- Afl Network Svc
- Cablesoft Engineering
- Centrepetal Solution Strategie
- Comtech Electronics
- David Snavely
- Essex Corp
- Fresnel Microwave Systems
- Hutchins & Wunnenberg Engrng
- Integrated Information Tech
- James Osburn
- Kessler & Gehman Assoc
- Mid-America Communications Inc
- Mintel Communications
- Morrison Hershfield Corp
- Nelson Engineering Svc
- New Com Technologies
- Power Comm Engineering Inc
- R F Engineers
- Tech Service Co
- Truevance Communications
- Turnkey Communication Solution
