WLAN Book

Outdoor Wireless Planner (beta)

<== Click on map to add points or search for location by typing address, GPS coordinates, and/or dragging.

WLAN Mode: Markers Circles Contours Gradient
Bridge Mode: Point-to-Point


lat/long (click to copy)

distance between points (click to copy)

System Operating Margin

Enter details and press calculate:
(initials values based on Linksys WRT54G wireless router with 31mW radio, 802.11b DSSS at 11Mbps data rate

Frequency (MHz):                
Distance between sites (miles): 
Transmit Power (dBm):           
Transmit Cable Loss (dB):       
Transmit Antenna Gain (dB):     
Receive Antenna Gain (dB):      
Receive Cable Loss (dB):        
Receive Sensitivity (dBm):      

Free Space Loss is:    
Received signal is:

 

Your Theoretical System Operating Margin is:

Please be aware that these figures are based on a clear Fresnel zone. If the Fresnel zone is encroached then the operating margin may be reduced by as much as 10dB.


Fresnel Zone Calculator

Enter details and press calculate:

Distance (miles):  
Frequency (Mhz):   




The 1st Fresnel Zone is        
80% of the 1st Fresnel Zone is 
60% of the 1st Fresnel Zone is


Milliwatts to dBm Power Conversion

Enter Power of Card in Milliwatts : Total:


dBm to MilliWatts Power Conversion
Enter Power of Card in dBm : Total:


WLANBook.com Copyright © 2008 All Rights Reserved. 
7/13/08
- clickable circles option
- clickable gradient option
- point-to-point link mode
- distance between clicked points
- system operating margin calculator 
- fresnel zone calculator
- mw to dbm conversion calculator
  (above based on calcs by www.bizsyscon.com)

7/03/08
- Google Maps integration
- lat/long display in text area
- clickable markers and contours
- Google Earth integration (kml file)