ITU-R PHYSICS ENGINE // LIVE

Microwave Link Budget Calculator

Amateur microwave path analysis with full ITU-R physics models — knife-edge diffraction, super-refraction, troposcatter, and aircraft scatter. Supports 10 / 24 / 47 GHz.

Station Parameters
Callsign e.g. W1AW
Grid Maidenhead
TX Power W
Dish Diameter metres
f/D ratio
Feed Eff %
Preamp NF dB
1.5 dB
Antenna Height AGL m
Precise Lat decimal °
Precise Lon decimal °
Callsign e.g. N6NB
Grid Maidenhead
TX Power W
Dish Diameter metres
f/D ratio
Feed Eff %
Preamp NF dB
1.6 dB
Antenna Height AGL m
Precise Lat decimal °
Precise Lon decimal °
Atmospheric Conditions
Temp °C
Humidity %
Rain mm/h
Cloud LWC g/m³
Ducting Factor 0.15 — Marine layer (light)
0.15
OPERATING BAND:
CW Filter BW Hz
Min S/N dB
Configure station parameters and click COMPUTE to run the link budget analysis.
Enter callsign and grid for each station, then click Compute