Engineering Notes
The calculated range represents a theoretical maximum based on the parameters entered into the calculator. Actual RF coverage can be significantly different from the calculated value.
Antenna gain, transmitter power, receiver sensitivity, frequency, and system losses all affect the calculated link range. The calculator should therefore be used as a link-budget estimate rather than a guarantee of actual coverage.
FAQ
Does the calculated distance represent the actual RF range?
No. The calculated distance is a theoretical maximum. Actual range depends on the conditions of the RF path and the performance of the installed system.
Why does increasing antenna gain increase the calculated range?
Higher antenna gain increases the effective signal level in the direction of the receiving antenna, improving the link budget and allowing a greater calculated distance.
Why can two systems with the same transmitter power have very different ranges?
Transmitter power is only one part of the link budget. Antenna gain, receiver sensitivity, frequency, and cable or other system losses also affect the calculated range.
What does LOS mean in the range examples?
LOS means Line of Sight. The listed ranges are examples associated with line-of-sight operation under the conditions shown in the table.