- LSR was founded in 1980 by Larry Schotz, one of the leading RF Engineers of FM receivers. Since that time, Larry has acquired numerous patents in his name. Accomplishments include the first PLL digitally tuned receiver, the Schotz noise reduction circuit, and the cassette adapter for portable CD players. Audio applications such as the wireless headset, speakers, and microphones were among the many initial products designed by LSR. As demand for wireless solutions have increased and become more sophisticated, LSR's product offering has increased and became more sophisticated as well. Offering products in their range of wireless protocol expertise, including Zigbee, Bluetooth and Wi-Fi, LSR offers FCC Certified SMT wireless modules with compatible cables and antennas.