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Outdoor Long Range Wi-Fi Networks 2.4 and 5.8 GHz Access Points, Clients, Repeaters Bridges
WiFi Antennas and Antenna Mounting Hardware
Business Class, 3G, DSL Bonding and Dual Wan Routers
R.V. Parks, Hotels
Marina and Marine Solutions
In-Building and MESH Solutions
WiFi Systems 5.8 GHz
Hybrid WiFi Systems 2.4GHz and 5.8GHz
900 MHZ WiFi Backhaul for NON LINE OF SIGHT
IP based WiFi Security Cameras
Network Access Managers/Billing Systems
Weatherproof NEMA Enclosures
WiFi Accessories, Cables, Splitters, Combiners, POE Injectors, Power Supplies
Cellphone Signal Booster - Cellphone Repeater
Ultra Long Range Cordless Phone System - Export Only.
Cell Phone Signal Jammer
DISCOUNTS, REFURBISHED EQUIPMENT AND SPECIALS
special shipping & misc. charges
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Downloads, Updates, Etc.
We provide our clients with several programs for wifi equipment setup, examples of various setup scenarios and help with installation of equipment. Please review the listing that best matches your needs.
AP LOCATOR PROGRAM FOR WIFI EQUIPMENT
MESH NETWORKING EQUIPMENT USER GUIDE
UPGRADES & USER MANUALS TO OUR WIFI EQUIPMENT
If you already own our equipment and want to see if there is a firmware upgrade available for your equipment, please compare your version to those available below and upgrade if you need to:
To download the CAP Ceiling Mount Access Point New User Manual, Click Here
WIFI SETUP POWERPOINT PRESENTATION
We have designed a PowerPoint Slide show to help you with the setup and installation of your new wifi equipment. If you already have PowerPoint installed on your computer you can click on the PowerPoint Presentation Link and SAVE it to your desktop. If you do NOT have PowerPoint installed, you will first need to download the PowerPoint Presentation viewer.
The presentation is interactive and has sound, so please view the download as a Presentation. Your comments and feedback will help us improve this for the benefit of all our clients.Download the PowerPoint Presentation Viewer by clicking hereDownload the PowerPoint Presentation by clicking hereHow Many Connections Can A Wireless Router Handle?The question of how many literal connections a wireless router can handle is anywhere between 50 and 253 depending on manufacturer. (Quick question answered: It’s not 255 because the router has to assign itself a few IPs.) The question of how many usable simultaneous connections is a different story altogether because that number is drastically smaller. When I say usable simultaneous connections I’m referring to how many connections the wireless router can handle before your connectivity speed gets so slow it’s unusable. Examining network requests per connectionWhile it’s true each computer connected wirelessly uses a single IP address, that connection has multiple network requests dependent upon how many apps that use the network. If you examine a single computer on the network and how many requests it makes, this is how it usually breaks down:
You might be saying to yourself “Okay.. that’s just two apps. No big deal, right?” Wrong. A web browser can balloon up to as many as 30 or more network requests at any given time. When you visit a web site, the primary request is made from that dot-com. But maybe that dot-com is requesting images to be displayed for advertisements. That’s 5 to 10 more requests right there. And maybe there’s video on the site. That’s a binary transfer that adds a few more requests. And maybe you have add-ons/plugins in your browser. They usually make network requests as well. An instant messaging app is even worse because it’s keeping a consistent connection with the server(s) it connects to for chat. And if the IM app has ads displayed in it (Yahoo! Messenger, Windows Live, AIM, etc.), even more network requests are made. So just from a browser and instant messaging app alone, this can lead up to 40 or 50 requests at any given time depending on what you’re doing on the internet. How to view the requests? In Windows you do this via the NETSTAT command line application.
You’ll see all the apps that are currently making network requests and what they are requesting. Network requests will be listed as ESTABLISHED or CLOSE_WAIT for most instances. Crunching the real numbersLet’s say for the moment all the computer boxes on the network are making really high network requests and each box uses 50 at any given time. Even though the requests are small in size, when added up this can lead to network “bottlenecking” where the connection “chokes”. If you’ve got 4 boxes making 50 requests, that’s 200 requests. Will the network slow down at this point? Yes. This is especially true if you have a basic cheapo wireless router that can’t route very well. How many usable simultaneous connections can you have at this point? Probably not more than 5 before things really start to crawl. What can you do to loosen the bottleneck?The first obvious answer is to buy a better wireless router. If you want one of the best names in routers, that would be Cisco. And yes they do cost a crapload of money. The second answer is to decrease the amount of network activity per box. Tips on how to decrease network activity: 1. Don’t use a from-service IM client. Instead of using Yahoo! Messenger, Windows Live Messenger or AIM, try some of these (asterisk denotes multi-service). None of them make requests to advertising servers and you can turn off all the “goodies” which will decrease the traffic. 2. If using an e-mail app, increase the time between check intervals. If using an e-mail app like Microsoft Outlook, Windows Live Mail, Mozilla Thunderbird or the like, it’s making network requests every few minutes. You can either just close the app or set the intervals to be longer, such as every 10 to 20 minutes. 3. If not using the browser, close it. If the app isn’t running it’s not making network requests, plain and simple. 4. Examine if you really need certain plugins/add-ons in the browser. Browsers like Firefox make it easy to install plugins but this can lead to network choke if sharing a wireless connection when you have too many of them installed. Examine what you need and what you don’t. Obviously the best way to run Firefox is “bare” if network speed is a concerned on a shared connection. 5. For computers idling on the network, shut them down when not in use. Other than buying a new router to accommodate for your traffic, this is by far the easiest thing to do because it doesn’t cost anything and all you have to know how to do is shut off a computer when not in use (duh). If you have issues with Near Line of Sight, or Non Line of Sight, here are some thoughts to consider -
NON LINE OF SIGHT WI FI CONSIDERATIONS
There are several unlicensed wi fi frequencies that are available in the US – 900 Mhz,2.4 Ghz and 5.8 Ghz For non line of sight wireless connections, there are tradeoffs that must be taken into consideration when selecting the right frequency for your project. 900 Mhz – Some say offers the best non line of sight penetration, but the least amount of end user throughput. Ham operators in this frequency say this is the least effective for tree penetration. 2.4 Ghz – Obstacle penetration is a problem is this frequency and most often requires some line of sight to be effective 5.8 Ghz – Conflicting results indicate no clear consensus regarding the effective use of this frequency for wireless transmission. There will always be some loss in throughput due to distance (free air loss) and obstruction type/density. Essentially, the best method for tree penetration is to use a transmitter in any frequency that has OFDM (orthogonal frequency division multiplexing) capability. This uses wider channels for better penetration. Certain types of antenna polarizations also offer better penetration. These can be circular or multi polarized antennas.
Consideration must be given to the tradeoffs between throughput, signal/noise ratios and antenna gain when selecting a setup that has some or near line of sight. It is often a trial and error scenario to arrive at the best solution for the project.
Wi Fi Security Notes:
Folks in the hospitality industry are often concerned with security. Here is a copy of an article that may make more sense to you -
Insecure WiFi systems installed at hotels across the UK could be hacked.
Following its claims that WiFi is no longer a secure method of connection last week, Global Secure Systems has warned that insecure WiFi systems installed at hotels across the UK could be hacked with embarrassing consequences, as has happened with the high-end Thompson hotel chain in the US.
Weekend reports in the US suggested that a hacker has threatened to release a number of embarrassing emails sent and received by guests and staff at the high-end Thompson hotel chain there.
GSS' managing director David Hobson claimed that the same thing could happen in the UK, as
many hotels leave their WiFi networks open - i.e. without a password - for guests to use in their rooms. He said: “This potentially leaves the systems open to hacker incursions, and could end up with guests' emails being plastered all over the Internet.”
Hobson said that the use of WiFi passwords in hotels is a relatively easy security procedure to implement, with reception staff giving out the passwords to guests as they check in. By changing the passwords on a regular basis, guests can be assured their online sessions, including their email interchanges, will remain private, as they should be.
Hobson said: “Many hotel guests use Webmail, rather than email client software, on their laptops for convenience's sakes. If a hacker gains access to an open WiFi network in the hotel, they can easily eavesdrop on the Webmail sessions, with potential embarrassing consequences for the guests and the hotel(s) concerned.
"UK hotels should now be looking to their WiFi security procedures to prevent a possible run of copycat hacker attacks on this side of the Atlantic. Using WiFi passwords isn't rocket science - it's common sense security and whilst this has highlighted one potential issue – open web mail, it also highlights issues with all open public hotspots. You need to ensure
your PC/laptop is set up with personal firewalls to stop hackers bouncing off hotspots on to your hard drive!”
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