3dB Communications, LLC was founded by Ken Seymour, a wireless communications engineering veteran. The firm specializes in wireless and radio engineering services including RF Network Design, Broadcast Engineering, RF Exposure analysis, Rooftop and Radio Site Management, Project Management, FCC/FAA Regulatory, RF Interference Mitigation, and RF Safety.

We provide all the specialized engineering services needed to design, build, optimize, upgrade, and maintain your broadcast or wireless infrastructure.

The firm has extensive experience in designing complete wireless networks, whether it be 3G, 4G, 5G, Public Service Interference Mediation, Radio Repeaters, E911, 2-way, and FM broadcast systems. This includes conceptual RF site planning, radio search area identification, Project Management, Construction Drawing reviews, and developing RF justification plans for Jurisdictional zoning applications.



Ken Seymour Principal, Founder

Ken has over 45 years of experience in RF communications, including 28+ years with hands on engineering, design, management, FCC/FAA regulatory, construction, radio site administration, and project management expertise with his tenure at McCaw Communications which was subsequently migrated into today’s AT&T Mobility. He has personally designed over 1000 wireless sites and consulted on over 4800 designs throughout the USA. In addition, Ken has extensive broadcast engineering experience where he has engineered and built numerous FM & TV stations.

In 1989, Ken was McCaw Communication’s (Cellular One) first RF Engineer and subsequent first Engineering Manager in the Oregon Market. In 2001, he became Director of RF Engineering for AT&T Wireless responsible for Western United States (OR, WA, ID, NV, UT, AZ, NM, CO, AK). In 2005, AT&T Wireless was purchased by Cingular which has now become AT&T Mobility where he was an Engineering Manager for the Pacific Northwest (OR, WA, ID, AK).

Previous to McCaw, Ken was a staff engineer at Intel in the Microcontroller Development Systems division. In 1985, Ken, his brother Keith, and another Intel engineer formed OrCAD Systems where he was Vice President of Engineering. OrCAD was well-known for developing the CAD industry’s first low cost schematic capture software products.


FCC Commercial General (1st Class) Radiotelephone License


University of Portland, BS, Electrical Engineering – Portland, OR

Published Works

Frequency Modulation, Electronics Handbook, Chapter 78, CRC Press, 1996. ISBN # 0-8493-8345-5

A New Frequency Agile Transmitter Combining System for Cellular, IEEE Vehicular Technology Conference, co-author 1991

Keith Seymour Principal

Portland State University; MBA – Portland, OR

Oregon State University; BS, Business Administration – Corvallis, OR

DJ Seymour, PE Principal

Registered Professional Electrical Engineer Washington State


Gonzaga University; BS, Electrical Engineering – Spokane, WA