Disclaimer: Due to the nature of radio frequency propagation and the numerous factors that can affect operating range we do not guarantee that you will achieve any specific range for your application. These wireless calculators are for estimation purposes only. L-com does not guarantee their accuracy or applicability. L-com cannot be held liable for wireless installations based on these tools. Customers should use these tools at their own risk.
Enter one parameter in each column (or leave blank) depending on what is know and the calculator will supply the appropriate conversions automatically. Up to 2 decimal places may be entered as 0.xx or .xx.
Note: Connector loss is generally minimal unless you have many of them or if your cable is very short.
Free Space Loss is the loss of power over distance (assuming no FRESNEL Effect and nothing in the way). This is a very idealised calculation and in practice everything interferes with the signal but this will give you a reasonable approximation of the actual loss over distance.
Enter the system Frequency in MHz and the distance in either Kilometers (Km) or Miles below and then click the 'Calculate' button. 1 GHz = 1000 MHz e.g. 2400 = 2.4 GHz.
This calculator defines how much clearance you need (you will require more than simple Line-of-Sight) and for longer links > 3 Km (2 miles) whether you may have a ground clearance problem.
Enter the Total link distance (in Miles or Kilometers), if you do not enter an Obstacle distance (in Miles or Kilometers) the calculator will use the mid-point for all calculations (Note: assumes antennas at same height). Finally enter the system Frequency in MHz and then click the 'Calculate' button. 1 GHz = 1000 MHz e.g. 2400 = 2.4 GHz.
The calculator will generate the radius of the 1st Fresnel zone only (at the obstable point or the mid-point), the 60% (no obstacle) radius and the height of the effective earth curvature at the mid-point of the Total link distance using the effective earth radius.
System Performance Wireless Calculator - How far will it go, will it get there or what is my Operating Margin?
This wireless calculator will give you one of three answers:
To RESET any parameter just set it to BLANK before clicking 'Calculate'
Notes: RX Sensitivity is always expressed as a negative dBm (- dBm) and is the lowest power of signal your radio can handle. RX Sensativity should be listed in your radio manual and will be typically in the range of -70 to -110 dBm.
Note: If you solve for TX antenna (you leave it blank) and define a specific SAD factor it is applied to the TX budget and any TX antenna value will include this factor. If you then click Calculate again without changing anything, the SAD factor will be calculated to include the supplied TX antenna value and thus may show a lower value than the original one.
Power in milliWatts to dBm (and vice versa) . Enter the 'Transmit Power' in milliWatts OR the 'Power Ratio' in dBm and click the appropriate 'Calculate' button. 1 Watt = 1000 milliWatts.