Spectrum engineers are involved from "cradle-to-grave" in nearly all aviation systems. OMB Circular A-11 and DOT Order 5420.3 require that radio frequency spectrum be available before developing or procuring new communications-electronics systems.

Other Responsibilities Include

• Pre-development — Spectrum engineers assist in determining the proper frequency band for proposed equipment and applicable standards.
• Development and Production — Spectrum engineers play a key role in testing to ensure that equipment meets specifications for electromagnetic compatibility and radiation hazards criteria. FAA's Technical Center, under the Spectrum Engineering Services' guidance, provides valuable assistance in addressing these issues.
• Operation — The Regional frequency management offices engineer site-specific radio frequencies for approval by Director of Spectrum Engineering Services. Regional frequency management offices also perform the detailed on-site investigations needed to resolve cases of radio frequency interference.

• Spectrum Engineering