NAB Seeks 'Guardrails' on FM Directional Antenna Modeling

Rule changes allowing the use of computer models to verify FM directional antenna patterns should include requirements that those doing the modeling be qualified, and that full documentation of the underlying data be available to the FCC and interested parties on request, said NAB in replies posted Friday in docket 21-422. “With appropriate guardrails as described herein, NAB believes that computational simulation of FM directional antennas is already mature and can produce comparable accuracy to physical measurements.”