Engineering

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AFC has a wide array of application preparation and RF engineering capabilities. If you have a need for specific assistance, please contact AFC directly for detailed information.

APCO has been a leader in public safety communications and spectrum management for over fifty years. Our engineering staff is fully qualified and experienced in frequency coordination and interpreting FCC Rules and Regulations. We offer prompt and courteous service at competitive rates.

If you wish to request Engineering services you may do so by submitting the Engineering Services Request Form. Once this form is submitted a member of APCO's Engineering staff will contact you.

If you are puzzled by the basic 601 Form, APCO can assist through APCO's Licensing Service.

Engineering Services

Pre-Coordination Frequency Search

One of the steps required to design a radio system is determining the frequency band, range, and even specific frequencies available prior to committing further resources or expenditures. APCO is able to run searches outside of the coordination process to help. We would be glad to assist in determining the availability of suitable spectrum before an agency is required to make extensive commitments. APCO cannot reserve, hold, or otherwise guarantee any resulting frequencies identified by a search process.

Knowledge of the availability of appropriate spectrum (or lack there of) for any system may be a major decision point in the progress of any radio system. A Range Search is useful in determining the general and specific availability of any spectrum. Subsequent detailed studies of specific frequencies further refine the process allowing for potential interference analysis and frequency compatibility. Site searches will help determine potentials for interference and compatibility and are especially useful in determining sources of actual or potential interference.

Propagation analysis is useful in determining the suitability of an identified radio site and/or frequency. Interference analysis is the last step in reviewing a candidate frequency. If raw distance is not available to protect from interference, a detailed study including terrain factors, system design factors, etc. may be required. Uses include locating an acceptable frequency or providing sufficient engineering information required by the FCC for waivers, concurrence from adjacent system users, etc.

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