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LR-400-072
Portable Display RF Receiver (72 MHz)
Configuration:
LR-400-072 Portable Display RF Receiver (72
MHz)
LR-400-216 Portable Display RF Receiver (216
MHz)
Product Overview: Offering the same high-performance audio and convenient recharging features as our other receivers,
the LR-400-072 Portable Display RF Receiver is an affordable option for establishing or expanding your assistive listening
system. Capable of receiving up to 17 wide-band or 40 narrow-band channels, the LR-400-072 features a digital LCD display,
channel seeking capabilities, and compatibility with mono or stereo headphones. The LCD display provides each user with
channel selection, battery level, and signal strength information, and an LED on the top of each receiver indicates power
status and low battery conditions. Approved for assistive listening use in the U.S. by the FCC, the LR-400-072 Portable
Display RF Receiver is a cost-effective way to provide assistive listening to your customers, clients, or patrons.
Highlights:
Cost-effective solution to beginning or expanding your RF assistive listening system
Can receive up to 17 wide-band or 40 narrow-band channels
Easy-to-read LCD display with battery status, channel information, and signal strength readings
Channel seek capabilities
80 dB signal-to-noise ratio for industry-leading sound quality
Built-in SmartCharge feature prevents overcharging
Simple drop-in charging compatible with Listen Technologies’ charging cases and plugs
Compatible with mono and stereo headphones
Limited lifetime warranty and hassle free support from Listen Technologies
Includes:
One (1) LR-400 Portable Display RF Receiver
One (1) Quick reference card
Product Specification: Portable Display RF Receiver (72 MHz)
Audio
Frequency Response 50 Hz - 15 kHz (±3 dB)
Signal-to-Noise Ratio SQ enabled 80 dB, SQ disabled 60 dB
Audio Output Jacks 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW
maximum, impedance 32 ohm
Distortion < 2% total harmonic distortion (THD) at 80% deviation
Controls
User Controls Channel up/down, SEEK, volume, Alkaline/NiMH batteries, SQ enable/disable
Programming Channel lock, squelch
Indicators
LCD Channel designation, battery level, battery charging, RF signal strength and
channel lock
Listen Technologies Corporation * 14912 Heritage Crest Way * Bluffdale * Utah 84065-4818 U.S.A.
Portable Display RF Receiver (72 MHz) Page 1 of 2
+1.801.233.8992 * +1.800.330.0891 North America * +1.801.233.8995 Fax
Listen Technologies Corporation All rights reserved 91407 - Created March 24, 2017
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LR-400-072
Portable Display RF Receiver (72 MHz)
Product Specification: Portable Display RF Receiver (72 MHz)
LEDs Red, illuminated when unit is on, flashes when batteries are low or to indicate
charging, flashes when locked and SEEK is pushed
RF
Frequency Range 72.025 - 75.950 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 earphone cable
Power
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-208)
Power Supply Connector 0.09 in. (2.3 mm) OD by 0.7 mm ID, barrel type connector 7.5 VDC, center
positive < 250 mA, drop in contact points for use with Listen charging cases
Battery Type Two (2) AA batteries, alkaline or NiMH
Battery Life 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging Time Fully automatic, 13 hours
Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB
Physical
Width 2.75 in. (7.0 cm)
Height 4.25 in. (10.8 cm)
Length 1.50 in. (3.8 cm)
Unit Weight with Batteries 5.8 oz (164 g)
Shipping Weight 1.0 lbs. (0.5 kg)
Weight 3.9 oz (111 g)
Door Manually lockable, SEEK/channel select behind the door
Environmental
Temperature - Operation 14 to 104 ºF (-10 to 40 ºC)
Temperature - Storage -4 to 122 °F (-20 to 50 °C)
Relative Humidity 0 to 95% relative humidity, non-condensing
Compliance
Powered by TCPDF (www.tcpdf.org)
Safety RoHS
RF FCC Part 15, Part 90, Industry Canada
Listen Technologies Corporation * 14912 Heritage Crest Way * Bluffdale * Utah 84065-4818 U.S.A.
Portable Display RF Receiver (72 MHz) Page 2 of 2
+1.801.233.8992 * +1.800.330.0891 North America * +1.801.233.8995 Fax
Listen Technologies Corporation All rights reserved 91407 - Created March 24, 2017
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