User’s Manual LR-500 Programmable Display Receiver LR-400 Display Receiver LR-300 Receiver Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.com Don’t miss a single sound. Listen.
Welcome to Listen! Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you the highest quality products and prompt, efficient customer care. Our products are manufactured in an ISO-9000 factory that has been independently certified to the highest quality standards. We stand ready to answer any questions you might have during installation or in the operation of our products.
LR-500 User’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Table of Contents Receivers Table of Contents LR-500 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 LR-400 User’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 LR-400 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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User’s Manual LR-500 Programmable Display Receiver Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.com Don’t miss a single sound. Listen.
LR-500 Introduction LR-500 Package Contents Listen Part Number · · · 72 MHz: LR-500-072 216 MHz: LR-500-216 LR-500 (72MHz or 216MHz) Warranty Card Receiver User Manual Optional Accessories See pages 70-71.
Architectural Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LR-500 Specifications LR-500 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 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 63Hz to 15KHz, ±3dB at 72MHz, or of 63Hz to 10kHz, ± 3dB at 216MHz.
Specification Set Up Controls Controls User Controls Volume, channel UP/DOWN, SEEK. All controls except volume are electronically lockable. Programming Unit can be programmed so that only desired channels are displayed. Squelch can be adjusted for sensitivity and signal capture control. Channel selection can be locked by holding the SEEK button 5 seconds.
LR-500 Quick Reference Quick Reference LR-500 Front 3.5mm Input Jack A Listen earpiece or headset connects here. Look & Listen™ display shows receive level, channel, battery status, PROGRAM mode, whether a channel is locked, and whether a channel is locked out from selection (PROGRAM mode). See closeup on page 10. Use UP and DOWN buttons to select a channel. Press and hold both buttons for 5 seconds to enter PROGRAM mode. The PGM icon will appear in the display.
Battery Select Switch LR-500 Top of Unit SQ Switch Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the Alkaline position. LED indicators · Steady Red: Normal operation · Slow Flashing: Battery is low · Slow Flashing while charging: Unit is charging 3.5mm Input Jack A Listen earpiece or headset connects here.
LR-500 Quick Reference Quick Reference LR-500 Look & Listen™ Display Dots indicate the relative RF signal strength. Indicates the unit is in PROGRAM mode. To enter PROGRAM mode, press and hold the UP and DOWN keys until the PGM icon appears in the display. To exit PROGRAM mode let unit sit idle for 5 seconds. See page 16 for complete instructions. Indicates the currently tuned channel Battery level indicator.
LR-500 Setup Instructions LR-500 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent, please contact Listen Technologies Corporation technical support for assistance. See page 69 for contact information. Open the front access door 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 ¼ turn counterclockwise.
LR-500 Setup Instructions LR-500 Setup Instructions continued Set SQ switch The SQ switch is inside the battery compartment next to the Battery Select switch. The unit is shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide the switch to the OFF position (to the right). See page 58 for more information on SQ.
LR-500 Setup Instructions LR-500 Setup Instructions continued Connect an Earphone or Headset 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. Turn the Unit On 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 LR-500 Operation Instructions 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! Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons on the receiver.
LR-500 Operation LR-500 Operation Instructions continued Find an audio transmission using SEEK Another way to find a channel on the LR-500 is to use the SEEK button. When you do this, the Listen receiver looks for the next active channel. Sometimes the unit will mistake interference for a real broadcast signal. If you get interference, press the SEEK button again. The unit may stop on a channel that is close to the actual broadcast channel, in which case the channel will sound noisy or distorted.
LR-500 Programming 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 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 Squelch Squelch Programming Instructions Squelch Programming To · · · enter Squelch programming mode Turn the unit off Press and hold the seek button; while still holding seek turn the ON/OFF dial to turn the unit on. Release the seek button when the Listen name disappears and a two digit display is seen. To adjust the Squelch level · Use the Channel UP and DOWN buttons to raise or lower the squelch sensitivity settings.
The LR-500 and all Listen receivers are unique because they have SmartCharge™ chargers built in. When any of these units are connected Connect LA-202 to an LA-202 wall transformer or dropped into a Listen charging case, here and plug it NiMH batteries will be charged. into an AC wall outlet. 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 Charging Batteries LR-500 Charging Batteries continued During the charge cycle, the red LED on top of the Listen product will flash slowly. When charging is completed, the LED will turn off. It is not necessary to unplug the charger; however, if you unplug the unit from the charger and then plug it back in, it will begin the 13-hour charge cycle over again. When not using the LR-500, it is recommended to leave the unit on the charger.
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.
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User’s Manual LR-400 Display Receiver Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.com Don’t miss a single sound. Listen.
LR-400 Welcome to Listen! LR-400 Package Contents Listen Part Number · · · 72 MHz: LR-400-072 216 MHz: LR-400-216 LR-400 (72MHz or 216MHz) Warranty Card Receiver User Manual Optional Accessories See pages 70-71.
Architectural Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LR-400 Specifications 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 63Hz to 15KHz, ± 3dB at 72MHz, or of 63Hz to 10kHz, ± 3dB at 216MHz.
Specification Set Up Controls User Controls Controls Programming LCD Display Indicators Power LED Battery Type Battery Life (Listen batteries) Battery Charging (NiMH only) Power Supply Connector Compliance 16mW maximum, impedance 32 Ohms LR-400-072 LR-400-216 Alkaline/NiMH batteries and SQ enable/disable and programmable squelch setting.
LR-400 Quick Reference Quick Reference LR-400 Front LED - when lit, indicates unit has power. LR-400 Top of Unit ON/OFF & VOLUME control dial LED indicators · Steady Red: Normal operation · Slow Flashing: Battery is low · Slow Flashing while charging: Unit is charging 3.5mm Input Jack A Listen earpiece or headset connects here. Look & Listen™ Display shows receive level, channel, battery status, and whether a channel is locked. See close-up on page 30. 3.
Battery Select Switch Use UP and DOWN buttons to select a channel. SEEK button allows the user to change channels or to lock on a channel. LR-400 Quick Reference Quick Reference LR-400 Inside Access Door Adjustable Squelch: The default factory preset for squelch is 03.(See page 37 for Squelch programming information) SQ Switch Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the Alkaline position.
LR-400 Quick Reference Quick Reference LR-400 Look & Listen™ Display Dots indicate the relative RF signal strength. When there is a full signal the unit will display all 8 dots. Indicates the currently tuned channel Battery level indicator. The indicator flashes, along with the red LED on top of the unit, to alert you when the battery is low and needs to be charged or changed. When the padlock is visible, the channel is locked. Press and hold SEEK for 5 seconds to unlock or lock.
LR-400 Setup Instructions LR-400 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent, please contact Listen Technologies Corporation technical support for assistance. See page 69 for contact information. Open the front access door 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 ¼ turn counterclockwise.
LR-400 Setup Instructions LR-400 Setup Instructions continued Set SQ switch The SQ switch is inside the battery compartment next to the Battery Select switch. The unit is shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide the switch to the OFF position (to the right). See page 58 for more information on SQ.
Turn the Unit On 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. If they do not, make sure you have installed the batteries correctly and that you are using fully charged batteries. Select Channel(s) See page 56 for complete channel selection information.
LR-400 Operation LR-400 Operation Instructions 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! Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons on the receiver.
LR-400 Operation LR-400 Operation Instructions continued Find an audio transmission using SEEK Another way to find a channel on the LR-400 is to use the SEEK button. When you do this, the Listen receiver looks for the next active channel. Sometimes the unit will mistake interference for a real broadcast signal. If you get interference, press the SEEK button again. The unit may stop on a channel that is close to the actual broadcast channel, in which case the channel will sound noisy or distorted.
LR-400 Squelch 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 Squelch Squelch Programming Instructions Squelch Programming To · · · enter Squelch programming mode Turn the unit off Press and hold the seek button; while still holding seek turn the ON/OFF dial to turn the unit on. Release the seek button when the Listen name disappears and a two digit display is seen. To adjust the Squelch level · Use the Channel UP and DOWN buttons to raise or lower the squelch sensitivity settings.
LR-400 Charging Batteries 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 Connect LA-202 an LA-202 wall transformer or dropped into a Listen charging case, NiMH here and plug it 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.
During the charge cycle, the red LED on top of the Listen product will flash slowly. When charging is completed, the LED will turn off. It is not necessary to unplug the charger; however, if you unplug the unit from the charger and then plug it back in, it will begin the 13-hour charge cycle over again. When not using the LR-400, it is recommended to leave the unit on the charger. The charger provides a “maintenance” charge that keeps the battery at 100%.
LR-400 Wall Transformer 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.
User’s Manual LR-300 Receiver Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.com Don’t miss a single sound. Listen.
LR-300 Introduction LR-300 Package Contents Listen Part Number · · · 72 MHz: LR-300-072 LR-300-072 (72MHz) Warranty Card Receiver User Manual Optional Accessories See pages 70-71.
Architectural Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LR-300 Specifications 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 63Hz to 15KHz, ± 3dB at 72MHz. 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.
Specification Indicators LED Battery Type Battery Life (Listen batteries) Battery Charging (NiMH only) Power Power Supply Connector Compliance Physical LR-300-072 Red, illuminates when unit is on. Flashes when batteries are low. Flashes when charging. Flashes when locked and user attempts to seek to another channel. Two AA batteries, alkaline or NiMH 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362) Fully automatic, 14 hours 2.3mm OD by 0.7mm ID, barrel type connector. 7.
LR-300 Quick Reference 46 Quick Reference LR-300 Front 3.5mm Input Jack A Listen earpiece or headset connects here. LED - when lit, indicates unit has power.
Battery Select Switch BATTERY SELECT LR-300 Top of Unit SEEK button allows the user to change channels or to lock on a channel. LED indicators · Steady Red: Normal operation · Slow Flashing: Battery is low · Slow Flashing while charging: Unit is charging LR-300 Quick Reference Quick Reference LR-300 Inside Access Door SQ Switch Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the Alkaline position.
LR-300 Setup LR-300 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent, please contact Listen Technologies Corporation technical support for assistance. See page 69 for contact information. Open the front access door 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 ¼ turn counterclockwise.
Place Batteries in Unit LR-300 Setup LR-300 Setup Instructions continued Place two AA batteries in the compartment, making note of the battery polarity shown in the battery compartment, and again verifying that the BATTERY SELECT switch is in the correct position for the batteries you are using. (ALK should be selected for all battery types other than NiMH). NOTE: Listen uses 1800mAh (milli-Amp-hour) constant current NiMH (Nickel Metal Hydride) batteries.
LR-300 Operation LR-300 Operation Instructions 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! Find an audio transmission using SEEK To find a channel on the LR-300 use the SEEK button.
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-300, when the channel is locked the red LED on the top of the unit will flash when you press the SEEK button.
LR-300 Charging Batteries 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. Connect LA-202 here and plug it into an AC wall outlet. 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.
During the charge cycle, the red LED on top of the Listen product will flash slowly. When charging is completed, the LED will turn off. It is not necessary to unplug the charger; however, if you unplug the unit from the charger and then plug it back in, it will begin the 13-hour charge cycle over again. When not using the LR-300, it is recommended to leave the unit on the charger. The charger provides a “maintenance” charge that keeps the battery at 100%.
LR-300 Wall Transformer 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 Listen SQ™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 RF Reception Maximization Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 72 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel Selection 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.
Notes in regard to using 72MHz and 216MHz systems i. 72MHz in a secondary frequency band. This means that other transmitters are licensed to use these frequencies. Thus, you may experience interference from paging transmitters and other type transmissions. You will need to find a clear channel by listening to all the wide band channels. Channel Selection Channel Selection continued ii. 216MHz is a primary frequency band and no other types of transmissions are authorized to use it.
Listen SQ™ 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 ListenSQ™. 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.
For proper and dependable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. The following strategies should be used 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. RF Reception Strategies RF Reception Maximization Strategies b. Eliminate or minimize obstructions between the transmitter and receivers. c.
72MHz Compatibility Chart 60 72MHz Compatibility Chart Updated 03.16.04 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.
Frequency MHz 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 75.8500 75.8750 75.9000 75.9250 75.9500 75.
216MHz Compatibility Chart 216MHz Compatibility Chart Updated 03.16.04 Frequency MHz Listen 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.
Frequency MHz Listen 216.5125 216.5250 216.5375 216.5625 216.5750 216.5875 216.6125 216.6250 216.6375 216.6625 216.6750 216.6875 216.7125 216.7250 216.7375 216.7625 216.7750 216.7875 216.8125 216.8250 216.8375 216.8625 216.8750 216.8875 216.9125 216.9250 216.9375 216.9625 216.9750 216.
Receiver Troubleshooting Receiver Troubleshooting - LR-300, LR-400, LR-500 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.
I cannot pick up the signal on the receiver. Check to make sure the receiver and the transmitter are on the same frequency and channel. Also make sure the receiver is in broadcast range of the transmitter. Receiver Troubleshooting Receiver Troubleshooting continued I can pick up the signal on the receiver, but it sounds like it’s not tuned in. Check to make sure the transmitter and receiver are on exactly the same channel number/letter.
Receiver Troubleshooting Receiver Troubleshooting continued I cannot change channels when pressing the UP and DOWN buttons or the SEEK button. The unit is locked. Press the SEEK button for 5 seconds to unlock. When I change channels, only certain channels are accessible. The unit has been programmed to tune to only certain channels (LR-500 only). You can change these channel lock-out selections by re-programming the unit (see page 16). My batteries are not charging.
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 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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Warranty Warranty Listen Technologies Corporation (Listen) warrants its receivers (LR-300, LR-400, LR-500) 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. All other products and accessories are warranted for ninety days from date of purchase. This warranty is only available to the original end purchaser of the product and cannot be transferred.
Optional Accessories 70 Optional Accessories Earphone Options Ear Speaker Ear Speaker Dual Ear Speaker LA-164 LA-161 LA-162 Stereo Headset Neckloop LA-165 LA-166
Optional Accessories Optional Accessories Connector Options Consumer Camcorder Cable Sacrificial Cable Professional Camcorder Cable LA-265 LA-275 LA-266 71
72 Notes
Notes 73
Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.