Federal Trunked System 3CD

Some recent discoveries of new control channels in the federal UHF bands have indicated that these trunked systems are part of a larger trunked system core, using the system ID of "3CD".

This is a single system core that is managed by Motorola Federal Solutions. They call it the Managed Zone Core:

https://www.motorolasolutions.com/content/dam/msi/docs/business/solutions/industry_solutions/us_federal_government/_static_files/us_fed_managed_zone_core.pdf

Motorola drops trunked sites as needed and then leases sites on this core to various federal locations or facilities that don't have the budget to build a system from the ground up. 

So far, a majority of the sites seem to be at Department of Veterans Affairs medical centers and hospitals. But a number of sites in multiple states are utilized by the Center for Disease Control (CDC).

While all these sites and agencies share the system core controller, they are not interconnected with each other. Each operates like it was a standalone trunked system. I do think some of the VA sites in Florida may be networked to each other, as I did hear some testing early on that was identifying various sites for test counts. 

System ID       3CD

WACN            BEE00

Flavor              Phase 2

Centers for Disease Control (CDC)

Tower  1-41    Atlanta, GA

406.1125, 407.8125, 409.3000, 410.0375

Tower  1-42    Chamblee, GA

406.7750, 408.4375, 408.6375

Tower  1-43    Lawrenceville, GA

408.8375, 409.0375, 409.2375

Tower  1-44    Ft. Collins, CO

408.8375, 409.2375, 409.9375, 410.0375

Miami VAMC

Tower 1-33     Miami, FL 

408.0000, 409.3250, 409.5125

Orlando VAMC

Tower 1-11     Orlando, FL

406.5000, 407.8625, 408.2375, 409.4375

Coatsville, PA VAMC

Tower 1-66     Coatsville, PA

170.1875, 170.5875, 172.6875

Jesse Brown VAMC, IL

Tower 1-04     Chicago, IL

407.8375, 408.2375 

 

There are probably more federal facilities that may end up using this system core, so keep an ear out for P25 control channels in your area that have the system ID of 3CD!