When used in its native Digital Hybrid mode, the SM performs without the hindrance of an analog compandor or the headroom-limiting pre- and de-emphasis found in most analog systems. Delivering 107dB signal-to-noise ratio and flat frequency response to 20kHz, Lectrosonics' patent-pending Digital Hybrid Wireless technology uses both 24-bit digital audio and analog FM signal transmission methods to encode a digital signal into a robust analog format for transmission over a UHF FM carrier. The SM's receiver captures the signal and DSP circuitry recreates the original digital audio. This unique system represents the best of both wireless worlds: digital audio quality combined with the spectrum efficiency and long range of FM wireless systems.
Operating on a single AA battery, the Lectrosonics SM features 100mW of transmitting power, compatibility emulation modes, and an LCD for easy frequency and audio level adjustment. The standard Lectrosonics TA5M five-pin input jack is wired to a newly developed audio input circuit allowing for a wide dynamic range and is compatible with electret lavalier mics, dynamic mics, and line level signals. While the SM's added RF power allows for extended range and greater resistance to interference, its frequency agility (256 channels) and emulation modes give engineers increased operational flexibility and permits use with a variety of pre-existing analog receivers.
The small and splash-proof body of the SM - machined from a solid aluminum block for featherweight rigidity - is finished with a special non-corrosive material. Likewise used on NASA interstellar vehicles, the finish resists the destructive effects of salt water and perspiration. The single AA battery provides over four hours of operation with lithium or NiMH sources.
The Lectrosonics SM is offered in the nine standard Lectrosonics frequency groups with 256 frequencies each. MSRP is $1,650 and is scheduled to be available in May 2005.
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