Sigtronics

Sigtronics makes aviation headsets, intercoms, and communication accessories. The company designs and assembles its products in San Dimas, California. Its equipment is used in aviation as well as emergency and tactical communications. Sigtronics has more than 50 years of experience in manufacturing communication products. Pilots work within its management, engineering, and manufacturing teams, and the company tests its products during actual flights.

Headsets and intercoms for aircraft

Sigtronics produces several types of aviation communication equipment.

Its product range includes headsets, portable intercoms, panel-mounted intercoms, adapters, and accessories. The company also makes wireless headsets and intercom systems that support two to twelve crew stations.

These products are designed to help people communicate in aircraft where engine and background noise can make conversation difficult.

The company's first aviation headset, the S-1M, was introduced in 1978.

In 1980, Sigtronics shipped its first SPA-400 intercom. This became a widely used intercom in general aviation.

The AeroPro 90 replaced the S-1M headset series in 1985. During the 1990s, new headset lines followed, including the S-40 series.

Testing equipment in real aircraft

Sigtronics uses aircraft during product development, alongside laboratory testing.

Its microphones and intercoms have been developed with help from aircraft including the Beechcraft T-34 Mentor and North American T-28 Trojan.

The T-28 presents a demanding communication environment. During takeoff, the aircraft produces a sound pressure level of 114 dB.

Testing in conditions like these allows the company to assess its microphones and intercoms during actual flight operations.

Sigtronics also reports that its own employees use the headsets and intercoms in flight.

Manufacturing in California

Sigtronics has developed several manufacturing capabilities within its own facility.

These include cable assembly, microphone manufacturing, circuit board assembly, soldering, injection molding, machining, and pad printing.

The company began working with plastic injection molding in 1984 after having difficulty finding suitable headset cords.

It purchased a plastic injection molding business in 1987. This allowed it to manufacture parts such as headset ear cups and intercom chassis boxes.

In 1997, Sigtronics combined two locations into its facility in San Dimas, California.

Communication beyond aviation

Sigtronics also develops custom headset and intercom systems for applications outside aircraft.

Its equipment is used in military ground support, tank simulators, and fast attack boats. These applications involve environments where communication can be difficult because of surrounding noise.

The company can create custom-engineered communication systems for different requirements.

For pilots and aviation fans, Sigtronics is a brand closely connected to practical aircraft communication. Its use of real aircraft for testing, combined with in-house manufacturing and staff who fly, gives its products a clear connection to everyday aviation.