Seimac has been in business for over 25 years, providing radio and data acquisition products for global customers in the research, military, search and rescue, and oil and gas industries. The company was founded in Bedford, Nova Scotia by Joe Seiler and Hugh MacPherson, two retired combat systems engineers from the Canadian Navy. Over the years, the company has evolved from being an electronics consulting firm to a world leader in the design and manufacture of specialized radios for mission-critical applications. The company designs, manufactures, and markets a variety of products including Cospas-Sarsat beacons, a range of miniaturized ARGOS satellite radio transmitters that are used in tracking objects and animals in marine and terrestrial applications, GOES satellite transmitters, Spread Spectrum Radio Modems, and VHF radio and optical beacons. Seimac, a Canadian company, is based in Dartmouth, Nova Scotia, with a sale office and warehouse in the United States. Seimac is part of the Cobham Avionics & Survelliance Division, a member of the Cobham plc group of companies traded on the London Stock Exchange.