lighter than similar products of the time—small enough to hold in the palm of the hand and weighing just 2.2 pounds. This positioned it to complement the one-piece Sony Betacam video camera, which had been widely adopted by remote video broadcast crews. The FP31 could operate up to eight hours on two standard 9-volt batteries, and included two separate microphone/line outputs for two-camera video shoots. Its master section featured an adjustable threshold limiter to prevent overload distortion, and there was a separate microphone/line switch with low-cut filter on each channel. By 1984, just a year after its introduction, the FP31 was being used by ABC, CBS, NBC, Turner Broadcasting System, and was later succeeded by the Shure FP33. In addition, Shure introduced other portable products useful to broadcast remote and field recording, such as FP11 Microphone-To-Line Level amplifier, the FP12 Headphone Bridging amplifier, and the FP22 Headphone amplifier. In 1991, Shure introduced the FP410 automatic mixer, featuring Shure's patented IntelliMix circuitry, which automatically activates special double-element microphones based on the direction of a talker's signal. That same year, the FP410 was recognized with the Technical Achievement Award from the International Television Association for "significantly advancing the state of the art in the field of non-network television." Shure later introduced the SCM810, an 8-in, 1-out automatic microphone mixer that also featured Shure IntelliMix circuitry. Shure also introduced digital signal processing products for this market, beginning with the DFR11EQ digital feedback reducer (introduced in 1996) and the DFR22 2-in, 2-out feedback reduction audio processor. Conference Shure introduced the Automatic Microphone System (AMS) in 1983, one of the first automatic, high-quality mixer system using directional gating for installations utilizing multiple microphones. In 1987, Shure SCM810 Automatic Mixer installations begin at the United States Capitol, and by 1997, the US Capitol was one of the largest Shure automatic mixer installations in the world. In 2008, Shure introduced the Microflex microphone line specifically designed for conference room applications. Wireless microphone systems Shure manufactures several lines of wireless microphone systems, many of them utilizing microphone capsules from their wired microphones models such as the SM58, SM87, Beta 58, and Beta87A. The systems range in scope from entry-level to high-end systems used for touring and large-scale event applications. In the early 1950s, Shure introduced the Vagabond 88 wireless microphone system. Operating within a copper wire circle either suspended from the ceiling or laid on the floor, the