Listen LR 500 User Manual
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Listen LR 500 User Manual

Portable display fm receiver
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  • Page 3 Should you experience any problems whatsoever with your Listen products, we are ready to help you in any way we can with prompt, efficient customer care. Because at Listen, it’s all about you! And should you have any comments on how we might improve our products or our service, we’re here to listen.

  • Page 5: Table Of Contents

    Receivers Table of Contents LR-500 Manual LR-500 Table of Contents LR-400 Manual LR-400 Table of Contents Supplementary Information Channel Selection Listen SQ™ RF Reception Maximization Strategies 150 MHz Frequency Compatibility Table Troubleshooting Warranty Contacting Listen Optional Accessories...
  • Page 9 LR-500 Table of Contents Package Contents Architectural Specifications Specifications Quick Reference Setup Instructions Operation Instructions Programming Instructions Squelch Information Squelch Programming Charging Batteries Wall Transformer Operation...

  • Page 10: Package Contents

    LR-500 Package Contents LR-500 Contents • LR-500 Portable Programmable Display FM Receiver (150 MHz) Listen Part Number •LR-500-150 (150 MHz)

  • Page 11: Architectural Specifications

    The device shall incorporate an LCD display. The receiver shall incorporate automatic battery charging circuitry. The device shall be able to use of two (2) alkaline or NiMH batteries.

  • Page 12: Quick Reference

    LR-500 Quick Reference LED: When lit, unit is on. When batteries are low or when charging the LED flashes. 3.5 mm Output Jack: Connect a Listen On/Off and Volume Control Dial earphone(s) here. Look&Listen™ Display: Shows receive level, channel, Power/Charging Port programming, battery status, and lock status.

  • Page 13: Setup Instructions

    (ALK should be selected for all battery types other than NiMH). NOTE: Listen provides industrial strength AA alkaline batteries (part number LA-361) and high performance AA Nickel Metal Hydride batteries (part number LA-362). These may be...
  • Page 14 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.

  • Page 15: Operation Instructions

    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.
  • Page 16 LR-500 Operation Instructions 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.

  • Page 17: Programming Instructions

    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. Locking Out Unwanted Channels For applications where users are required to select a channel (such as language interpretation or classrooms), and you don’t want them to have to go through all 32 available channels to find the appropriate channel, you can lock out all channels except the ones you are using in your facility.

  • Page 18: Squelch Programming

    • 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 •...

  • Page 19: Charging Batteries

    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-208 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged.

  • Page 20: Wall Transformer Operation

    The LR-500 will operate normally when connected to a wall transformer. Use Listen part number LA-208, 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.

  • Page 25: Lr-400 Table Of Contents

    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...
  • Page 26 LR-400 Package Contents LR-400 Contents • LR-400 Portable Display FM Receiver (150 MHz) Listen Part Number •LR-400-150 (150 MHz)
  • Page 27 15 kHz (±3 dB). 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. The device shall incorporate an LCD display. The receiver shall incorporate automatic battery charging circuitry. The device shall be able to use of two (2) alkaline or NiMH batteries.
  • Page 28 LR-400 Quick Reference LED: When lit, unit is on. When batteries are low or when charging the LED flashes. 3.5 mm Output Jack: Connect a Listen On/Off and Volume Control Dial earphone(s) here. Look&Listen™ Display: Shows receive level, battery status, Power/Charging Port and lock status.
  • Page 29 (ALK should be selected for all battery types other than NiMH). NOTE: Listen provides industrial strength AA alkaline batteries (part number LA-361) and high performance AA Nickel Metal Hydride batteries (part number LA-362). These may be...
  • Page 30 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.
  • Page 31 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.
  • Page 32 LR-400 Operation Instructions 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.
  • Page 33 • 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 •...
  • Page 34 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-208 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged.
  • Page 35 The LR-400 will operate normally when connected to a wall transformer. Use Listen part number LA-208, 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.

  • Page 36: Channel Selection

    Listen equipment. This process is trial Wide Band Recommendation and error. Before turning on the transmitter, listen to the wide band Listen recommends that you always channels on the receivers (channels 1-6). Listen to the audio through...

  • Page 37: Listen Sq

    Listen systems, including the system you received in this shipment. older version Listen products If you are planning to use this product with older Listen systems that • S Q is NOT compatible with do not have Listen SQ, or equipment not manufactured by Listen, you must disable Listen SQ.

  • Page 38: Rf Reception Maximization Strategies

    If you need to run cable over a length greater than 75 feet for 150 MHz applications or to maxi- mize broadcast range, Listen recommends that you use RG-8 cable rather than RG-58. RG-8 is a lower loss cable, meaning that more of your signal will reach the antenna.
  • Page 39 150 MHz Compatibility Chart Channel Frequency 150.900 152.400 151.500 152.100 151.200 151.800 150.850 150.950 151.000 151.050 151.100 151.150 151.250 151.300 151.350 151.400 151.450 151.550 151.600 151.650 151.700 151.750 151.850 151.900 151.950 152.000 152.050 152.150 152.200 152.250 152.300 152.350...

  • Page 40: Troubleshooting

    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.

  • Page 41: Troubleshooting

    Make sure the battery switch is in the NiMH setting and that you are using NiMH (Nickel Metal Hydride) batteries. Make sure you are using only a Listen supplied charging unit or transformer. Never try to charge alkaline or NICAD batteries.

  • Page 42: Warranty

    Utah. In the first ninety days after purchase, any defective product will be replaced with a new unit. After 90 days, Listen will, at its own discretion either repair or replace transmitters and receivers with a new unit or a unit of similar type and condition.

  • Page 43: Optional Accessories

    Optional Accessories Earphone Options LA-161 LA-162 LA-164 Single Ear Bud Stereo Ear Buds Ear Speaker LA-165 LA-170 Stereo Headphones LA-166 Behind-the-Head Neck Loop Stereo Headphones Connector Options LA-266 LA-265 LA-275 Professional Consumer Sacrificial Cable Camcorder Cable Camcorder Cable...
  • Page 44 Optional Accessories Accessories LA-361 High Capacity AA Alkaline Batteries (2) LA-311 16-Unit Portable Charging/Carrying Case LA-313 16-Unit Portable Carrying Case LA-317 4-Unit Portable Charging/Carrying Case LA-318 4-Unit Portable Carrying Case LA-320 Configurable Carrying Case LA-321 8-Unit Portable Charging/Carrying Case LA-322 8-Unit Portable Carrying Case LA-362 LA-323 4-Unit Portable Charging/Carrying Case w/Removable Lid Rechargeable AA NiMH...
  • Page 45 Notes...
  • Page 46 Notes...
  • Page 47 Notes...
  • Page 48 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 www.listentech.com © 2009 Listen Technologies Corporation All Rights Reserved 09162009 ®...

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Lr 400

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