Listen Technologies LR-4200-072 Intelligent DSP RF Receiver (72 MHz)
Vendor: Listen Technologies
Available
Listen Technologies LR-4200-072 Intelligent DSP RF Receiver (72 MHz)
The LR-4200-072 Intelligent DSP RF Receiver from Listen Technologies offers outstanding audio clarity and quality with the best range and reception in its class. The LR-4200-072 is the smallest device of its kind and a member of our Intelligent Digital Signal Processing (iDSP) series, creating a tiny gadget that won't burden the user. Each receiver is simple to wear thanks to an integrated neck loop/lanyard, and the DSP loop driver improves listening for anybody using a hearing aid with a T-coil. Dual 3.5mm output jacks also allow receivers to be shared between users.
Each receiver is equipped with a micro USB connection which can be used with free iDSP software for charging, set up, programming, inventory management and firmware updates. Extended speaking sessions, presentations and more can be challenging for other devices, but the LR-4200-072 incorporates advanced Lithium-ion rechargeable batteries that offer long life and reliable power. Charge status, along with channel information and volume level, are easy to read on the integrated OLED display. From classrooms to boardrooms, conferences and more, the LR-4200-072 is an outstanding receiver choice for any venue looking to offer convenient, reliable assistive listening.
Audio
System Distortion | < 2% total harmonic distortion (THD) at 80% deviation |
Output/s | Two (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm |
System Frequency Response | 50 Hz - 15 kHz (±3 dB) |
System Signal to Noise Ratio | SQ enabled 80 dB, SQ disabled 60 dB |
Controls
User Controls | Power, up/down volume |
Programming | Via software and USB port |
Set-up Controls | Press and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel |
Indicators
LEDs | Flashes when batteries are low or to indicate charging, solid when fully charged |
Display | Channel designation, battery level, unit number, charging status |
RF
Frequency Range | 72.0250 - 75.9500 MHz |
Number of Channels | 17 wide band, 40 narrow band |
Sensitivity | .6uV typical, 1 uV maximum for 12 dB sinad |
Frequency Accuracy | ± .005% stability 32 to 122 ºF (0 to 50 ºC) |
Squelch | Programmable in 20 steps, automatic on loss of RF signal |
Antenna Type | Uses ear phone/neck loop lanyard and short ear phone cable or standard earphone cable |
Power
Power Supply | Micro USB connector, 5 V, 500 mA |
Battery Type | Lithium Ion 3.7 Vdc, 1200 mAh |
Battery Life | 8 Hours of continuous use |
Battery Charging Time | Fully charged in 2.5 Hours |
Physical
Color | Black |
Unit Weight with Batteries | 2.40 oz. (68 g) |
Shipping Weight | 3.20 oz. (91 g) with 1.0 lbs. (454 g) minimum |
Dimensions (H x W x D) | 3.75 x 2.00 x 0.64 in. (9.6 x 5 x 1.7 cm) |
Unit Weight | 1.60 oz. (45 g) |
Dimensions with Belt Clip | 3.75 x 2.00 x 0.80 in. (9.6 x 5.0 x 2.1 cm) |