BELTSVILLE, Md.--(BUSINESS WIRE)--Digital Global Systems Inc. (DGS), a provider of innovative broad spectrum management technology for public safety, enterprise, telecommunications and government customers, announced it has raised an additional $4 million of funding through the issuance of Series A-2 convertible preferred stock. The funding round included investments by LGS Innovations (LGS) and CoVant, as well as a broad representation of existing and new individual investors. The capital rais