Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you with the highest quality products available. We take great pride in their outstanding performance because we care that you are completely satisfied. That’s why we independently certify them to the highest quality standards and back them with a limited lifetime guarantee. We stand ready to answer any questions you might have during installation or in the operation of our products.
Supplementary Information Channel Selection Listen SQ™ RF Reception Maximization Strategies 72 MHz Frequency Compatibility Table 216 MHz Frequency Compatibility Table Troubleshooting Compliance Notice FCC Statement Warranty Contacting Listen Optional Accessories 44 44 45 46 47 48 49 51 51 52 52 53 LR-400 3 5 19 21 33 35 LR-500 LR-500 Manual LR-500 Table of Contents LR-400 Manual LR-400 Table of Contents LR-300 Manual LR-300 Table of Contents Table of Contents Receivers Table of Contents LR-300 Infor
LR-500 Table of Contents 6 7 7 7 9 11 13 14 14 15 16 LR-500 Package Contents Architectural Specifications Specifications Quick Reference Setup Instructions Operation Instructions Programming Instructions Squelch Information Squelch Programming Charging Batteries Wall Transformer Operation 5
LR-500 Package Contents LR-500 Contents LR-500 • LR-500 Portable Programmable Display FM Receiver (72 MHz, 216 MHz) Listen Part Number •LR-500-072 (72 MHz) •LR-500-216 (216 MHz) 3 3 6
LR-500 Specifications Architectural Specifications LR-500 The FM reciever shall be capable of receiving on 57 wide and narrow band channels with a SNR of 80dB or greater. The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall be capable of seeking channels. The device shall have an adjustable squelch. The device shall have an audio frequency response of 63 Hz to 15 KHz, ± 3dB at 72 MHz, or 63 Hz to 10 KHz, ±3dB at 216 MHz.
LR-500 Quick Reference 3.5 mm Output Jack: Connect a Listen earphone(s) here. LED: When lit, indicates unit has power. When batteries are low or charging the LED flashes On/Off and Volume Control Dial LR-500 Articulating Flexible Antenna: Place in upright position when in use. Look&Listen™ Display: Shows receive level, channel, programming, battery status, and lock status. Power/Charging Port SEEK Button: Allows the user to search for or lock onto an active channel.
LR-500 Setup Instructions 1 Remove the product 2 Open the front access door Remove outer packaging and plastic cover. Inspect for physical damage. If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit. To unlock the door, rotate the lock 1/4 turn counterclockwise. 3 LR-500 Grip the two tabs with your thumb and index finger and pull the door downward.
LR-500 Setup Instructions Connect an Earphone or Headset 7 Turn the Unit On 8 Select Channel(s) 9 Set Squelch 10 Program Channels LR-500 6 Your headset or earphone will connect to the jack on the top of the unit. Either mono or stereo connectors may be used with a Listen receiver. Make certain you push the plug all the way into the jack. Receivers are turned on by rotating the volume dial counterclockwise. The red LED on top of the unit should activate and the LCD display should illuminate.
LR-500 Operation Instructions 1 Make Sure the Unit is On Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Listen receivers use the cable of the earphone or headset as a receiving antenna. Be careful when turning the unit on - if you turn the knob too far you might get too much volume in your earphone! 2 Select a Channel LR-500 Select the channel to match the transmission channel by pressing the UP and DOWN buttons on the receiver.
LR-500 Operation Instructions 6 To Lock into Only One Channel Press and hold the SEEK button for 5 seconds to lock a receiver onto the currently tuned channel. Press and hold the button again to unlock. When locked the LED on top of the unit will flash when you press the SEEK button. Is the Channel Locked on My Receiver? LR-500 On the LR-500, when the channel is locked, the padlock icon will appear on the display.
LR-500 Programming Instructions The LR-500 Display Receiver has some special features not available in the other receivers: you may lock out unwanted channels, and you can adjust the squelch in the unit.
LR-500 Squelch Squelch The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch on your receiver can be adjusted so that it will mute the audio on different RF signal strengths.
LR-500 Charging Batteries The LR-500 and all Listen receivers are unique because they have SmartCharge™ chargers built in. When any of these units are connected to an LA-202 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged. To charge the batteries using the LA-202 wall transformer, plug the transformer into the jack marked “PWR/CHG” on the side of the unit. The unit can be operated while the batteries are charging.
LR-500 Wall Transformer Operation The LR-500 will operate normally when connected to a wall transformer. Use Listen part number LA-202, available from any Listen dealer. Connect the wall transformer to the jack on the side of the LR-500 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet. You do not need to have batteries installed in the LR-500 to operate it with a wall transformer.
LR-400 Table of Contents Package Contents Architectural Specifications Specifications Quick Reference Setup Instructions Operation Instructions Squelch Information Squelch Programming Charging Batteries Wall Transformer Operation 22 23 23 24 25 27 29 29 30 31 LR-400 21
LR-400 Package Contents LR-400 Contents • LR-400 Portable Display FM Receiver (72 MHz, 216 MHz) Listen Part Number LR-400 •LR-400-072 (72 MHz) •LR-400-216 (216 MHz) 22
LR-400 Specifications Architectural Specifications The FM receiver shall be capable of receiving on 57 wide and narrow band channels with a SNR of 80dB or greater. The receiver shall be capable of seeking channels. The device shall have an adjustable squelch. The device shall have an audio frequency response of 63 Hz to 15 KHz, ± 3dB at 72 MHz, or of 63 Hz to 10 kHz, ± 3dB at 216 MHz.
LR-400 Quick Reference 3.5 mm Output Jack: Connect a Listen earphone(s) here. LED: When lit, indicates unit has power. When batteries are low or charging the LED flashes On/Off and Volume Control Dial Look&Listen™ Display: Shows receive level, channel, programming, battery status, and lock status. Power/Charging Port SEEK Button: Allows the user to search for or lock onto an active channel. Channel Select Buttons Battery Select Switch: Choose the type of batteries being used - Alkaline or NiMH.
LR-400 Setup Instructions 1 Remove the product 2 Open the front access door Remove outer packaging and plastic cover. Inspect for physical damage. If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit. To unlock the door, rotate the lock 1/4 turn counterclockwise. Grip the two tabs with your thumb and index finger and pull the door downward.
LR-400 Setup Instructions 6 Connect an Earphone or Headset 7 Turn the Unit On 8 Select Channel(s) 9 Set Squelch Your headset or earphone will connect to the jack on the top of the unit. Either mono or stereo connectors may be used with a Listen receiver. Make certain you push the plug all the way into the jack. Receivers are turned on by rotating the volume dial counterclockwise. The red LED on top of the unit should activate and the LCD display should illuminate.
LR-400 Operation Instructions 1 Make Sure the Unit is On Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Listen receivers use the cable of the earphone or headset as a receiving antenna. Be careful when turning the unit on - if you turn the knob too far you might get too much volume in your earphone! 2 Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons on the receiver.
LR-400 Operation Instructions 6 To Lock into Only One Channel Press and hold the SEEK button for 5 seconds to lock a receiver onto the currently tuned channel. Press and hold the button again to unlock. When locked the LED on top of the unit will flash when you press the SEEK button. Is the Channel Locked on My Receiver? On the LR-400, when the channel is locked, the padlock icon will appear on the display.
LR-400 Squelch Squelch The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch on your receiver can be adjusted so that it will mute the audio on different RF signal strengths.
LR-400 Charging Batteries The LR-400 and all Listen receivers are unique because they have SmartCharge™ chargers built in. When any of these units are connected to an LA-202 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged. 1 To charge the batteries using the LA-202 wall transformer, plug the transformer into the jack marked “PWR/CHG” on the side of the unit. The unit can be operated while the batteries are charging.
LR-400 Wall Transformer Operation The LR-400 will operate normally when connected to a wall transformer. Use Listen part number LA-202, available from any Listen dealer. Connect the wall transformer to the jack on the side of the LR-400 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet. You do not need to have batteries installed in the LR-400 to operate it with a wall transformer.
LR-300 Table of Contents Package Contents Architectural Specifications Specifications Quick Reference Setup Instructions Operation Instructions Charging Batteries Wall Transformer Operation 36 37 37 38 39 41 42 43 LR-300 35
LR-300 Package Contents LR-400 Contents • LR-300 Portable Digital FM Receiver(72 MHz or 216 MHz) Listen Part Number LR-300 •LR-300-072 (72 MHz) 36
LR-300 Specifications Architectural Specifications The FM receiver shall be capable of receiving on 17 wide band channels and have a SNR of 80dB or greater. The receiver shall be capable of seeking channels. The device shall have a squelch. The device shall have an audio frequency response of 63 Hz to 15 KHz, ± 3dB at 72 MHz. The device shall incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset and listen to audio normally.
LR-300 Quick Reference 3.5 mm Output Jack: Connect a Listen earphone(s) here. LED: When lit, indicates unit has power. When batteries are low or charging the LED flashes On/Off and Volume Control Dial Power/Charging Port SEEK Button: Allows the user to search for or lock onto an active channel. Front Door Lock Battery Select Switch: Choose the type of batteries being used - Alkaline or NiMH. SQ™ Switch: Turns SQ™ On/Off. LR-300 Battery Compartment: Place two (2) AA batteries in compartment.
LR-300 Setup Instructions 1 Remove the product 2 Open the front access door Remove outer packaging and plastic cover. Inspect for physical damage. If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit. To unlock the door, rotate the lock 1/4 turn counterclockwise. Grip the two tabs with your thumb and index finger and pull the door downward.
LR-300 Setup Instructions 6 Connect an Earphone or Headset 7 Turn the Unit On Your headset or earphone will connect to the jack on the top of the unit. Either mono or stereo connectors may be used with a Listen receiver. Make certain you push the plug all the way into the jack. Receivers are turned on by rotating the volume dial counterclockwise. The red LED on top of the unit should activate and the LCD display should illuminate.
LR-300 Operation Instructions 1 Make Sure the Unit is On Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Listen receivers use the cable of the earphone or headset as a receiving antenna.
LR-300 Charging Batteries The LR-300 and all Listen receivers are unique because they have SmartCharge™ chargers built in. When any of these units are connected to an LA-202 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged. 1 To charge the batteries using the LA-202 wall transformer, plug the transformer into the jack marked “PWR/CHG” on the side of the unit. The unit can be operated while the batteries are charging.
LR-300 Wall Transformer Operation The LR-300 will operate normally when connected to a wall transformer. Use Listen part number LA-202, available from any Listen dealer. Connect the wall transformer to the jack on the side of the LR-300 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet. You do not need to have batteries installed in the LR-300 to operate it with a wall transformer.
Channel Selection It is highly recommended that after channel selection has been achieved, you lock the channel so that it cannot be changed by the user. To accomplish lock on receivers, press and hold seek for 5 seconds. Repeat the process to unlock. It is important to choose channels that are free from interference to achieve proper operation of your Listen equipment. This process is trial and error.
Listen SQ™ We are accustomed to listening to low noise, high fidelity audio (delivered via CD, DVD, etc.). FM radio systems, such as those made by Listen, have more inherent noise compared to most sound systems. To reduce noise of our systems, Listen now offers a noise reduction technology called Listen SQ™. Both the transmitter and receiver must have SQ™ on to achieve the desired results. SQ™ is now available on new Listen systems, including the system you received in this shipment.
RF Reception Maximization Strategies For proper and dependable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. The following strategies should be used to maximize this signal: a. When designing and installing your system, keep in mind that the location of both the transmitter and receivers is critical to maximizing signal strength. b. Eliminate or minimize obstructions between the transmitter and receivers. c.
72 MHz Compatibility Chart Frequency MHz 72.0250 72.0500 72.0750 72.1000 72.1250 72.1500 72.1750 72.2000 72.2250 72.2500 72.2750 72.3000 72.3250 72.3500 72.3750 72.4000 72.4250 72.4500 72.4750 72.5000 72.5250 72.5500 72.5750 72.6000 72.6250 72.6500 72.6750 72.7000 72.7250 74.7500 74.7750 Frequency MHz 75.2250 75.2500 75.2750 75.3000 75.3250 75.3500 75.3750 75.4000 75.4250 75.4500 75.4750 75.5000 75.5250 75.5500 75.5750 75.6000 75.6250 75.6500 75.6750 75.7000 75.7250 75.7500 75.7750 75.8000 75.8250 75.
Information 216 MHz Compatibility Chart 48 Frequency MHz 216.0125 216.0250 216.0375 216.0625 216.0750 216.0875 216.1125 216.1250 216.1375 216.1625 216.1750 216.1875 216.2125 216.2250 216.2375 216.2625 216.2750 216.2875 216.3125 216.3250 216.3375 216.3625 216.3750 216.3875 216.4125 216.4250 216.4375 216.5125 216.
Troubleshooting LR-300, LR-400, LR-500 Receivers Troubleshooting The receiver has no power. Make sure the unit has either fully charged batteries or a Listen approved wall transformer connected. Make sure the VOLUME knob has been rotated to the ON position. If this does not work, try a different set of batteries. Make sure the batteries are installed properly. There is no audio. Make sure you have turned the volume control up.
Troubleshooting Troubleshooting Users keep changing channels. You can prevent users from changing channels by locking in the channel selection. This is done by pressing and holding the SEEK button for 5 seconds. When the channel is locked, the padlock icon will appear on the LR-400 and LR-500 displays. On the LR-300, the LED will flash when the channel is locked and seek is pressed. In addition, you can lock the access doors to the units.
Compliance Notice and FCC Statement Compliance Notice This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) These devices may not cause harmful interference, and (2) these devices must accept any interference received, including interference that may cause undesirable operation. FCC Statement This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules.
Warranty & Contacting Listen Warranty Listen Technologies Corporation (Listen) warrants its transmitters and receivers (LT-82, LT-700, LT-800, LR-100, LR-42, LR-44, LR-300, LR-400, LR-500, LR-600) to be free from defects in workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase.
Optional Accessories v Earphone Options LA-164 LA 164 4 Ear Speaker LA-165 Stereo Headphones v LA-161 Single Ear Bud LA-166 Neck Loop LA-162 Stereo Ear Buds LA-170 Behind-the-Head Stereo Headphones Connector Options LA-265 Consumer Camcorder Cable LA-266 Professional Camcorder Cable LA-275 Sacrificial Cable Information 53
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Listen Technologies Corporation 14912 Heritagecrest Way Bluffdale, Utah 84065-4818, U.S.A. +1.801.233.8992 +1.800.330.0891 North America +1.801.233.8995 fax www.listentech.
