Lectrosonics DCR822 – Compact Dual Channel Digital Receiver (Block A1B1 / 470-608 MHz) Lectrosonics

The DCR822 compact 2-channel digital receiver with analog and digital audio outputs utilizes the Lectrosonics signature digital architecture with remarkable audio quality and ultra-low latency. The receiver includes an extended operating range rivaling the best analog and Digital Hybrid Wireless¨ systems with continuously tunable tracking filters covering the entire frequency band of the unit. The innovative Vector Diversity technology raises the bar for digital transmission integrity with two RF front ends per channel, and a unique phase-matching system. The extremely robust RF front ends of the receiver will hold up in severe RF environments and close carrier spacing, whether analog or digital. The DCR822 has a flexible output routing scheme, allowing a variety of applications including Talkback. And, a digital recorder at 24 bits, 48 kHz is included Ð and records up to 4 audio tracks on a front-mounted microSD card.

The 822 receiver is compatible with pure digital transmitters from the D Squared line including the DBSM, DBSMD, DBu, DHu, DPR and DPR-A. The 822 is also compatible with stereo digital transmitters including the DCHT and M2T. Finally, the receiver is also backward compatible with any Digital Hybrid Wireless transmitter made in the last 20 years.

Features:

• Compatible with D2, Duet and Digital Hybrid Wireless¨ transmitters
• Vector Diversity with two receivers per channel for superior digital signal recovery
• High IP3 and high-current front ends for robust performance even in severe RF environments
• IR bi-directional port for transmitter setup
• Analog and Digital audio outputs with TalkBack (in applicable RX modes)
• USB interface
• Up to 4 channel recording on microSD card (depending on RX modes)
• AA Battery or external powering
• Same cross-section as the UCR411a for mounting using existing hardware
• Bright, high-density OLED display for clear viewing in any lighting conditions
• AES 256-bit, CTR mode encryption, with 4 different key policies available

Included Accessories:

• 4x AA Batteries
• MicroSD card (part# 55010)
• A1B1 version: 2x AMJ-19 and 2x AMJ-22 antennas
• B1C1 version: 2x AMJ-22 and 2x AMJ-25 antennas
• 941Êversion: 2x AMJ-944 antennas
• CCMINI zippered pouch

The DCR822 digital receiver provides the highest level of RF and audio performance available with a versatile feature set in a compact design for field and location production. Settings can be made from the front panel with tactile buttons and LCD interface, making the unit ideal for use in portable bag systems and on sound carts. An RF spectrum analyzer and SmartTune are built into the receiver to alleviate interference problems in an increasingly congested RF spectrum.

The mechanical design of the receiver fits into the same dimensions as the older UCR411A and combines fieldproven features developed over many years of experience in motion picture and television production. To decrease weight, the DCR822 provides a dual channel receiver in one unit powered by 4 AA Lithium batteries or external DC. The receiver is also equipped with both an IR port and microSD card slot for data transfer. The machined aluminum housing and panels are surfaced with a hard-anodized finish with laser etched markings to withstand the rigors of field production.

The RF gain stages in the front end use a newly developed design to provide low noise RF amplification, excellent sensitivity and extremely low susceptibility to intermodulation and de-sensitization.

Vector Diversity
An ideal diversity system constructively combines all the energy available at both antennas. Traditional “true diversity” or “ratio diversity” methods use two complete receivers and blend the audio. This works well for FM and Digital Hybrid systems, but falls short of the ideal for today’s all-digital modes. The DCR822’s Vector Diversity subsystem smoothly and continuously combines RF signals from two receiver front ends per channel, with differing phase angles in order to obtain maximum energy. Not only does this method deliver clean, artifact-free performance in all modes, it is actually able to take two signals compromised by multipath interference and reassemble them into a usable signal.

Compatibility
The DCR822 offers compatibility with the D-Squared and Duet digital transmitters, including the DBu, DHu, DPr, DCHT, and M2T, and backward compatibility with any Digital Hybrid Wireless¨ transmitters including the SM and SMWB series, WM, HM Series, MM400 Series, HH Series, LT, LMb, UM400 Series, and SSM.

SmartNRª
With a noise floor at -120 dBV and a frequency response to 20 kHz, high frequency noise in the source audio is more apparent than in conventional wireless systems. The Smart NR algorithm has three mode. When OFF, no noise reduction is performed. When NORMAL is selected, enough noise reduction is applied to remove most of the hiss from the mic preamp and some of the hiss from lavaliere microphones. When FULL is selected, enough noise reduction is applied to remove most of the hiss from nearly any signal source of reasonable quality, assuming levels are set correctly at the transmitter.

Recording Function
The DCR822 can record received audio on a microSD card, in the industry standard .wav (BWF) file format, at 24 bits, 48 kHz for compatibility with any audio or video editing software.