Wireless Signal Processing : Beltpack Receivers & Transmitters (Wireless) : Listen Technologies Corporation - LR-400-072

Portable Display RF Receiver (72 MHz)

Series: FM

Model: LR-400-072

Superior Audio Quality – 80 dB signal-to-noise ratio (SNR), setting the industry’s sound quality standard
A choice between 57 channels and many accessory options make Listen products ideal for a wide range of applications
100 % Digital – Listen receivers are digitally-tuned so transmission won’t drift; when you select a channel, it stays on that channel
Uses standard alkaline or nickel-metal hydride (NiMH) batteries.
Built in SmartCharge™ won’t allow batteries to overcharge. Charging circuitry is conveniently built into Listen’s receivers

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The LR-400 Portable Display FM Receiver is a lower cost digital display receiver. It has exceptional audio quality as Listen's full-featured receivers and the same convenient recharging options. The LR-400 can receive up to 17 wide band channels along with 40 narrow bands (72 MHz). The LR-400 has a digital display (LCD) to monitor channel selection, battery level, and signal strength. An LED on top signifies if the unit is on, flashes when batteries are low or locked on a channel if it blinks while pushing SEEK.

Superior Audio Quality – 80 dB signal-to-noise ratio (SNR), setting the industry’s sound quality standard
A choice between 57 channels and many accessory options make Listen products ideal for a wide range of applications
100 % Digital – Listen receivers are digitally-tuned so transmission won’t drift; when you select a channel, it stays on that channel
Uses standard alkaline or nickel-metal hydride (NiMH) batteries.
Built in SmartCharge™ won’t allow batteries to overcharge. Charging circuitry is conveniently built into Listen’s receivers
Transformer charging plug or for the ultimate in convenience drop in charging contacts
Limited Lifetime Warranty with hassle-free support

Wireless Receiver Transmission - FM
Wireless - Yes
Spec Sheet available - Yes

RF Frequency Range 72MHz: 72.025 - 75.975 MHz
Number of Channels: 57 channels 17 wide band, 40 narrow band
Frequency Response: .6 uV typical, 1 uV maximum for 12dB SINAD
Frequency Accuracy: ± .005 % stability 0-50 degrees C (32-122 degrees F)
Antenna: Uses earphone cable
Squelch: Programmable in 20 steps; automatic on loss of RF signal
Compliance: FCC Part 15, Part 90, Industry Canada, RoHS
Frequency Response: 50 - 15,000 Hz - kHz ±3dB. All system specifications are end-to-end.
System Signal to Noise Ratio: 80 dB SQ enabled, A-weighted. SQ disabled: 60dB in 72MHz and 50dB in 216MHz. All system specifications are end-to-end .
System Distortion: <2 % Total harmonic distortion (THD) at 80% deviation. All system specifications are end-to-end
Outputs: 3.5 mm connectors, unbalanced, 0dBu nominal output level, 16 mW maximum, impedance 32 Ohm
Set Up Controls (battery compartment): Alkaline/NiMH batteries, SQ enable/disable
User Controls: Channel up/down, SEEK, volume
Programming: Channel lock, squelch
LCD Display: Channel, lock status, signal strength indication, battery life
LED: Red, illuminated when unit is on. Flashes when batteries are low, to indicate charging or when the unit is locked and SEEK is pushed
Battery Type: Two (2) AA batteries: alkaline or NiMH
Battery Life (Listen batteries): 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only): 13 hours Fully automatic
Power Supply: I/P 120 VAC; O/P 7.5 VDC 250 mA Drop in contact points for use with charging cases Power supply not included (LA-202).
Power supply connector: 2.3 mm OD by 0.7mm ID, barrel type connector 7.5 VDC, center positive <250mA. Drop in contact p
Power Supply Compliance: RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
Dimensions H x W x D: 4.25 x 2.75 x 1.50 (10.8 x 7.0 x 3.8) in. (cm)
Unit Weight: 3.9 (111) oz (g)
Unit Weight with batteries: 5.8 (164) oz (g)
Shipping Weight: 6.1 (173) oz (g)
Door: Manually lockable. SEEK/Channel Select behind door.
Temperature - Operation: -10 to 40 (14 to 104) degrees C ( degrees F)
Temperature - Storage: -20 to 50 (-4 to 122) degrees C ( degrees F)
Humidity: 0 to 95 % relative humidity, non-condensing
Depth: 1.50 in
Height: 4.25 in
Width: 2.75 in
Minimum Frequency Response (Bandwidth): 50 Hz
Maximum Frequency Response (Bandwidth): 15 kHz