Contact Us

Diane Sofranec
Staff Editor
dsofranec@northcoastmedia.net
(216) 706-3793

Diane Sofranec is an award-winning journalist whose professional writing and editing career spans more than 30 years. She has worked in print publishing and digital media, writing and editing cover stories, feature articles and columns; creating and editing electronic newsletters, blog posts and social media content; and covering industry events.

Jesse Khalil
Associate Editor
jkhalil@northcoastmedia.net
(216) 363-7930

Jesse started working at North Coast Media full-time in January 2023, after spending the summer and fall of 2022 as NCM’s editorial/digital media intern. Jesse served as the Digital Media Specialist for GPS World before becoming the current Associate Editor. She is a graduate of Kent State University where she earned a bachelor’s in journalism.

Tracy Cozzens
Editor-at-Large
tcozzens@northcoastmedia.net

Tracy Cozzens joined GPS World magazine in 2006, serving for many years before being wooed out of retirement and rejoining in 2025.  “I simply couldn’t stay away from what I know — GPS, GNSS and PNT — and whom I know. There’s nothing like our industry when it comes to non-stop technology breakthroughs that broadly advance our world.” She has worked in government, for non-profits, and in corporate communications, editing a variety of publications for audiences ranging from federal government contractors to teachers.

Richard Langley
Innovation Column Editor
lang@unb.ca
(506) 453-4698 | Fax (506) 453-4943

Professor Langley has worked extensively with the Global Positioning System. He has been active in the development of GPS error models since the early 1980s and is a co-author of the venerable “Guide to GPS Positioning” and a columnist and contributing editor of GPS World magazine. His research team is currently working on a number of GPS-related projects, including the study of atmospheric effects on wide-area augmentation systems, the adaptation of techniques for spaceborne GPS, and the development of GPS-based systems for machine control and deformation monitoring. Professor Langley is a collaborator in UNB’s Canadian High Arctic Ionospheric Network project and is the principal investigator for the GPS instrument on the Canadian CASSIOPE research satellite now in orbit.

Tony Murfin
Professional OEM
UAV E-Newsletter Consultant
tmurfin@gpsworld.com

Tony Murfin is managing consultant for GNSS Aerospace LLC, Florida. Murfin provides business development consulting services to companies involved in GNSS products and markets, and writes for GPS World as the original equipment manufacturer (OEM) and unmanned aerial vehicle (UAV) contributing editor. Previously, Murfin worked for NovAtel Inc. in Calgary, Canada, as vice president of Business Development; for CMC Electronics in Montreal, Canada, as business development manager, product manager, software manger and software engineer; for CAE in Montreal as simulation software engineer; and for BAe in Warton, U.K., as senior avionics engineer. Murfin has a bachelor’s degree from the University of Manchester Institute of Science and Technology in the U.K., and is a U.K. Chartered Engineer (CEng MIET).

David B. Zilkoski
Survey Scene E-Newsletter Consultant
dzilkoski@gpsworld.com

David B. Zilkoski has worked in the fields of geodesy and surveying for more than 40 years. He was employed by National Geodetic Survey (NGS) from 1974 to 2009. He served as NGS director from October 2005 to January 2009. Now retired from government service, as a consultant he provides technical guidance on GNSS surveys; computes crustal movement rates using GPS and leveling data; and leads training sessions on guidelines for estimating GPS-derived heights, procedures for performing leveling network adjustments, the use of ArcGIS for analyses of adjustment data and results, and the proper procedures to follow when estimating crustal movement rates using geodetic leveling data