How to Calculate Transmission Range of Radios - Free Space Loss Calculator

Mathematical formulas can be used to predict the transmission range of MaxStream radios through freespace. See below for information on the free space loss model and some additional information about a model that takes into account rolling terrain.


The freespace formula can be used to predict radio performance in an ideal environment such as mountain top to mountain top, or on the ground to an Arial vehicle.



In more practical applications the ground can have some interference especially in moderately rolling terrain where the ground can have a significant effect on the path loss. We usually build in a fade margin of 21 dB in our calculations. 


You can use repeaters to extend the link distance. See the application note on this website for additional information.

Last updated: Aug 23, 2017

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