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Frequency Coordination

Frequency coordination is required by the FCC and begins when the system design is complete. An interference analysis is performed to determine frequencies that will not cause harmful interference to other existing and proposed microwave paths and earth stations in a particular band.

Frequency coordination requirements differ based upon the FCC rule section that your service falls under.

Part 101 Services - Operation Fixed Services (OFS), Common Carrier (CC)
Part 74 Services - Broadcast Auxiliary Service (BAS)

After frequencies are selected, a Prior Coordination Notice (PCN), including a path data sheet, must be sent to all existing microwave users in the area to notify them of the proposed path. The FCC rules state that existing users have 30 days to object to the proposal. Once the 30-day period expires and any objections are resolved, a supplemental showing must be included with your FCC license application. To learn more about the frequency coordination process, download our white paper, Fundamentals of Microwave Frequency Coordination.

Part 78 Services - Cable Antenna Relay Service (CARS)

Comsearch's Microwave Frequency Engineering Services include interference analysis and frequency coordination.

Spectrum Management Process Overview:

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Industry Studies & Articles:

Broadcast Auxiliary Service, Frequency Coordination, and Database Issues

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