Equipment - Antennas. Homebrew antenna shootout. The Shootout My plan was to get relative performance measurements for various designs (including mine) of homebrew antennas for 802.11b (WiFi) wireless networks. To do this, I setup a wireless link and changed only the antenna- recording each antennas' performance under identical conditions.
I didn't compare them to a commercial directional antenna as my only one has a male connector and I don't have the right cable to hook it up yet. The contestants were (click on each for design specifications). The Performance Summary The results surprised me! In our test, the Flickenger Pringles can did a little better than my modified Pringles design. Both did no better than the Lucent omnidirectional. Of the waveguides, the Nalley's "Big Chunk" took top marks. With these results, I'm convinced that the waveguide design is the way to go for cheap wireless networking. The How To Build your own Tin Can Waveguide WiFi Antenna (Cantenna). Copyright 2003-2007 Gregory Rehm - All rights reserved.
Jason Hecker's Wireless Goodies. Helical Antenna for the 2.425GHz Wireless Networking Cards. Improved Dutch helix/helical for WLan. Improved Helical Antenna Design for 802.11b WLAN By: PA0HOO October the 17th 2002 To slow? Try these mirrors: 1) Dutch mirror 2) qsl Dutch English N.B: (Click here to jump to the improved PVC helix design) Preface The weekend of October the 17th 2002 we tried to set up an 802.11b WLAN radio link over just 200m. The radio path 'Direct sight', seen from the roof. As we had to bridge about 200 m, an external antenna was a must. Making your own path calculation Click here to calculate the distance you can bridge with a given antenna. The connections for the external antennas These pictures show how the external antenna connections were made. Our experience: PTFE cables don't melt while soldering. 'The Antenna'At the site of Remco PA3FYM we found the perfect construction description of a classical helix antenna, using today's materials.
The DisappointmentIt was very disappointing to find out that 'the thingy' we made wasn't performing at all. Detailed examination of the antenna design The design. Helical/helix antenna 2.4 GHz HOWTO. Wi-Fi 2.4GHz helical antenna you can build! Wi-Fi point to point helical 2.4GHz antenna you can build! A while ago I thought I'd try my hand at building a 2.4GHz Helical.
It was a sobering experience. The first design I tried to duplicate was Jason Heckers. I had read mixed reviews of his design. The outside diameter was 38mm. Note in this chart that 14db return loss = a minimum target SWR of 1.5:1, 18db = an acceptable SWR of 1.29:1. The actual return loss measurements I got were less than satisfying and, despite claims by others to the contrary, my creation actually resonated higher than the design target, an interesting twist I didn't expect.
Forging ahead I performed my gain tests. The best gain I was able to achieve with the helix pointed at the source was only 4 dB over the best half wave signal (4dBd) or 6dBi. You'll see in the photos of my finished design using 1" PVC that I also tried the Hecker "Wonder Stub" on the 1" PVC pipe form. Armed with this information my next prototype was based on the W0OQC design.
Copper Cactus J pole antenna - 2 metter 70 Cm dualband. 2 meter 70 Cm Copper Cactus J-Pole Antenna Home Brew Dual Band J-Pole Antenna Plans How to Build a Dual-Band Antenna for 2M/70cm? Your going to like this 2/70 Dual Band J-pole Antenna Plans known as the Copper Cactus Dual Band J-Pole, This home-brew j-pole antenna is easy to build and sturdy, While looking for an antenna project to build, I remembered seeing a Marine antenna called the Super J-Pole in the which had db gain over a quarter wave ground plane.
I have had very good results working with copper J-Poles, so I built my refined version of the classic J-Pole. I then added a short insulated section, the extra half wave of vertical length, and the needed half-wave matching stub. Here is a schematic drawing of the dual band j-pole antenna plans ( Click Here ) Word docDimensions j pole PDFPrint Instructions for this J-Pole Here is a nice calculator as well showing the proper lengths for a given frequency. Materials dual band j-pole antenna plans Simplify the Feed Point of the J-pole FAQ’s. 2 meters antennas - XE1BEF WEB PAGE.
Dotster Call Sales 800-401-5250 Hosting and Email Domains Website Services I Want To ... Start a Website Questions? Awards & Accreditations ICANN Accredited Registrarnameintelligence 2007 Users Choice AwardWebhost Directory Award Winner #1 In Shared HostingBest Budget Host Award by HostReview.com We Dot What You Want © 2016 Dotster. Low Cost Wireless Network How-To. Mozilla Firefox. Do-It-Yourself Wireless Antennas Update and Resource Center. Looking for an affordable way to increase the range of your wireless network? Trying to reach dead spots inside or outside a home, sharing a signal with your neighbors, or maybe for a point-to-point link with another network? Are you suffering from weak cell phone (photo) reception? You have come to the right place to extend the range of your wireless device, wireless gaming console, wireless network or connect to other wireless networks in your neighborhood. We look at hacking and modding a variety of wireless antennas and related hardware.
Make your own wireless antenna! We discuss the Pringles Cantenna, Coffee Can Antenna, Parabolic Reflector and Antenna Designs.