W2IHY Technologies designs and manufactures audio and RF switching equipment for amateur radio stations, with its systems built to work together in transmitting environments where radio-frequency interference and imperfect grounding can disrupt audio. The company is best known for its EQPlus and 8-Band Equalizer, alongside switching gear such as the iPlus and 3×4 Coax Switch, all manufactured in the USA. Designer Julius D. Jones provides technical support directly, and W2IHY products carry a three-year parts-and-labor warranty.
RelComm Technologies, IncEstablished in 1994, RelComm Technologies designs and manufactures RF and microwave coaxial relays and waveguide switches for communications and instrumentation applications. Its Salisbury, Maryland operation produces and ships these products from a 16,000-square-foot facility, supporting uses ranging from military and satellite systems to medical equipment and test instrumentation. RelComm’s application-specific designs operate from DC to 40 GHz and are made in the USA.SALISBURY, MD
RF Bay, IncRF Bay, Inc. designs, manufactures and sells high-performance RF and microwave components, giving engineers direct online access to U.S.-made hardware spanning frequencies from under 1 kHz to above 50 GHz. As an Ironwave Technologies company, it pairs direct purchasing with tailored, cost-conscious solutions for customer-specific requirements, backed by a one-year standard warranty.GAITHERSBURG, MD
Ten-TecTen-Tec, now a Dishtronix company, makes amateur-radio transceivers and related equipment, from open-source QRP rigs to its 100-watt Eagle and the forthcoming Phoenix software-defined radio. The company’s nearly fifty-year history includes commercial and government-grade receivers, while its current operation is rebuilding production in a Dishtronix-owned Dayton, Ohio facility. Ten-Tec also continues servicing radios it made when parts are available, preserving a broad legacy of equipment from early kits to modern digital designs.DAYTON, OH
Sector Microwave IndustriesSince 1974, Sector Microwave Industries has made electromechanical microwave and RF switches for communication, military, satellite, and commercial ground-station applications. The Deer Park manufacturer handles production on its own premises and has supplied high-reliability switches for space missions since 1985, including NASA’s Mars Surveyor mission and OSIRIS-REx’s journey to asteroid Bennu. Its ISO 9001 quality system, in-house machine shop, clean room, and dedicated high-reliability testing facilities support both standard and custom designs.DEER PARK, NY