 'signal' display on your windows networking dialogue might (*this is just fishing out there, but its usually the case) only show the send OR receive - not both, so when you have seemingly 'excellent' signal, you really dont. More advanced interfaces show the decibels of signal in, and what the endpoint is reporting your signal is being received as.
Aug 30, 2009. 2:54 AMsteveastrouk says:
Antennas are NOT one way devices. If the antenna has a certain gain, that's BOTH ways !

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!