Egli Formula

Similar to the Friis model, except a simple undulating terrain is interspersed between the link ends. The model assumes 15m high hills. Good for VHF, UHF, and fixed to mobile. The calculation is frequency limited to these bands + a little.

The Egli Sensitivity Calculator.

Friis Diagram

Design Specification

Link Frequency (1Hz.. 100GHz)

Tx Power (1mW.. 10GW)

Tx to Antenna Loss (db)

Tx Antenna Gain (dbi)

Tx Height (1m.. 1Km)

Link Distance (1m.. 1Gm)

Rx Antenna Gain (dbi)

Rx Height (1m.. 1Km)

Rx to Antenna Loss (db)

Rx Sensitivity (mV)

Required Rx Margin (db)

Go Back