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Listen LT-800 User Manual

Stationary transmitter, portable transmitter, programmable display receiver, display receiver, digital receiver, stationary receiver / power amplifier, this manual is for both 72 and 216mhz systems
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Download this manual See also: Design & Technical Manual
User's Manual
LT-800 Stationary Transmitter
LT-700 Portable Transmitter
LR-500 Programmable Display Receiver
LR-400 Display Receiver
LR-300 Digital Receiver
LR-100 Stationary Receiver / Power Amplifier
This Manual is for Both 72 and 216MHz Systems
Now with
Listen SQ!
See page 5
LISTEN
What's New -
page 2
TECHNOLOGIES
CORPORATION
©
Copyright
2003 Listen Technologies Corporation. All Rights Reserved. Document #LM-001 Version 2003.04.15.

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Summary of Contents for Listen LT-800

  • Page 1 LR-100 Stationary Receiver / Power Amplifier This Manual is for Both 72 and 216MHz Systems Now with Listen SQ! See page 5 LISTEN What’s New - page 2 TECHNOLOGIES CORPORATION © Copyright 2003 Listen Technologies Corporation. All Rights Reserved. Document #LM-001 Version 2003.04.15.

  • Page 2: What's New

    • auditory assistance and ADA Thank you... and enjoy your listening experience! compliance Built-in 44 Watt Power Amplifier Best regards, • The Listen Team LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 3: Table Of Contents

    LT-800 Stationary Transmitter Listen Portable Receiver Troubleshooting ....Quick Reference ............Listen Portable Receiver Specifications ..... Preparing the LT-800 for Use ........Operating the LT-800 ..........LR-100 Stationary Receiver / Power Amplifier Selecting a Channel For Transmitting ......Quick Reference ............

  • Page 4: Technical Service Contacts

    -700 T -700 Transmitters (216MHz only) ransmitters (216MHz only) ransmitters (216MHz only) Listen’s LT-800 and LT-700 transmitters are authorized by rule under the Low Toll Free: 1.800.330.0891 Power Radio Service (47 C.F.R. Part 95) and must not cause harmful Telephone: +1.801.233.8992 interference to TV reception or United States Navy SPASUR installations.

  • Page 5: Listen Sq Tm - Improving Your Listening Experience

    For information on enabling / disabling the SQ function for specific products, refer to the following pages: LT-800: Page 8 LT-700: Page 14 LR-300: Page 23 LR-400: Page 23 LR-500: Page 23 LR-100: Page 31 LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 6: Listen Warranty

    Listen Technologies Corporation (Listen) warrants its In the first ninety days after purchase, any defective product transmitters and receivers (LT-700, LT-800, LR-100, LR-300, will be replaced with a new unit. After ninety days, Listen LR-400, LR-500, LR-600, etc.) to be free from defects in...

  • Page 7: Lt-800 Stationary Transmitter Quick Reference

    LT-800 Stationary Transmitter Quick Reference LT-800 Front Panel: Controls & Displays Indicates audio input Indicates RF Adjust audio input levels output power (full, level of INPUT 1 and Shows which of INPUT 1 and INPUT 2 1/2 or 1/4) - select...

  • Page 8: Preparing The Lt-800 For Use

    Listen. If you are connecting the Contacts” (Page 4) if damage has occurred. antenna directly to the top of the LT-800, you will need to remove the rubber plug on top of the unit first. If you are using an optional remote antenna connected...
  • Page 9 ON, plug a headset into the jack located on the LT-800’s front panel to listen to the audio source. Adjust headset volume to a comfortable level. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com...

  • Page 10: Operating The Lt-800

    If you are using other manufacturers’ receivers with the LT-800, find out their frequency then refer to Listen’s Frequency Compatibility Tables (pages 39-42) to find the LT-800 channel number or letter that corresponds with the receiver’s frequency. As much as possible, Listen has duplicated the wide band channel letters to cover frequencies of other major brands.

  • Page 11: Lt-800 Stationary Transmitter Specifications

    Transmission Range: 72MHz: 500 - 1500 ft (152 - 457 m) 216Mhz: 1000 - 3000 ft (305 - 914 m) *Wireless Transmission System Specifications: End-to-end. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 12: Lt-800 Troubleshooting

    LT-800 is turned off. properly. Then, make sure that you have an antenna connected either to the top of the LT-800 transmitter or connected to the back of the There is hum in the audio. unit (but not both!). Place the antenna at as high a location as Make sure you have properly grounded the audio source to the LT- possible and free of obstacles.

  • Page 13: Lt-700 Portable Transmitter Quick Reference

    Fast Flashing: Mute A microphone or line level cable MUTE / TALK switch - connects here. this mutes the mic only and not the line input. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 14: Preparing The Lt-700 For Use

    Batteries. The NiMH position will attempt to charge the batteries. Charging non-Nickel Metal Hydride batteries may result in physical harm, destruction of property and/or fire. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 15 MUTE switch mutes only the microphone; your line source will continue transmitting when MUTE is pressed. MICROPHONE LINE INPUT CABLE LA-263 TV, CD PLAYER LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 16: Operating The Lt-700 Transmitter

    Refer to the Frequency Compatibility tables (pages 39-42) for specific frequencies and compatibility with other manufacturers. Also refer to Appendix A, “Which Channel(s) Should I Use?” on page 43. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 17: Lt-700 Look & Listen

    (if using NiMH batteries). Two segments showing: you have less than half of your battery life left. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 18: Lt-700 Programming

    Make sure the unit is fully seated in its slot. One of several charging cases available from Listen. Check the Listen website for more details. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 19: Operating The Lt-700 With A Wall Transformer

    20% of its charge per month. Note: NiMH batteries may be purchased from your Listen dealer (ask for part number LA-362). LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 20: Lt-700 Portable Transmitter Troubleshooting

    It is probably locked (check for the padlock icon). To on the mic sensitivity switch (located inside the battery unlock, press and hold the UP or DOWN button for 3 compartment). seconds. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 21: Lt-700 Portable Transmitter Specifications

    Transmission range: Weight: 50 - 150 ft (15.2 - 45.7 m) 16oz (0.45kg) with batteries Door: Screwdriver lockable *Wireless Transmission System Specifications: End-to-end. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 22: Listen Portable Receivers

    All LR-300 and LR-400 options plus: • Programmable to lock out channels (see page 25) • UP, DOWN and SEEK buttons protrude through access door LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 23 Nickel Metal Hydride batteries. The NiMH position will attempt to charge the batteries. Charging non-NiMH batteries can result in physical harm, destruction of property and/or fire. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 24: Operating Listen Receivers

    Simply press SEEK again until you find the Close the front access door. clearest operating channel. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 25 LED on the top of the unit will flash when you press the SEEK button. If locked, LED flashes on all Padlock appears when portable receivers when SEEK locked (LR-400 and LR-500) button is pressed. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 26: Display Receivers - Look & Listen

    LED is the only indication of low battery. When two segments are showing, you have less than half of the battery life remaining. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 27: Charging Batteries In Portable Receivers

    LED will turn off. It is not necessary to unplug the charger. Note: NiMH batteries may be purchased from your Listen dealer (ask for part number LA-362). LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 28: Lr-500 Programming

    The factory setting is four dots. Press the UP button to increment through five possible squelch settings indicated by dots. More dots means more squelch sensitivity. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 29: Listen Portable Receiver Troubleshooting

    Refer to Listen’s Frequency Compatibility Tables (pages 39-42). Either adjust the transmitter or the receiver to a common channel. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 30: Listen Portable Receiver Specifications

    * Wireless Transmission System Specifications: End-to-end. * Wireless Transmission System Specifications: End-to-end. * Wireless Transmission System Specifications: End-to-end. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 31: Quick Reference

    OFF if any of your equipment does not have SQ capability. See “What is SQ?” on Page 5 for more information. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 32 For RECEIVE audio mixed with AUXILIARY audio, select RX + AUX; For RECEIVE audio when not squelched and AUXILIARY audio when squelched, select RX or AUX LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 33: Lr-100 Stationary Receiver / Power Amplifier

    RECEIVE You should only use rechargeable type batteries. audio is muted. CAUTION: Attempting to charge non-rechargeable bat- teries may result in explosion and/or fire. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 34 OUTPUT audio only. It does not affect the OUTPUT level of the unbalanced audio. The OUTPUT audio is reduced by 40dB to microphone level when this switch is selected to MIC. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 35 This may happen if the speaker level. Connect any mono or stereo headphone LR-100 is within 40 feet of the LT-800-216 transmitter. to this 3.5mm jack. Adjust level with the SPEAKER Consider reducing the output power of the transmitter or volume knob.

  • Page 36: Lr-100 Setup And Programming

    Press and hold the button again to unlock. NOTE: It is highly recommended to lock the channel after installation to prevent accidental channel selec- tion. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 37 AND you will minimize the probability that the unit will be unsquelched by interfer- ence. However, you are also increasing LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 38: Lr-100 Troubleshooting

    The OUTPUT level is low. Make sure the MIC/LINE switch is in LINE. Adjust the RECEIVE or AUX input levels. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 39: 72Mhz Frequency Compatibility Table

    72.5250 72.5750 72.6000 72.6 72.6250 72.6750 72.7000 72.7 72.7250 72.7750 72.8000 72.8 72.8250 72.8750 72.9000 72.9 72.9250 72.9750 74.6250 74.6750 continued on next page... LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 40 75.3750 75.4000 75.4250 75.4750 75.5000 75.5 75.5250 75.5750 75.6000 75.6 75.6250 75.6750 75.7000 75.7 75.7250 75.7750 75.8000 75.8 75.8250 75.8750 75.9000 75.9 75.9250 75.9750 LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 41: 216Mhz Frequency Compatibility Table

    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 216.5250 216.5375 216.5625 216.5750 continued on next page... LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 42 216.6125 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 216.9875 LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.

  • Page 43: Appendix A - Which Channel(S) Should I Use

    To accomplish LOCK, press and hold the SEEK button for five seconds on the LR-100 and portable receivers. On the LT-700, press either the UP or DOWN button for 5 seconds, and on the LT-800, press both the UP and DOWN buttons simultaneously for 5 seconds.

  • Page 44: Appendix B - Strategies For Maximizing Rf Reception With Listen Products

    A Note on Coaxial Cable The antenna for the LT-800 or the LR-100 can be mounted directly on the unit if desired. However, you may find that the unit will provide better performance when the antenna is located elsewhere. If you plan to mount the antenna in a different location than on the top of the unit, you must use cable and connectors rated at 50 ohms.

  • Page 45: Appendix D - Resetting After An Overload Condition

    Plug the unit back in and turn the power on. The LR-100 should now function normally. If the unit is still not functioning normally, contact Listen Support. LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 46 LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 47 LISTEN TECHNOLOGIES CORPORATION +1.801.233.8992 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com All specifications subject to change without notice.
  • Page 48 8535 South 700 West, Suite A Sandy, Utah 84070 U.S.A. Telephone: +1.801.233.8992 Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 Internet: www.ListenTech.com E-Mail: info@listentech.com Printed in U.S.A. 04/2003 Copyright 8 2002 Listen Technologies Corporation. Reprint with permission only. Document number LM-001. Version 2003.04.15.

This manual is also suitable for:

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