The ANNEXI program evaluates frequency proposals of fixed and/or mobile stations in the 30 - 960 MHz frequency range. The model is based on the procedures outlined in Annex I of the NTIA Manual. It provides the user with a conservative estimate of the interference potential from a new assignment. The propagation portion of this model is based upon the Longley-Rice Area Prediction Model. The required data are frequency, antenna gain (in dBd), antenna heights, power output, distance, and frequency separations.
Adjacent channel selectivity values are calculated for transmitter to receiver modulation combinations of analog to analog, analog to digital, digital to analog, or digital to digital.