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About OCG

While the Omnicom Consulting Group (OCG) name is new to the consulting industry, our professional staff with more than 120 years of combined public safety communication systems experience certainly are not.  OCG is 100% employee-owned and our staff are all former employees of RCC Consultants, Inc. Southeast Region.  Our staff has been a cohesive team for more than 10 years and each has gained the reputation of being a respected leader in all of the markets we serve because of the depth and breadth of our knowledge and experience that we carefully match to fulfil our clients' specific objectives.
Tim Barrentine, PMP
Chris Monzingo, P.E., PMP
Vice President

Mr. Barrentine is President of OCG and responsible for business development and management of engineering personnel at OCG, as well as assisting OCG clients with the project management, design and implementation of wireless communications systems. His areas of expertise include project management, needs assessment, communications system design, staffing analysis, consolidation studies, system procurement specifications, proposal evaluation, implementation assistance, communications site development, and acceptance testing. 


Mr. Barrentine has over 24 years of experience with 800-MHz, UHF, and VHF trunked and conventional digital/analog, voice radio systems, mobile data systems, commercial wireless mobile data systems, automatic vehicle location systems (AVL), digital microwave radio systems, fiber optic systems, fire alerting systems, equipment shelter planning, tower planning and communications site grounding systems. In 1991, Mr. Barrentine began his consulting career at Omnicom Inc.  As a Senior Consultant in 2000, he commenced his employment with RCC Consultants and advanced to Director of the Southeast Region.  In April of 2015, he and a team of engineers separated from RCC to form Omnicom Consulting Group, Inc.


Mr. Barrentine has Bachelor of Science Degrees in Electrical Engineering and Geology from Florida State University.  Additionally, he is a certified Project Management Professional (PMP# 534431) and holds certifications in the Incident Command System (ICS), National Incident Management System (NIMS), and Homeland Security Exercise and Evaluation (HSEEP) Program.

Mr. Monzingo recently assisted in the migration of St. Johns County from its conventional VHF radio system to an 11-site P-25 trunked radio system. Mr. Monzingo is currently participating in the procurement, design and implementation of the Athens-Clarke County, GA P25 Phase 2 project now beginning the implementation phase.


Mr. Monzingo is responsible for assisting OCG clients in the design and implementation of wireless communications systems.  Mr. Monzingo has participated in the planning, analysis and design of wireless systems including hands on experience in engineering design and development for VHF/UHF/700/800 MHz P25, conventional and trunking, simulcast and multi-site land/mobile radio systems and licensed and unlicensed microwave systems in all frequency bands.


Mr. Monzingo’s areas of expertise include project management, needs assessment, microwave system design, RF coverage analysis, proposal/bid evaluation, electrical system design, communications shelter design, NIMS, ICS, HSEEP Exercise Design and the NEC expertise.


Mr. Monzingo has over 22 total years of professional experience. Mr. Monzingo is a Professional Engineer in the State of Florida (PE#73902), in the State of Georgia (PE#037855), in the State of South Carolina (31931) and in the State of Alabama (34784-E)  Mr. Monzingo is also a registered model law engineer with NCEES (52245)  and is a Project Management Professional (PMP #1385992). He received his bachelor’s degree in electrical engineering and MBA from Florida State University. Mr. Monzingo also holds certifications in NIMS, ICS, exercise design and evaluation.

Lew Phillips
Senior Consultant

Mr. Phillips has more than 38 years of experience in public safety communications systems and assists our clients with the design, procurement and implementation of voice and data communications systems. For the past several years, he has been leading large-scale public safety migration projects, many of which consist of a move from proprietary systems to an interoperable P25 system. Mr. Phillips recently completed the migration of client from their conventional VHF radio system to an 800 MHz, 11-site simulcast P25 Phase 1 trunked radio system.


Mr. Phillips has experience with numerous communication systems technologies and their associated infrastructure including Low and High Band VHF, UHF, 700/800/900 MHz, analog and digital conventional and trunked land mobile radio systems, multisite/simulcast, P25 Phase 1 and 2, microwave backhaul systems, mobile data systems, communications facilities planning, transportation communications systems, and antenna site development, implementation, and grounding and bonding. His in-depth experience in system maintenance and operations foster his understanding of system performance from the client’s perspective.


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