The radio link learner
toolbox.
Check free-space loss, geometric clearance and conductor behaviour.
8 useful places to start.
Simple radio and conductor models do not infer terrain, interference, antenna gains or actual link availability.
Free-space radio path loss
Calculate ideal geometric radio loss from frequency and separation.
Fresnel zone clearance
Find a radio Fresnel-zone radius at a point along a path.
Conductor skin depth
Estimate field decay depth in a uniform good conductor.
Frequency converter
Convert frequency units with clearly labelled standards.
Decibels & linear ratio
Convert gain in dB to a linear amplitude or power ratio, and back.
Wave speed calculator
Relate wavelength and frequency to wave speed.
Great-circle distance & bearing
Compare two coordinates using a spherical Earth model.
Geometric horizon distance
Estimate an unobstructed horizon from height above a spherical surface.
A few things you
can tick off.
- Compare free-space frequency losses
- Estimate Fresnel-zone radius
- Explore skin-depth scaling