Signal Systems is a member of the McLean Group, a second-generation family business founded in 1972. In addition to Signal Systems, the McLean Group owns and operates Vancouver Film Studios, Pacific Backlot Services, Harbour Landing Construction, and Blanca Realty. In partnership with John Morris, the McLean Group also owns and operates Blackcomb Aviation, a helicopter and jet charter company.

Signal was established in 2005 to provide communications services to Vancouver Film Studios customers but today serves a wide variety of business organizations operating throughout the Lower Mainland and southwestern British Columbia.