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First Coast Radio System

Regional shared public safety radio across three system generations — original, retrofit, and full P25 replacement.

The shared regional public safety network carrying JEA, the municipal utility, together with every public safety agency in the region.

Taken from the original system through retrofit onto newer technology and ultimately a full replacement on the Motorola P25 platform, including master site relocation, backup site and multiprotocol capability, and site expansion.

Tower and site design, RF propagation and multipath analysis and disaster recovery were all owned here, with coverage modeled in EDX Wireless and validated in the field. Coverage is not a map exercise: reflections off buildings, terrain and water put nulls exactly where a responder does not expect one, and the failure mode is a firefighter inside a structure whose radio does not reach anybody.

What the sky allowed

New tower, site and facility construction was coordinated with the Federal Aviation Administration, so that what went up cleared aircraft operations. Duval County carries an international airport, an FAA-licensed spaceport and several airfields, which makes obstruction evaluation and height limits a design input from the first sketch rather than a permit discovered late.

That constraint bites precisely where it hurts most. The single variable coverage most wants to increase is antenna height, and it is the one the airspace is least willing to give. Every site that could not go up had to make the difference somewhere else — in siting, in pattern, in how many sites the system needed to carry the same ground.

The work began under contract to JEA while at Coleman Technologies and continued for the following nineteen years at the city.

Outcome

Twenty-four years of continuous ownership of infrastructure that gets replaced roughly once a generation.