Frank Hargrave has more than 30 years experience in engineering and manufacturing at several major companies, including Multitech, Inc., ITT, and Yale Security, Inc. He is published in a variety of topics, including active filter design, residential telemetry systems, thermal compensation methods in electronic circuits, and telephone line interface methods. Mr. Hargrave currently runs his own consulting business in Charlotte, NC, where he also teaches classes at ECPI College of Technology. He has been issued 12 U.S. patents and has several others disclosed and in process.