UCR 411a
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Compact Digital Hybrid Wireless Receiver
The UCR411A receiver provides professional performance
and a versatile feature set in a compact design for field
and location production. All settings are made from the
front panel with a powerful LCD interface, making the unit
ideal for use in portable bag systems, on sound carts, and
in rack mount multi-couplers. An RF spectrum analyzer
is built into the receiver to alleviate interference problems
in an increasingly congested RF spectrum. The receiver
tunes across its 25.6 MHz tuning range and records RF
activity with markers on the LCD screen. Finding clear
operating frequencies is a quick, simple process.
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The mechanical design of the receiver combines field
proven features developed over many years of experience
in motion picture and television production markets. The
machined aluminum housing and panels are surfaced with
electrostatic powder coated and anodized finishes with laser
etched markings to withstand the rigors of field production.
The native, compandor-free Digital Hybrid operating
mode works with all Lectrosonics hybrid transmitters. DSP
"compatibility modes" allow the receiver to also work with
companded analog transmitters from Lectrosonics and
some from other manufacturers. This expands the usefulness
of the receiver and provides the backward compatibility
needed to give existing customers an economical
upgrade path.
The interface for setting up and operating the UCR411A
receiver is an LCD display and three switches on the front
panel of the receiver. All information regarding the status
of audio and RF signals and battery levels in the receiver
and the transmitter are simultaneously shown in the Main
Window of the display.
A "locked" operating mode can be enabled by holding the
MENU button down for several seconds. In this mode no
changes can be made to the settings already stored, and
the scanning mode cannot be entered.
A special scanning mode is provided to conduct RF site
surveys and locate clear operating frequencies.
A scrollable window provides a graphical illustration of
RF signals (interference) within the tuning range of the
receiver.
The receiver operates from external DC or internal 9
volt batteries. The battery door rotates around the XLR
audio output jack, remaining attached to the receiver at
all times. All parts are made of machined aluminum to
endure the rigors of field production.
Protection against inserting the batteries backwards into
the battery compartment is provided by both mechanical
barriers and circuitry to prevent damage that might be
caused by reverse polarity.
The housing is coated with an electrostatic powder coat
finish and the battery door is anodized. Nomenclature is
laser etched into the finishes for legibility and durability.
Digital Hybrid Wireless® is a revolutionary new design
that combines digital audio with an analog FM radio link to
provide outstanding audio quality and the exemplary RF
performance of the finest analog wireless systems.
This overcomes channel noise in a dramatically new way,
digitally encoding the audio in the transmitter and decoding
it in the receiver, yet still sending the encoded information
via an analog FM wireless link. This proprietary algorithm
is not a digital implementation of an analog compandor.
Instead, it is a technique which can be accomplished only
in the digital domain.
The process eliminates compandor artifacts, expanding the
applications to include test and measurement of acoustic
spaces and musical instruments.
Operating frequencies:
Block 470 470.100 - 495.600
Block 19 486.400 - 511.900
Block 20 512.000 - 537.500
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 607.900 and 614.100 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
Frequency Adjustment Range: 25.5 MHz in 100 kHz steps
Receiver Type: Triple conversion; superhet
IF frequencies: 244 MHz, 10.7 MHz and 300 kHz
Frequency Stability: ±0.001 %
Front end bandwidth: ±5.5 MHz, @ -3 dB
Sensitivity: 20 dB Sinad: 0.9 uV (-108 dBm), A weighted, 60 dB Quieting: 1.12 uV (-105 dBm), A weighted
AM rejection: >60 dB, 2 uV to 1 Volt
Modulation acceptance: 85 kHz
Image and spurious rejection: 85 dB
Third order intercept: +8 dBm
Diversity method: Phased antenna SmartDiversityTM
FM Detector: Digital pulse counting detector operating at 300 kHz
Antenna inputs: Dual BNC female jacks; 50 Ohm impedance
Audio output: Rear panel XLR connector; can drive 600 Ohm, adjustable from -50 to +5 dBu in 1 dB steps (into nominal 10 k bal. load)
Frequency Response: 32 Hz to 20 kHz (± dB)
THD: 0.2% (typical)
Input Dynamic Range: 125 dB (with full Tx limiting)
Overall Latency (time delay): 3mS
Audio Test Tone: 1 KHz, -50 to +5 dBu, <1%THD
Front Panel Controls and Indicators: LCD display, Menu - up/down buttons, Power switch
Rear Panel Features: XLR audio output jack, External DC input, Battery compartment
External Power: Minumum 10 Volts to maximum 18 VDC, 1.6 W; 170 mA at 12 VDC
Battery Life: 6 to 8 hrs. continuous, w/ two alkaline 9 V batteries; up to 20 hrs. continuous w/ two lithium 9 V batteries
Weight: 15.2 ozs. (with two alkaline 9V batteries)
Dimensions: 3.23" wide x 1.23" high x 4.75" deep
Specifications subject to change without notice.
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