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Antennas
Base Units
CPE Units
Senao CB3
 
Mesh Units
Link Units
 
WISP Starter Kits
 
Mobile Units
Coax, Cables & Connectors
Enclosures
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Power Products
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Network Management
Mini PCI Cards
 
RouterBOARDS
 
Wrap Boards
 
Spectrum Analyzer
 
 
Power Budget Calculator
Calculates the total power budget of a complete wireless system.
 
Free Space Calculations / Path Loss
Calculates loss of power over distance assuming no FRESNEL Effect and clear line of sight.
 
Fresnel Zone Calculator
This Fresnel Zone Calculator is used to check for clearance above obstacles that may impact the performance.
 
Milliwatts/dBm Conversion
Converts milliwatts of power to dBm's.
 
System Performance Calculator

This calculator will give you one of three answers:

  • If you leave distance blank it will apply the defined SAD factor (or default to 30%) to the Operating Margin and supply the max. distance (in Km and Miles) at which the Margin operates.
  • If you enter the distance it will calculate the Operating Margin and the SAD factor.
  • If you enter distance but leave RX or TX antenna gain (or both) blank it will apply the chosen SAD factor (or default it to 30% if none supplied) and generate the required antenna power. If both are left blank it will calculate a symmetrical antenna gain.

 

Mesh Network Calculator
 
Network Modeling & Diagram Tools
 
 
Basic Fixed Wireless ISP Topology
Using Landline Internet Connection
 
Basic Fixed Wireless ISP Topology
Using Wireless Internet Connection
 
Basic Fixed Wireless ISP with Mesh Topology
Using Landline Internet Connection -
5.8 Ghz Fixed for Business
Mesh for Residential
 
 

How to start

  · How to start a wireless ISP?
  · How to do a search on WISP-related info...

Radio power & other legal stuff

  · Can I legally modify my wireless network equipment?
  · Maximum power for 802.11a
  · What are the useful RF units of gain and power for the Wireless ISP?
  · How does one convert Watts to dBm?
  · What is the maximum output power allowed for wireless Ethernet.
  · How is antenna gain (dBi) measured and used?
  · What other power losses are there?
  · How does output power relate to distance?
  · How can the above be used to calculate output power?
  · How is output power calculated when an external amplifier is added?
  · Can splitters be used? What happens to output power with a splitter?

Bandwidth management

  · How can I do bandwidth management with Linux?
  · Can Squid be used to manage bandwidth?

What to do and what not to do

  · what not to do on a WISP install
  · How to ground an antenna and spark arrestor

General

  · I'm new to wireless and confused by the terms. What do they mean?
  · What is IEEE 802.11?
  · What is IEEE 802.11a?
  · What is IEEE 802.11b?
  · What is IEEE 802.11g?
  · Is it possible to mix 802.11g 108mb wireless devices from different vendors?
  · When comparing add-on antennas, what does dBi mean? How do I choose?
  · Should I use my neighbor's unsecured wireless network?
  · There are several networks around, how does that impact mine?
  · How fast can I actually download over a wireless network?

60.0 Troubleshooting

  · Is there a trouble-shooting guide for wireless?
  · Why is my wireless connection so slow?
  · How Can I Boost My Range?
  · Will My Cordless Telephone Interfere With My Wireless LAN?
  · Why Can't I Share Files?
  · I Can Connect; Why Can't I Get To The Network?
  · Why can't my wireless laptop see any wireless networks?
  · Why does my wireless connection repeatedly disconnect shortly after connecting?
  · How can I keep my wireless adapter from connecting to other networks?
  · I can't connect after adding/changing devices, hardware, firmware, or drivers!

 

 
 
 
 
 
 
 
 

 
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
       
         

Defacto Wireless Distribution, LLC.
12775 LBJ Drive | Brenham, Texas 77833