Lectrosonics To Unveil UCR401 Digital Hybrid Wireless Receiver At Winter NAMM
January 8, 2006
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Lectrosonics is introducing the high performance UCR401 Digital Hybrid Wireless Compact Diversity Receiver, a UHF receiver combining the ultimate in performance and reliability for film production, documentary filmmaking, ENG and videography applications at Winter NAMM 2006. Compatible with the complete range of Lectrosonics Digital Hybrid Wireless and analog transmitters, as well as some analog transmitters from other manufacturers, the new UCR401 receiver incorporates a host of proprietary features that ensure best-in-class RF reception across 256 user selectable UHF frequencies under even the most rigorous and demanding conditions.
Digital Hybrid Wireless is a revolutionary new design that overcomes
channel noise by involving the patent-pending process of combining digital
audio with an analog FM wireless link. This proprietary method eliminates
the artifacts of a typical compandor design.
SmartSquelch technology in the UCR401 avoids the compromises of
conventional receiver designs, adjusting squelching behavior dynamically
under varying conditions to deliver acceptable audio quality from otherwise
unusable signals. The algorithm waits for a complete word or syllable before
squelching, assesses recent squelching history and RF signal strength, and
assesses audio content to determine available masking.
A DSP-generated ultrasonic pilot tone from the transmitter controls the
receiver audio muting (squelch) and eliminates thumps, pops and other
transients by sensing the pilot tone and incorporating brief delays when the
matching transmitter is turned on or off. The pilot tone frequency is unique
for each of the 256 frequencies in the tuning range (frequency block) of a
system, which simplifies the coordination of multi-channel wireless systems.
The use of DSP further offers increased reliability through the elimination
of the fragile, shock-sensitive crystal designs of older analog pilot tone
systems.
Proprietary SmartNR noise reduction increases the effective dynamic
range of the system by removing hiss without sacrificing the coherence of
high-frequency transients and speech tones. SmartNR offers significantly
increased transparency over the sophisticated variable low pass filters used
in previous designs by attenuating only those portions of the audio signal
that fit a statistical profile for randomness or "electronic hiss."
Microprocessor-controlled antenna phase combining keeps the UCR401 receiver
small yet still able to deal effectively with multi-path dropouts.
Lectrosonics' adaptive SmartDiversity analyzes the incoming RF level and
the RF level's rate of change to determine the optimum timing for phase
switching and the optimum antenna phase and anticipate dropouts before they
occur. The system also employs "opportunistic switching" to analyze and then
latch the phase in the best position during brief squelch activity.
Like the UCR211 and 411A before it, the UCR401 incorporates a menu-driven
graphic LCD. This provides a convenient means of viewing and altering user
settings and allows the user to view a graphic scan of the local-area RF
conditions for ease of finding a clean operating frequency. Balanced audio
output is via an industry standard XLR connector. The UCR401 may be operated
using two internal AA batteries or external DC power. For more information, visit their web site at www.lectrosonics.com.
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