Parabolic or dish antennas
This is where the real power is! Parabolic dish antennas put out tremendous gain but are a little hard to point and make a connection with. As the gain of an antenna increases, the antenna’s radiation pattern decreases until you have a very little window to point or aim your dish correctly. Dish antennas are almost always used for a point to point system for long haul systems. The Parabolic Dish antennas work by focusing the power to a central point and beaming the radio’s signal to a specific area, kind of like the adjustable reflector on a flashlight. These antennas are highly focused and are the perfect tool if you want to send your signal a very long distance.
Tag Archives: wifi
Dirt Simple Wi-Fi Signal Booster for Free
Dirt Simple Wi-Fi Signal Booster for Free | Hack N Mod.
You can make this wi-fi parabolic antenna for your router without breaking a sweat.
- Manila file folders
- EZ-12 Templates for the antenna from Freeantennas.com
- Adhesive
- Aluminum foil
The parabolic antenna is nothing but a focusing device cut out from the stiff manila folder and backed by a layer of aluminum foil on the back for the reflective surface. The exact cutting pattern is aided by the EZ-12 template.
Click here for templates.
How To Build an Open Source Wi-Fi HotSpot with DD-WRT
If you’ve ever tried to set up a Wi-Fi HotSpot, you may have already discovered that you need more than a broadband Internet connection and wireless router or access point. Off-the-shelf routers and APs don’t provide the “captive portal” function needed to either authenticate users or just let them know who to thank for their free connection. Nor do they usually provide other features such as billing support, bandwidth limiting and user isolation. To obtain hotspot-specific features and capabilities, you must use a device commonly referred to as a hotspot gateway.
via How To Build an Open Source Wi-Fi HotSpot with DD-WRT – SmallNetBuilder.
The six dumbest ways to secure a wireless LAN
Summary: [Updated 4/2/2007 – follow-up article here] For the last three years, I’ve been meaning to put to rest once and for all the urban legends and myths on wireless LAN security. Every time I write an article or blog on wireless LAN security, someone has to come along and regurgitate one of these myths. If […]
SputnikNet Express Free Hotspot System
Get started with SputnikNet Express, the free and easy web-based management system for single-site hotspots. Click on the chalkboard icons below to see more details.
WiFi Protected Setup Flaw Can Lead to Compromise of Router PINs
WPS is a method for setting up a new wireless router for a home network and it includes a way for users to set up the network via an external or internal registrar. In this method, the standard requires a PIN to be used during the setup phase. The PIN often is printed somewhere on the wireless router or access point. The vulnerability discovered in WPS makes that PIN highly susceptible to brute force attempts.
via WiFi Protected Setup Flaw Can Lead to Compromise of Router PINs | threatpost.
“I noticed a few really bad design decisions which enable an efficient brute force attack, thus effectively breaking the security of pretty much all WPS-enabled Wi-Fi routers. As all of the of the more recent router models come with WPS enabled by default, this affects millions of devices worldwide,” Viehbock said in a blog post.
In-Flight Wi-Fi Company Gogo Files For $100 Million IPO
Since Gogo launched in-flight Wi-Fi connectivity in 2008, the company has provided more than 15 million wi-fi sessions to more than 4.4 million registered unique users. Currently, Gogo has contracts to add wi-fi to another 525 planes. Gogo-equipped planes represent approximately 42% of the company’s revenue for the nine months ended September 30, 2011. The company’s earliest contract, which last for ten years, expires in 2018.
via In-Flight Wi-Fi Company Gogo Files For $100 Million IPO | TechCrunch.
FCC green lights first white space broadband device
FCC green lights first white space broadband device
The authorized model in question is the KTS Agility Data Radio. “The ADR is a software-defined radio that offers unparalleled flexibility,” KTS literature promises. “It can access more spectrum and support more throughput than any radio product on the market today.”
Agility Data Radio
The black 3.5 x 5.0 x1.4-inch machine weighs almost three quarters of a pound, can take on channel sizes up to 5MHz, and services data rates up to 4Mbps.
Biquad Antenna Construction
This page details the construction of a biquad antenna. The biquad antenna is easy to build, and provides a reliable 11dBi gain, with a fairly wide beamwidth.
Tomato Firmware: Increased Transmit Power Does More Harm Than Good?
I had turned the routers up to 80 mW and the problem was still occurring. Upon some research I found that as the Transmit power levels of the routers increased, so did the radio noise produced by the routers. I decided to turn the routers back down, to a level lower than when I first began to administer the network. After this change, users noticed an immediate improvement in the quality of their wireless connections. Everything was (and still is) running stable. The users are no longer losing Internet connection and are maintaining proper network speeds.
via Tomato Firmware: Increased Transmit Power Does More Harm Than Good? | Techerator.
I’m seeing the same thing with the Tomato firmware. The firmware is nicer than Linksys but I thought increasing the power of this router would increase the range but I suppose it’s more complicated than that.