John W. Barker

J5 Infrastructure Partners provides engineering, installation, and construction services for the telecommunication industry. It offers site procurement services that include site acquisition, zoning and permitting, and utility coordination; structural, electrical, and mechanical engineering services; land surveying, tower mapping, photosims; and site construction, installation services, including construction management, site maintenance, and equipment installation. J5 Infrastructure Partners is headquartered in Irvine, CA.

Cortel, Inc. engages in designing, engineering, construction and equipment installation services for wireless networks. Its services include cell site acquisition, cell site zoning and permitting and cell site project management. The company was founded by John W. Barker and Michael C. Miller in 2004 and is headquartered in San Diego, CA.