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Lectrosonics UCR411A-21

Compact UHF Digital Hybrid Wireless Receiver, Block 21


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 Quad Paks, on sound carts, in portable bags and in rack mount multi-couplers. To alleviate interference problems in an increasingly congested RF spectrum, an RF spectrum analyzer is built into the receiver. 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. The UCR411A is compatible with all 400 Series Lectrosonics wireless transmitters (and some other transmitter types) and can be powered with internal 9V batteries or external DC.

An industry first, this proprietary combination of digital audio and analog RF provides the superb audio quality of a pure digital system and the outstanding operating range of the finest FM wireless systems. The digital audio chain eliminates a compandor and its artifacts, and provides audio frequency response flat to 20 kHz. The RF link takes advantage of the spectral efficiency characteristics of an aggressively optimized FM radio system.

This version operates on Block 21 (537.600 - 563.100 MHz)

Lectrosonics UCR411A Features:
• Digital Hybrid technology
• SmartSquelch
• SmartDiversity
• 256 selectable UHF frequencies
• Auto-tracking front-end filters
• DSP-based pilot tone
• Graphics type backlit LCD display
• Balanced XLR audio output
• Internal batteries or external DC powering options
• Compatibility modes for use with analog transmitters


Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device.

Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at

List Price: $2,640.00
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