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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), 19 wide band with 38 narrow band (216 MHz) and 17 wide band (863 MHz) channels. The LR-400 has a digital display 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.
Please Note: Does not include batteries or earphone/headphone
•Superior Audio Quality - 80 dB (70 dB with 863 MHz) signal-to-noise ratio, setting the industry's sound quality
standard.
•A choice between 57 channels (17 channels with 863 MHz), complete antenna and accessory options make Listen products ideal for a wide range of applications.
•100 % Digital - Listen receivers are digitally-tuned so transmission
won't drift; assurance that when you select a channel, it stays on the channel.
•Uses standard alkaline or NiMH batteries.
•Built in SmartCharge™ won't allow batteries to overcharge. Charging circuitry is conveniently built into Listen's receivers; never worry about unplugging a transformer at a certain time.
•Transformer charging plug or for the ultimate in convenience drop in charging contacts.
•Limited Lifetime Warranty with hassle-free support.
1. An earphone jack (3.5 mm) accepts either mono or stereo headsets. Receiver antenna is built into the earphone cord, eliminating additional wires while maximizing receiver effectiveness.
2. Multifunction LED indicates power on, if batteries are low, if the unit is locked on a channel when SEEK is pressed and charging status.
3. Easy on/off volume control.
4. Look&Listen™ LCD Display shows channel selection, channel lock and battery level.
5. Seeks to find best available broadcast. Also used to adjust squelch in 20 steps which mutes audio on loss of RF signal.
6. Uses two AA batteries. Selectable to use either alkaline or Listen's advanced NiMH Rechargeable AA Batteries. SmartCharge™ incorporated into receiver makes sure each unit receives the most beneficial charge.
7. Digitally tuned with UP, DOWN, and SEEK buttons behind manually lockable door. Electronically lock on channel by holding the SEEK button down 5 seconds to prevent tampering.
8. Manually lockable battery compartment door. 10. Contact points for Listen's drop in charging cases.
9. Charging plug port.
10. Contact points for Listen's drop in charging cases.
11. Exclusive belt clip “loop” prevents unit from slipping off belt or strap.
architectural specifications
LR-400-863
The FM receiver shall be capable of receiving on 17 wide band channels with a SNR of 70dB or greater. The device shall be able to be locked on a single channel. The receiver shall be capable of seeking channels. The device shall have an adjustable squelch. The device shall have an audio frequency response of 50 Hz to 15 KHz, ±3 dB. The device will incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset. The device shall incorporate an LCD display that indicates channel, battery level, low battery, battery charging, and RF signal strength. The receiver shall be able to function in both D• and Local mode. The unit shall operate off of 2 AA batteries. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LR-400-863 is specified.
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Specification |
LR-400-863 |
| RF |
RF Frequency Range |
863.050 - 864.950 MHz |
| Number of Channels |
17 Wideband |
| Sensitivity |
.6uV typical, 1 uV maximum for 12 dB sinad |
| Frequency Accuracy |
± .005% stability 32 to 122º (0 to 50ºC) |
| Antenna |
Integrated External Antenna |
| Squelch |
Programmable in 20 steps, automatic on loss of RF signal
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| Compliance |
CE, ETSI, RoHS |
| Audio |
** All system specifications are wireless end to end** |
| System Frequency Response |
50Hz - 15kHz (+/-3db) |
| System Signal to Noise Ratio |
70db (A-Weighted) |
| System Distortion |
<2% total harmonic distortion (THD) at 80% deviation |
| Output |
3.5 mm connector, unbalanced, 0dBu nominal output level, 16 mW maximum, impedance 32 Ohms |
| Controls |
User Controls |
Channel up/down, SEEK, volume |
| Set-up Controls (battery compartment) |
Alkaline/NiMH battery switch |
| Programming |
Channel Lock, D•/Local, squelch |
| Indicators |
LED |
Red, illuminated when unit is on.Flashes when batteries are low, or charging.Flashes when locked and SEEK is pushed. |
| LCD Display |
Channel Designation, lock status, signal strength indication, battery life |
| Power |
Battery Type |
Type: 2 AA batteries, alkaline or NiMH |
| Battery Life (Listen batteries) |
20 hours alkaline (LA-361), 10 hours NiMH rechargeable (LA-362) |
| Battery Charging (NiMH only) |
Fully Automatic, 13 hours maximum |
| Power Supply (LA-208) |
7.5VDC, center positive 300mA. Drop in contact points for use with charging cases. Power supply and specified line cord not included (LA-208) |
| Power Supply Connector |
2.3 mm OD by .7mm ID, barrel type |
| Power Supply Compliance |
RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant |
| Physical |
Dimensions (H x W x D) |
5.0 x 3.0 x 1.0 in (13 x 7.6 x 2.5 cm) |
| Color |
Dark Grey with white silk screening |
| Unit Weight |
3.9 oz (111g) |
| Unit Weight with batteries |
5.8 oz (164g) |
| Shipping Weight |
1.0 lbs. (0.45kg) |
| Door |
Manually Lockable. Up, down, and power buttons through door. Other controls behind door (see controls) |
| Environmental |
Temperature - Operation |
-10C (14F) to +40C (104F) |
| Temperature - Storage |
-20C (-4F) to +50C (122F) |
| Humidity |
0 to 95% Relative Humidity, non condensing |
Specifications are subject to change without notification |
FAQs
Q. What is the difference between the LR-400 and the LR-500?
A. The LR-500 gives the user an opportunity to lockout unused channels.
Q. Can the LR-400 be used with multiple transmitters?
A. Yes. We recommend the LR-400 for use with multiple transmitters. The LR-400 is programmable and can be set to just those channels you need.
Q. How many receivers can I have in a system?
A. As many as you need, the number is endless.
Q. What is the function of SQ?
A. To reduce noise of our systems, Listen now offers a noise reduction technology called ListenSQ™ (on 72 MHz and 216 MHZ only). Both the transmitter and receiver must have SQ on to achieve the desired results. If you are planning to use this product with older Listen systems or equipment not manufactured by Listen, you should disable SQ.
Q. What is the warranty of Listen receivers?
A. Limited lifetime warranty. The following cases will void the warranty:
• Misuse, dropping, or any other noticeable cosmetic damage
• Charging alkaline batteries instead of NiMH
• Overheating the charging process by closing the lid on the charging case
Q. How long do the batteries last on the LR-400 receiver?
A. Alkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours (72 MHz and 216 MHz). With 863 MHz, Alkaline batteries last 20 hours and NiMH rechargeable batteries last 10 hours.
LR-400 Datasheet
Portable FM Brochure
• LR-400 Portable Display FM Receiver
• Owner's manual (72 MHz & 216 MHz)
• Quick Reference Card (863 MHz)
• Limited Lifetime Warranty Program Card (863 MHz)
• FM System Design Guide and Manual Card (863 MHz)
Please Note: Does not include batteries or earphone/headphone |
