VHF and UHF Area Prediction
This tool provides the ability to determine RF signal loss and shadowing for VHF/UHF (30MHz - 3GHz) systems. A transmitter can be placed on the map below and the simulation area can be chosen. The pathloss result of the propagation analysis is overlaid on the map.
To run a simulation:
- Select a location on the map to place an Antenna.
- Select a
- Enter a
- Select a
Before running another simulation:
This release (version 1.1) has the choice of 4 different knife edge diffraction models to determine pathloss estimates influenced by the terrain only.The pathloss model does not take into account features such as buildings, bridges and other man-made structures.
Terrain data source is 90m resolution SRTM version 2.1 data for the entire Earth between the latitudes of -60 and +60.
Antenna gain for Tx and Rx antennas is set to unity.
Pathloss maximum is capped for values 170dB or greater.
Approximate simulation times range from a few seconds for 5km radius to almost 1 minute for 20km radius.
See also more technical details.