AB9IL.net

Long Range Wi-fi Dish Antenna

Disclosure: AB9IL.net is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program such that this site earns advertising fees by linking to Amazon.com. If you make a qualifying purchase after clicking a link on this website, the associate affiliated with this site may earn a comission at no cost to you.


#Advert: Supercharge your computing with a new ASUS motherboard.

New Features: Global Quick Tune Internet SDR List Improve Your Radio Knowledge at "YouTube SDR School"
Article Index --- click here to unfold ---
Newest Pages NEW: Trumpists Kicking the Hornets Nest
NEW: Introduction to Catbird Linux
NEW: Skywave Linux Updated to ver 4.1
NEW: i3wm: Using i3-ipc to Float Windows
How to Record from WebSDR and OpenWebRX Sites
Programmatic RTL-SDR Frequency Claibration
Public KiwiSDR Lists
Malaysia Airlines Flight MH17: Simply Mass Murder
The Anonymous Cathay Pacific Employee Letter to Hong Kong
For For Cathay Crews Crossing Borders With Electronics
Photo Gallery 9: The New Life Movement in China, 1944
E Pluribus Unum: From Many, One, Dammit
HFGCS Quick Tune SDR List
The Robert Mueller Iron Triangle Speech
A Rant About One Party Rule
Best OpenWebRX and WebSDR Servers
SDR School via YouTube
ADALM-PlutoSDR on Linux Systems
MOFO Linux: Defeating State Censorship and Surveillance
Linux: Distros, Code, and Nifty Software NEW: Introduction to Catbird Linux
NEW: Skywave Linux Updated to ver 4.1
NEW: i3wm: Using i3-ipc to Float Windows
Skywave Linux: HPSDR, WebSDR, and RTL-SDR ready to run.
Siduction Linux with the Cinnamon Desktop
Siduction Linux with the LXQT Desktop
Andy's Ham Radio Linux 15 and QtRadio
Booting Multiple Linux Disc Images with Grub2
Porteus Linux Hard Drive Installation
UPDATED: MOFO Linux - For Unrestricted Internet
Aptosid with LXDE
Asus EeePC 1215N with Linux
Autostart Tweaks for KDE3 and KDE4
Broadband Speed Tweaks For Linux
Fixing the Firefox 3 Rendering Bug
Linux on Solid State Drives
Linux Wireless Interface Driver Updates
Setting Polkit to Automount USB Devices
Sidux with LXDE
Fixing Skype Inverted Video
SLAX Remix - kernel upgrades
Flash Drive Linux - Introduction
Flash Drive Knoppix 5.3 - Part 1
Flash Drive Knoppix 5.3 - Part 2
Flash Drive Knoppix 6.0 - Part 1
Flash Drive Knoppix 6.0 - Part 2
Flash Drive SLAX - Part 1
Flash Drive SLAX - Part 2
Flash Drive Bluewhite64 - Part 1
Flash Drive Bluewhite64 - Part 2
Flash Drive Linux - Basic Customization
SLAX Customization - Part 1
SLAX Customization - Part 2
Bluewhite64 Customization - Part 1
Bluewhite64 Customization - Part 2
Long Range Wi-Fi Basics of Long Range Wireless Networking
Linear Focus Parabolic Wi Fi Antenna
High Gain Wi Fi Dish Antenna
High Gain Helical Wi Fi Antenna
High Gain Yagi Wi Fi Antenna
High Power Wireless Adapters
Wi Fi Extender Antenna for Routers
Belkin F5D7050 External Wi Fi Antenna
Linksys WUSB54GC External Antenna Mod
Compat Wireless Linux Drivers
Installing WPA_Supplicant for Wi-Fi Security
Linux Wireless Interface Driver Updates
Linux Wireless Interface Driver Support
NetworkManager and Consolekit
RT73 Wireless Drivers for Linux Kernel 2.6.27+
RT2860 Wireless Drivers for Linux Kernel 2.6.27+
Radio: Amateur Radio, Aero Radio, Shortwave, etc NEW: Programmatic RTL-SDR Frequency Claibration
NEW: Public KiwiSDR Lists
NEW: GHFS Quick Tune SDR List
UPDATED: Best OpenWebRX and WebSDR Servers
UPDATED: Skywave Linux: HPSDR, WebSDR, and RTL-SDR ready to run.
CubicSDR on Debian, Ubuntu, and Linux Mint
Dump1090 for Linux Mint 17.1 and Siduction 2014.1
Software Defined Radio - An Introduction
QS1R Direct Sampling SDR
Chaining SDR Audio Interfaces
FLEX-6000 Direct Sampling SDR
UPDATED: RTL2832 Software Defined Radio
WebSDR Digimode Reception
Enabling FLASH in Jack Audio
Realtime Software Audio Processing
Liberation Technology MOFO Linux - For Unrestricted Internet
Veracrypt Encryption for Linux
Veracrypt Encryption for Windows
Using Google Within China
Popcorn Time and Flixtor for Uncensored Streaming Media
DNS Encryption using DNSCrypt
Galaxy Nexus Privacy and Robustness Enhancements
Galaxy SIII Privacy and Robustness Enhancements
Flash Drive Encryption for Linux
Flash Drive Encryption for Windows
Multihop VPN Connections for Strong Internet Privacy
Open and Free DNS Server List
OpenVPN Cloaking against Deep Packet Inspection The Serval Mesh Phone Project
Skype's Robust Security
Man in the Middle Wireless Security Risks
Wireless Security and Surveillance
Digital Audio Adjusting Audio Dynamics in VLC
Backing Track Prep Guide
Ipod Music Processing Guide
How To Record Record Live Music Performances
Realtime Software Audio Processing
Chaining SDR Audio Interfaces
Aerospace Radio, Aviation, Pontification, and Opinion NEW: Trumpists Kicking the Hornets Nest
NEW: The Anonymous Cathay Pacific Employee Letter to Hong Kong
NEW: For For Cathay Crews Crossing Borders With Electronics
NEW: E Pluribus Unum: From Many, One, Dammit
NEW: HFGCS Quick Tune SDR List
NEW: The Robert Mueller Iron Triangle Speech
NEW: A Rant About One Party Rule
Captains Authority Versus Autocratic Airline Management
Malaysia Airlines Flight MH17: Simply Mass Murder
Malaysia Airlines Flight MH370 - A Media Circus
High Gain Air Band Antennas
Apollo Unified S Band Communications
Chinese Anti-Stealth VHF Radar
Oceanic Communications - Procedures, Equipment, Voice and HFDL
Boeing 737NG Radio Equipment
Boeing 767 Radio Equipment
NAOC-TACAMO Monitoring
My Flight on 9/11
Joshua Chamberlain's Leadership Tips
Special Operations Forces Truths
TWA 800: Just Give Me Some Truth
Photo Gallery Aviation Photo Gallery 1: Snapshots From My Journeys
Aviation Photo Gallery 2: On the Road With ATA Airlines
Aviation Photo Gallery 3: More ATA Airlines
Aviation Photo Gallery 4: Southwest Airlines is the Borg Empire
Aviation Photo Gallery 5: Starting Over, Moving On...
Aviation Photo Gallery 6: More Viva Macau
Aviation Photo Gallery 7: Mainland China Airline Flying
Aviation Photo Gallery 8: Chinese Smog and Fog
NEW: Photo Gallery 9: The New Life Movement in China, 1944
Broadcasting BBC Radio Blooper - Adolf Merckle
TV DXing the World Trade Center
New York TV after 9/11
Live Music Recording Adjusting Audio Dynamics in VLC
Backing Track Prep Guide
Ipod Music Processing Guide
How To Record Record Live Music Performances
Radio Poetry and Arts In Distress, by David Wagoner
Just A Radio Operator, by Robert A. Wallace
Radio Circuit Modifications ATS-909 Modifications
ATS-909 Manuals
ATS-909 Alignment Procedure
ATS-909 Alignment Spectrograms
Very Low Frequency (VLF) Radio Internet Based VLF Radio Listening
Windows Tips Windows Performance Enhancement Tips
A Faster Windows 7
Windows 7 SSD Setup

THIS INEXPENSIVE WI-FI DISH ANTENNA OUTPERFORMS ALL OTHERS!

Presented here is a project showing how to convert common satellite TV antennas into high performance wifi dish antennas. A large 2 or 3 meter diameter wifi dish can provide 802.11 connections to access points dozens of kilometers away. The path must be line of sight - free of hills, buildings, or other obstructions. When used with a high power wi fi adapter this kind of antenna is fantastic. Satellite dishes are easy to convert into wifi dish antennas. The essential change is replacing the satellite TV feedhorn with a modest directional wifi antenna. None of the manual "curve making" of scratch built parabolics is necessary. To successfully convert a dish for wifi use, you need a C or Ku band reflector in good condition and basic tools for measuring, cutting, and bolting parts.

Note that if your goal is to get wireless internet from another location and use it indoors, you should instead consider using a wireless bridge. If you want to provde strong wireless internet coverage to an area, but cannot provide a fiber optic or ethernet cable to your wireless router, again consider using a wireless bridge to substitute for the unavailable cable, and connect the bridge to the router. This is a better solution for situations such as:

  1. Providing internet connectivity from one building to users in a remote house or office.
  2. Providing internet connectivity from one highrise building to another across town.
  3. Providing internet connectivity from an onshore location to users on an island.
  4. Sharing connectivity between two locations which can't be linked by cable.

Obtain an undamaged parabolic reflector designed for C or Ku band satellite television service. These are now inexpensive and abundant. The wifi dish pictured above was built from satellite TV gear discarded by a local resident. Similar reflectors can be found in thrift stores, flea markets, and other habitats of electronic scroungers. Seek moderate to large reflectors (at least 76 cm or 30 inches diameter), since these will provide greater gain and directivity. Again, make sure the reflector is in good condition and free of dents! If it is merely rusty, that is okay. Use sandpaper to remove the rust, then repaint the reflector.

#Advert: Go parabolic with a fabulous Prostar laptop.


huge high gain wifi dish antenna


Satellite dish converted for long-range wi-fi.

BUILDING A FEED FOR THE WI FI DISH ANTENNA

For very long range wireless networking, I have used a short 5 turn version of the helical wifi antenna, left hand polarized, with an 80 cm parabolic reflector. Signals were about 26 dB stronger than on a simple dipole! Mounting the helical wifi antenna was a matter of installing an angle bracket and bolting the helical wifi antenna into place at the dish focal point. It was necessary to slightly bend the bracket to aim the helix directly into the dish.

high gain helical wifi booster Antenna, high gain parabolic wifi antenna,  wifi dish


Short wifi helix feeding a long range parabolic wi-fi
antenna.!

Another wifi dish antenna feeder option is a 3 or 4 element yagi wifi antenna mounted at the focal point and aimed into the reflector. Yagi feeders for wifi dish antennas are simple to construct, durable, and effective.

Note that a wifi biquad, biquad, or "cantenna" waveguide feed would work well in a wifi dish antenna, and would have a slight polarization advantage over a helical - but would lose more signals in rain and not work as well with signals reflecting off of buildings, hills, vehicles, etc. The biquad wifi antenna pictured below was built out of junk parts one afternoon, and enabled very good long range 802.11 connections on its own. Mounted at the focal point of a surplus DirecTV dish, it provided full-scale signals from otherwise weak access points.


high gain helical wifi Antenna, high gain parabolic wifi antenna,  wifi dish antenna
A biquad made from junkbox parts.
It was an excellent wifi dish feeder!

high gain helical wifi Antenna, high gain parabolic wifi antenna,  wifi dish antenna
A large wifi dish, using an old
C-Band TVRO reflector.

high gain helical wifi Antenna, high gain parabolic wifi antenna,  wifi dish antenna


A small wifi dish, using a cantenna feed.
The mount needs to be inverted!

high gain helical wifi Antenna, high gain parabolic wifi antenna,  wifi dish antenna


Another small wifi dish, using a biquad
feed.

MOUNTING AND AIMING THE WI FI DISH ANTENNA

Installing a wifi dish antenna is more complex than it initially seems. Consider how the antenna will be used: for a fixed point-to-point link, scanning the area for usable free hotspots, or a portable link back to one's home access point? A fixed antenna can be aimed and bolted into place. A steerable or portable dish needs a means of securely mounting and aiming (motorized or by hand).

Offset feed antennas originally designed for modern Ku band digital TV require special mounting and aiming technique. The best method is to invert the mounting hardware and angle the dish to about 75 degrees for peaking signals on the horizon. In azimuth, aim directly at the desired access point, but in elevation, offset about 37 degrees. The webmaster's antenna stands atop a vertical length of 2" schedule 40 pipe. A prime focus wifi dish, on the other hand, can simply be mounted on a pipe and aimed directly at the signal source.


huge wifi dish antenna aiming

Offset versus prime focus wifi dish antenna aiming.


These wifi dish antennas are very directional! It is common to scan an area and see weak signals just barely detectable when out of the beam. As the antenna is aimed directly at the distant access point, the signal strength will jump up considerably - perhaps to full scale. High directivity associated with wifi dish antennas is good: interference from off center stations is reduced and faster broadband connectivity is possible for distant access points.

All of the parabolic wifi antenna feed types discussed here are intended for connection to USB wireless adapters. Yes, extended range connections are possible with a simple USB wifi adapter mounted at the reflector's focal point, but for maximum performance, the adapter must have some kind of directional antenna directly feeding the RF circuitry. Make it easy, and find a wireless adapter with a removable external antenna. Then, unscrew the original and replace it with the yagi, helical, or biquad homebuilt antennas. Mount this at the reflector focal point and go for those cross-town or cross-county links.

As to getting the wifi data into the computer, use USB extension cables for the shorter runs. Powered USB hubs can be used for longer runs when the computer is 15 or 20 meters away from the wifi antenna. One user actually mounted the antenna outdoors, on a rotator, and connrcyed three sets of hubs and USB extension cables to reach is office computer. He then had access to five full strength wireless hotspots and was never without free (as in beer) broadband. In another case, a farmer set up an attic mounted indoor parabolic, by a window, for wifi access to another of his buildings. He used two powered USB extensions (essentially a data repeater built into the cable) to reach his desktop system and have wireless broadband.

Good luck, and may you enjoy lots of long range wifi connections!



Tags: Wireless Dish antenna, Wi-fi dish antenna, Parabolic Wifi Reflector, Recycled Ku Dish Wi-Fi

©2005 - 2020 AB9IL, All Rights Reserved.
About, Contact, Privacy Policy and Affiliate Disclosure, XML Sitemap.