Listen Tech LR-4200-IR Intelligent DSP IR Receiver
The LR-4200-IR receiver from Listen Technologies offers outstanding audio clarity and quality with the best range and reception in its class. Part of our Intelligent Digital Signal Processing (iDSP) line, the LR-4200-IR is the smallest device of its kind, resulting in a compact unit that won’t burden the end user. An integrated neck loop/lanyard makes each receiver easy to wear, and the DSP loop driver offers an improved listening experience for anyone with a T-coil-equipped hearing aid. Dual 3.5mm output jacks also allow receivers to be shared between users.
Key Features
- high-performance IR receiver offering best-in-class sensitivity and range
- Integrated neck loop/lanyard with DSP loop driver for an enhanced T-coil listening experience
- Smallest device of its kind makes it easier to wear and use and for venues to dispense, store and maintain
- OLED display showing channels, battery status, channel status, volume level, and more
- Limited lifetime warranty with hassle-free support
- Lanyard and belt clip options offer convenient and discreet choices for the end user
- Advanced rechargeable battery technology eliminates the costs and hassles associated with frequent battery replacement
- Designed for single-channel applications
Technical Specifications
Audio
System Distortion
< 2% total harmonic distortion (THD) at 80% deviation
Audio Output Jacks
Two (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm, accepts mono or stereo phone plug or LA-430 Intelligent Ear Phone/Neck Loop Lanyard
System Frequency Response
63 Hz – 15 kHz (-3 dB)
System Signal to Noise Ratio
> 60 dB
Controls
User Controls
Power on/off and volume up/down
Programming
Via software and USB port, Auto Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo, Brightness, Channel Name
Set-up Controls
Press and hold up/down volume buttons for 5 seconds to enterchannel adjust, use up/down to select channel
Indicators
Display
OLED – Channel designation, battery level, unit number, charging status, volume status
LED
Flashes when batteries are low or to indicate charging, solid when fully charged
RF
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels
Four (4) selectable channels
Frequency Accuracy
.005% stability 32 to 122 F (0 to 50 C)
Modulation
FM Wideband, -50 kHz deviation max, 50 uS de-emphasis
IR
Coverage Area
30,000 ft (2787 m) single channel with LT-84/LA-141 or 40,000 ft (3716 m) single channel with LT-82/LA-140
Squelch
Programmable in 20 steps, automatic on loss of IR signal
Power Save Mode
Turns unit off after a specified time of no IR signal, default is 30 minutes
Sensitivity
Better than one (1) nW/cm2 @40 dB SNR
Power
Power Supply
Micro USB connector, 5 V, 500 mA
Battery Type
Lithium Ion
Battery Life
8 Hours of typical use
Battery Charging Time
Fully charged in 2.5 Hours
Physical
Color
Flat Black
Unit Weight with Batteries
2.8 oz. (79.4 g)
Shipping Weight
3.5 oz. (99.2 g) with a 1 lbs. (0.45 kg) minimum
Dimensions (H x W x D)
3.75 x 2.0 x 0.64 in. (9.6 x 5.0 x 1.7 cm)
Unit Weight
1.9 oz. (53.9 g)
Dimensions with Belt Clip
3.75 x 2.0 x 0.80 in. (9.6 x 5.0 x 2.1 cm)
Environmental
Temperature – Operation
14 to 104 F (-10 to 40 C)
Temperature – Storage
(-)4 to 122 F (-20 to 50 C)
Relative Humidity
0 to 95% relative humidity, non-condensing
Compliance
Standards
FCC Part 15, ICS-03, CE, RoHS, WEEE, ADA 706, CBC 11B-706
