LISTEN TECHNOLOGIES LR-4200 iDSP Receiver User Manual

The LR-4200 is a powerful Assistive Listening Receiver designed
to be compact and simple to use. The unique design of the iDSPTM
receiver family allows them to be worn as a necklace, using the
belt clip or concealed in a pocket, making this the most
inconspicuous ALS receiver on the market.

LR-4200 Quick Reference

OLED Display Area: Displays battery status,
unit ID, channel status, volume status, and charge activation.

Micro USB: Used for USB charging, programming,
firmware updates, and inventory dispensing.
Up/Down Volume Control: Press momentarily to
adjust the volume up/down or press and hold to ramp the volume.
Press and hold both up and down buttons for 5 seconds to activate
channel select; use up and down to change the channel. Momentarily
press the power button to save and exit.

3.5 mm Output Jacks: Connect Listen Ear
Phone/Neck Loop Lanyard for use with T coil hearing aids or with
Universal Ear Speaker or Headphone.
Belt Clip: To remove, remove screw and pull
belt clip from unit. To install, place belt clip in place and
insert screw.

Charging Contact: For use with Listen charging
tray options.
Power On/Off: Press and hold for 1 second to
turn on. Press and hold for 3 seconds to turn off.

LED: Indicates low battery condition and
charging status.
Battery Protective Pull Tab: Remove clear
plastic pull tab to activate internal battery connections.

Battery Door: Can be removed to access battery
and product labeling information.

Frequently Asked Questions (FAQ)

Q: How do I charge the LR-4200 receiver?

A: You can charge the LR-4200 receiver using the Micro USB port
for USB charging. Simply connect it to a power source using a
compatible USB cable.

Q: Can I wear the LR-4200 receiver as a necklace?

A: Yes, you can wear the LR-4200 receiver as a necklace using
the provided lanyard or belt clip.

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User Manual
LR-4200-072 iDSP Receiver (072 MHz) LR-4200-216 IDSP Receiver (216 MHz)
© 2017 Listen Technologies Corporation® All Rights Reserved For further details regarding use, adjustment, or programming of your Listen Technologies products visit our website at www.listentech.com/support-manuals or contact us at +1.801.233.8992 or 1.800.330.0891.

Dear Valued Customer,
Thank you for choosing Listen! We are dedicated to providing you with the highest quality products available, and take pride in delivering outstanding performance to ensure you are completely satisfied. We independently certify each of our products to the highest quality standards and back them with a limited lifetime guarantee. We are available to answer any questions you might have during installation or in the operation of our products. At Listen, it’s all about you, should you have any comments or suggestions we’re here to listen.
Here’s how to reach us: +1.801.233.8992 +1.800.330.0891 North America +1.801.233.8995 fax support@listentech.com www.listentech.com
Thank you and enjoy your listening experience!
Best regards,
Russell Gentner and the Listen Team

· In the few instances where repairs were needed, 99% of all clients indicated that they were happy with repair turn-around-times and 85% of the time, clients were without their product for less than 10 days!
· Overall client satisfaction of working with Listen was rated 4.8 out of 5.
· “Please continue with your excellent attitude toward customer satisfaction. You guys are great!”
· “I’ve never had such good service from any company. Keep up the good work!”
· “You stand behind your product wonderfully.”

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LR-4200 RECEIVER MANUAL

TABLE OF CONTENTS

iDSPTM Receivers ………………………………………………………………………………………………………………………………………………… 3 LR-4200 Quick Reference ……………………………………………………………………………………………………………………………… 4 LR-4200 Specifications …………………………………………………………………………………………………………………………………… 5 Safety Cautions! ………………………………………………………………………………………………………………………………………………… 6 Hearing Safety:…………………………………………………………………………………………………………………………………………………… 6
Medical Device Safety: …………………………………………………………………………………………………………………………… 6 Recycling : …………………………………………………………………………………………………………………………………………………………… 6
Product Recycling Instructions: …………………………………………………………………………………………………………… 6 Battery Recycling Instructions: ……………………………………………………………………………………………………………… 6 Quick Setup and Operation Instructions: ………………………………………………………………………………………………… 7 1. Unpack Unit ………………………………………………………………………………………………………………………………………… 7 2. Activate Battery ………………………………………………………………………………………………………………………………… 7 3. Charge Battery …………………………………………………………………………………………………………………………………… 7 4. Connect Ear Phone …………………………………………………………………………………………………………………………… 8
Using The Neck Loop Lanyard ……………………………………………………………………………………………………… 8 Using The 3.5mm Headset Extension Cable ……………………………………………………………………………… 8 5. Turn the Unit On………………………………………………………………………………………………………………………………… 9 6. Channel Select Mode………………………………………………………………………………………………………………………… 9 7. Adjust Volume ………………………………………………………………………………………………………………………………… 10 Battery & Belt Clip ………………………………………………………………………………………………………………………………………… 11 Low Battery Indication ………………………………………………………………………………………………………………………… 11 Belt Clip Installation/Removal …………………………………………………………………………………………………………… 11 Accessing Battery Compartment ……………………………………………………………………………………………………… 12 Reset to Factory Default Settings ……………………………………………………………………………………………………………… 12 Advanced Program Features an Listen’s UI Configuration Software …………………………………………… 13 Super Quiet Mode ………………………………………………………………………………………………………………………………… 13 Squelch ……………………………………………………………………………………………………………………………………………………… 14 Basic Channels and Expanded Channels Modes ………………………………………………………………………… 14 Channel Labels………………………………………………………………………………………………………………………………………… 14 Auto Power Mode…………………………………………………………………………………………………………………………………… 14 Unit ID………………………………………………………………………………………………………………………………………………………… 15 Brightness Control ………………………………………………………………………………………………………………………………… 15 Unit Information …………………………………………………………………………………………………………………………………… 15 Reset to Factory Defaults …………………………………………………………………………………………………………………… 15 Firmware Update …………………………………………………………………………………………………………………………………… 15 RF Reception Maximization Strategies: …………………………………………………………………………………………………… 16 72 MHz Compatibility Chart: ……………………………………………………………………………………………………………………… 17 216 MHz Compatibility Chart …………………………………………………………………………………………………………………… 18 Troubleshooting LR-4200 Receivers:………………………………………………………………………………………………………… 19 Compliance Notice and FCC Statement…………………………………………………………………………………………………… 20 Warranty …………………………………………………………………………………………………………………………………………………………… 21 Contacting Listen …………………………………………………………………………………………………………………………………………… 22

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iDSPTM Receivers
The LR-4200 is a powerful Assistive Listening Receiver designed to be compact and simple to use. The unique design of the iDSPTM receiver family allows them to be worn as a necklace, using the belt clip or concealed in a pocket, making this the most inconspicuous ALS receiver on the market.

Headset

Earbuds Ear Speaker

Ear Phone / Neck Loop
Lanyard

Hearing Aid T-Coil

Belt Clip

Extension Cable
Each receiver can be purchased with a Ear Phone/Neck Loop Lanyard that is designed to hold the receiver like a necklace similar to the Blue ToothTM transceivers used with many of the today’s hearing aids. The Ear Phone/Neck Loop Lanyard can be used as the induction loop for those users who have T-coil enabled hearing aids or cochlear implants, inducing the received audio directly into these T-coil enabled devices. The Ear Phone/Neck Loop Lanyard also provides the connection to Listen’s Universal Ear Speaker, Earphones and Headphones, incorporating a short connection cable that plugs directly into the Ear Phone/ Neck Loop Lanyards 3.5mm headset jack located 2/3 of the way up the lanyard. A second 3.5mm extension cable provided with Listen’s universal earphones provides the length of cable required to place the receiver in a pocket or using the belt clip.

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LR-4200 RECEIVER MANUAL

LR-4200 Quick Reference
1. OLED Display Area 2. Micro USB

3. Up/Down Volume Control

1. OLED Display Area: Displays battery status, unit ID, channel status, volume status and charge activation
2. Micro USB: USB charging, programming, firmware updates and inventory dispensing
3. Up/Down Volume Control: Press momentarily to adjust the volume up/down or press and hold to ramp the volume. Note: Press and hold both up and down buttons for 5 seconds to activate channel select, use up and down to change the channel. Momentarily press the power button to save and exit

4. 3.5 mm Output Jacks 5. Belt Clip

7. Power On/Off 8. LED

6. Charging Contact

9. Battery Protective Pull Tab
10. Battery Door

4. 3.5 mm Output Jacks: Connect Listen Ear Phone/Neck Loop Lanyard for use with T coil hearing aids or with Universal Ear Speaker or Headphone.
5. Belt Clip: To remove, remove screw and pull belt clip from unit. To install place belt clip in place and insert screw.
6. Charging Contact: For use with Listen charging tray options. 7. Power On/Off: Press and hold for 1 second to turn on. Press and hold for 3 seconds to turn off. 8. LED: Indicates low battery condition and charging status 9. Battery Protective Pull Tab: Remove clear plastic pull tab to activate internal battery connections. 10. Battery Door: Can be removed to access battery and product labeling information.

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LR-4200 Specifications

Product Specification: LR-4200-072 / LR-4200-216

Audio

System Frequency Response System Signal to Noise Ratio
System Distortion Output/s

Controls

User Controls Set-up Controls

Indicators

Programming LED

Display

Frequency Range

Number of Channels

Sensitivity

Frequency Accuracy

Antenna Type

Power Physical
Environmenta Compliance

Squelch
Battery Type Battery Life Battery Charging Time Power Supply
Dimensions (H x W x D) Dimensions with Belt Clip Unit Weight Unit Weight with Batteries Shipping Weight Color
Temperature – Operation Temperature – Storage Relative Humidity
Standards

50 Hz – 15 kHz (±3 dB) / 50 Hz – 10 kHz (±3 dB) SQ enabled 80 dB, SQ disabled 60 dB / SQ enabled 80 dB, SQ disabled 50 dB <2% total harmonic distortion (THD) at 80% deviation Two (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm
Power, up/down volume Press and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel Via software and USB port
Flashes when batteries are low or to indicate charging, solid when fully charged Channel designation,battery level, unit number, charging status
72.025 – 75.975 MHz / 216.0125 – 216.9875 MHz (57)17 wide band, 40 narrow band / (57)19 wide band, 38 narrow band .6uV typical, 1 uV maximum for 12 dB sinad ± .005% stability 32 to 122 ºF (0 to 50 ºC) Uses ear phone/neck loop lanyard and short ear phone cable or standard earphone cable Programmable in 20 steps, automatic on loss of RF signal
Lithium Ion 8 Hours of typical use Fully charged in 2.5 Hours Micro USB connector, 5 V, 500 mA
3.75 x 2.0 x 0.64 in. (9.6 x 5.0 x 1.7 cm) 3.75 x 2.0 x 0.80 in. (9.6 x 5.0 x 2.1 cm) 1.6 oz (45.4 g) 2.4 oz (68.1 g) 3.2 oz (90.8 g) with 16 oz (454 g) minimum Flat Black
14 to 104 ºF (-10 to 40 ºC) (-)4 to 122 °F (-20 to 50 °C) 0 to 95% relative humidity, non-condensing
FCC Part 15, Industry Canada, RoHS

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LR-4200 RECEIVER MANUAL

Safety Cautions!

Hearing Safety:
This product is designed to amplify audio to a high volume level which could potentially cause hearing damage if used improperly. To protect your hearing make sure the volume is turned down before putting on the ear speaker or headphones. Then adjust the volume up to the minimum setting require to hear clearly. Do not allow children or other unauthorized individuals to have access to this product without supervision.

Medical Device Safety:
Before using this Listen product with an implantable or other medical device, consult your physician or manufacturer of your implantable or other medical device. Always make sure you are using this product in accordance with the safety guidelines established by your physician or the implantable device manufacturer.

Recycling :
Help Listen Technologies protect the environment! Please take the time to dispose of your equipment properly.

Product Recycling Instructions:

Please do NOT dispose of your Listen Technologies equipment in the household trash.

Please take the equipment to an electronics recycling center; OR, return the product to the

factory for proper disposal.

Battery Recycling Instructions:

Please do NOT dispose of batteries in the household trash. Please take the batteries to a retail or community collection point for recycling.

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Quick Setup and Operation Instructions:
1. Unpack Unit
Inspect the unit for physical damage. If damage is apparent, please contact Listen Technologies technical support for assistance.

2. Activate Battery
Remove the clear plastic pull tab located at the bottom of the battery door, this will activate the internal battery connections. Note: upon first activation the battery will have a limited charge, we recommend the unit be charged immediately.

Pull the tab to activate the internal battery

3. Charge Battery
Fully charge the rechargeable Lithium Ion battery by connecting the unit to one of Listen Technologies charging options.
a. LA-380 Intelligent 12-Unit Charging/Carrying Case b. LA-381 Intelligent 12-Unit Charging Tray c. LA-421 1-Port USB Charger (comes with cable) d. LA-423 4-Port USB Charger (comes with 4 cables) e. LA-422 USB to Micro USB cable (Connects iDSPTM receiver to any standard USB port)
When connected to a charging option the OLED status display will show the battery charge Icon momentarily and the status LED next to the power button will begin to flash indicating that the unit is charging.

OLED Display:
Charging Icon when first connected to a charging source
Indicated Unit #, Charge % and Channel Assignment when removed for charging

Status LED:
Flashes during charging
Solid when charge is complete

When the unit reaches 100% charged the status LED next to the power button will stop flashing and will be solid.

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LR-4200 RECEIVER MANUAL

4. Connect Earphone

Ear Speaker

Using The Earphone/Neck Loop Lanyard

Connect the Listen Intelligent ear phone/ neck loop lanyard to the two 3.5 mm output jacks on the unit. Then connect the short cable ear speaker or headphones to the 3.5mm output jack on the lanyard. The lanyard neck loop is placed over the head and worn as a necklace.

Headset

This is the preferred method of wearing the receiver for best performance!

For T-coil compatible hearing aid use simply disconnect the ear speaker or headset from the ear phone/neck loop lanyard.

Earbuds

Ear Phone/ Neck Loop
Lanyard

Using The 3.5mm Earphone Extension Cable
If the receiver is to be clipped to a belt, waistband or inside a pocket a long extension cable is used. Connect the extension cable to the ear speaker, headset or earphones, then connect the extension cable into one of the 3.5 mm output jacks on top of the receiver.

Ear Speaker

Extension Cable

Headset

Earbuds

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5. Turn the Unit On
Press and hold the Power Button for 1 second to turn the receiver on, the unit display will show the unit ID, battery status and the current channel. Each item will be displayed and then the display will turn off.

OLED Display:
Indicates Unit #, Charge % and Channel Assignment when power button is pressed

#777

Power Button:
Press and hold for 1 second to turn on, press and hold for 3 seconds to turn off

To view the unit ID, battery status or channel while the unit is powered, momentarily press the power button. To turn the receiver off, press and hold the power button for 3 seconds.

6. Channel Select Mode

72 MHz receivers operate on 17 wide band channels and 40 narrow band channels. Channels represented by letters on the display (i.e. A) are wideband channels; channels represented by numbers are narrowband channels. Listen recommends the use of wide band channels for a much higher quality listening experience.

216 MHz receivers operate on 19 wide band channels and 38 narrow band channels. Channel numbers starting with a “2” are wide band; channels beginning with a “1” or “3” are narrow band channels.

The Listen receiver is pre-programmed to operate on channel E (72 MHz) or channel 2C (216 MHz) from the factory. To receive audio, both the transmitter and receiver(s) need to be set to the same channel. If not, the receiver channel needs to reprogrammed to the channel being broadcast. To adjust the receiver to a different listening channel, press and hold the volume up and down buttons simultaneously for 5 seconds. The current channel will begin to flash on the display.

Use the volume up or down button to scroll through the available channels. Once the desired channel is located mometarily press the power button to save and exit the channel select mode or if no button is pressed for 5 seconds then the selected channel will be saved and the unit will exit the channel select mode. See page 17-18 for complete channel selection information.

1. Channel Select Mode:
Press and hold the up and down button simultaneously for 5 seconds

CH 4

3. Save/Exit: Press power button to save and exit.
2. Scroll Up/Down: Use the up or down button to scroll through available channels

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LR-4200 RECEIVER MANUAL

7. Adjust Volume
Adjust the listening volume to a comfortable listening level via the volume up/down buttons.

OLED:
Indicates the level in a % of maximum level

Volume Up/Down

Use the volume up

50%

or down to raise/

lower volume

If the volume is adjusted while there is no audio present the unit will output a momentary tone each time the button is pressed allowing the user to gauge and adjust the audio level to a comfortable listening level. The volume level will be displayed for 3 seconds and then the display will turn off.
Note: To protect the users hearing, at power up the receiver will automatically reset to a 25% volume level. Put on a headset and then adjust the volume to a comfortable listening level.

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Battery & Belt Clip
Low Battery Indication
When the unit detects a low battery condition it will cause the status LED to flash slowly indicating that the unit needs to be charged. When the light begins to flash the unit has approximately 30 minutes of receiver use before the unit will turn off. Press and release the power button and the battery charge % will be displayed on the OLED screen temporarily.

Status LED:
Begins to flash when receiver has less than an estimated 30 minute use left on the charge

OLED Display:
Press the Power button to get the status of the battery charge life
100%
OLED Indicates a % of charge

Belt Clip Installation/Removal
To remove belt clip, remove screw and pull belt clip from unit. To install place belt clip in place and insert screw.
Belt Clip Screw:

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LR-4200 RECEIVER MANUAL

Accessing Battery Compartment
To access the battery compartment simply remove the belt clip and battery door by pulling down and out on the battery door locking tab. Note: The product labeling information can be found behind the battery and includes the product model number, description, serial number, contact information and compliance statement.

Battery door

Door locking
tab

Reset to Factory Default Settings
The unit can be returned to its factory default settings at any time by following steps:
1. Turn the unit off
2. Press and hold down the volume down button while pressing and holding the power button for 1 second to turn the unit on
3. Continue to hold down the volume down button while the unit powers on. The OLED display will show the Unit #, Charge Level %, Channel Selection and end with “Reset?”
4. Release the volume down button when Reset is displayed on the OLED display.
5. Press the power button to confirm default is desired. Once pressed the unit will display “Defaulted” on the OLED display. The unit has now returned to the factory default state
6. If 5 seconds lapses before the power button is the pressed, the unit will time out and the unit will not reset to the factory default settings

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Advanced Program Features and Listen’s iDSP Software Suite
To manage the advanced program features on any of the iDSPTM receivers a windows based User Interface (UI) software is required.
This software is available free of charge from Listen Technologies. To download the software log onto http://www.listentech. com/support/software/idsp-software-suite/ and follow the instructions.
With the UI software, direct communication is provided via the Micro USB connection on the receiver. Once connected the UI software provides setup and adjustment of the following functions of the LR-4200 receiver.
Note: A help file for the UI software is included with the download and will provide detailed instructions for set up and management of all the advanced program features of the LR-4200 receiver.
Super Quiet Mode
To reduce background noise and increase the audio quality, Listen offers a noise reduction technology called Listen SQTM. Only Listen *transmitters and receivers have SQTM available, both the transmitter and receiver must have SQTM activated to achieve the improved sound quality performance. This LR-4200 receiver has been shipped to you with the SQTM feature enabled.
SQTM Summary: Improves noise performance by at least 20 dB SQ must be enabled for both the transmitter and receivers SQTM is NOT Squelch SQTM is NOT compatible with other manufactures’ products SQTM can be disabled to permit operation with early Listen products or other manufactures, products
Note: SQTM is not available on some of the early Listen transmitters. Please contact Listen’s Technical Support team to find out if your existing transmitter has this feature available.
Note: If you are planning to use this product with older Listen systems that do not employ SQTM or another manufactures transmitter The SQTM mode should disabled on this receiver. Refer to the manual supplied with the downloaded Listen UI software for details on how to manage the SQTM Mode on this receiver.

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LR-4200 RECEIVER MANUAL

Squelch
The purpose of squelch is to mute the audio output of the receiver when the signal from the transmitter is turned off or the level is too weak to be received. Without squelch radio noise will be heard in the earphone. The squelch on the receiver can be adjusted to mute the audio at different RF signal strengths. There are 20 squelch settings. The lowest squelch setting (no squelch) is “0” and the tightest squelch setting is “20”. Your Listen receiver has been shipped to you with the squelch setting of 3.
Useful as follows:
· To ensure that users don’t hear transmissions from other transmitters, set the squelch setting to the highest level that doesn’t squelch the receiver in the defined listening area
· If the receiver is to close to the transmitter (i.e. in a classroom), set the squelch high enough so that when the transmitter is turned off it immediately squelches the audio on the receiver and transmitters in other rooms will not be heard
· In an area that has a lot of broadcast inference, adjust the squelch setting to a higher setting to ensure the interference is not picked by the receiver
· For the maximum amount of range, consider setting the squelch setting to a low level (0, 1 or 2). This expands the range but could allow interference from other transmitters when operating far distances from the primary transmitter
Basic Channels and Expanded Channels Modes
Your Listen receiver has been shipped with the Basic Channel Mode enabled.
In the default Basic Channel Mode, only the wide band channels are available for selection. If the channel desired is not available in Basic Channel Mode, the receiver will need to be set to the Expanded Channel Mode. In Expanded Channel Mode all wide band and narrow band are available for selection.
Channel Labels
The channel labels are displayed on the OLED status screen. The default is the channel number the receiver has been programmed to receive, i.e. “CH-E”. Customization of this display can be created to better identify the type of audio, for example CH-E could be changed to display “Spanish” if the receiver is used for language translation.
Auto Power Mode
The auto power mode will automatically power the receiver on when the unit is removed from the charging device, displaying the unit ID, battery status and the active channel. When the unit is returned to the charging device the unit will automatically turn off and resume charging operation. Your Listen receiver has been shipped to you with the Auto Power Mode enabled.

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Unit ID
The unit ID number provides a unique identification for each receiver that is displayed on the OLED status screen. This can be any 3 digit number between 000 and 999. The unit ID allows venues to track individual units and for easy dispensing and inventory control. Your Listen receiver has been shipped to you with a Unit ID of 000.
Brightness Control
The Brightness Control adjusts the level of brightness of the OLED display. There are four settings Auto, Bright, Dim and Disabled. In the Auto mode the unit uses an internal light sensor and automatically dims the display when the light level is below approximately 10 Lux. In the Bright, Dim or Disabled mode the unit disables the light sensor and leaves the OLED in the selected Bright or Dim state. In the disabled mode the unit disables the display from lighting during normal operation except for the power on sequence or when the power button is momentarily pressed to check status. The receiver is shipped with the Auto Brightness Control Mode enabled.
Jack Sense
The jack sense mode when enabled will automatically turn the receiver on when a headset is inserted into the 3.5 mm output jack on the receiver. The receiver will automatically turn off after 60 seconds when the headset is removed from the 3.5 mm output jack. Your listen receiver has been shipped to you with the Jack Sense Mode disabled. Note: If Jack Sense is on and Auto Power is on, the receiver will ignore jack sense while on the charger.
Unit Information
When a unit is connected to the configuration software the software extracts specific information from the unit and displays it for the user. This information includes the model number, frequency, Serial Number and Firmware Version.
Reset to Factory Defaults
The unit can be returned to the factory default settings.
Firmware Update
The firmware update function will check via the internet to see if a firmware update is available for the receiver.

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LR-4200 RECEIVER MANUAL

RF Reception Maximization Strategies:
For proper and reliable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. Follow these strategies should be used to maximize this signal:
a. When designing and installing a 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. Minimize the distance between the transmitter and receivers d. Move transmitter and receivers away from metal objects e. Place the transmitting antenna as high as possible (on stationary transmitters) f. Orient both transmitting and receiving antennas vertically g. On portable transmitters and receivers, the cable from the microphone or
headset is the antenna; ensure that the cable is not coiled or laying horizontal
h. For 216 MHz stationary LT-800 transmitter only, consider using a gain antenna such as a Yagi type antenna or the LA-107 ground plane antenna.”
NOTE: If the RF signal to the 216 MHz models is too high, the audio will be distorted. This may happen if you are within 40 feet (12m) of the LT-800-216 transmitter or within 5 feet (1.5 m) of the LT-700-216 transmitter.
CAUTION: When installing remote antennas, ensure the antenna is clear of power lines. Coaxial cable, connectors, and optional antenna mounting kits are available from Listen. Visit www.listentech.com or ask your dealer for details.

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72 MHz Compatibility Chart:

Frequency

Phonic

MHz Listen Ear Comtek Phonak Williams* Gentner Telex Drake

72.0250 1

A1 (11, 1)

72.0500

(2)

72.0750 2

A2 (12, 3)

72.1000 A

A A, (13, 4) 2

A 72.1

72.1250 3

A3 (14, 5)

72.1500

(6)

72.1750 4

A4 (15, 7)

72.2000 K

K, (8)

B 72.2

72.2250 5

K5 (16, 9)

72.2500

(10)

72.2750 6

K6 (17, 11)

72.3000 B B

B B,(18, 12) 6

C 72.3

72.3250 7

B7 (19, 13)

72.3500

(14)

72.3750 8

B8 (20, 15)

72.4000 N N

N N, (16)

D 72.4

72.4250 9

N9 (21, 17)

72.4500

(18)

72.4750 10 10 10

N0 (22, 19)

72.5000 C

C C, (23, 20) 10 E 72.5

72.5250 11 11 11

C1 (24, 21)

72.5500

(22)

72.5750 12 12 12

C2 (25, 33)

72.6000 O O

O O, (24) 12 F 72.6

72.6250 13 13 13

O2 (26, 25)

72.6500

(26)

72.6750 14 14 14

(27)

72.7000 D D

D D, (28) 14 G 72.7

72.7250 15 15 15

(29)

72.7500

(30)

72.7750 16 16 16

D6 (30, 31)

72.8000

P P

P, (32)

16 H 72.8

72.8250 17 17 17

P7 (31, 33)

72.8500

(34)

72.8750 18 18 18

P8 (32, 35)

72.9000 E

E E, (33, 36) 18

I 72.9

72.9250 19 19 19

E9 (34, 37)

72.9500

(38)

72.9750 20 20 20

E0 (35, 39)

Frequency

Phonic

MHz Listen Ear Comtek Phonak Williams* Gentner Telex Drake

74.6250 33 33

E3 (36, 40)

74.6500

(41)

74.6750 34 34 34

E4 (37, 42)

74.7000 I

I I, (38, 43) 21 O

74.7250 35 35 35

I5 (39, 44)

74.7500

(45)

74.7750 36 36 36

I6 (40, 46)

75.2250 37 37 37

I7 (41, 47)

75.2500

(48)

75.2750 38 38 38

I8 (42, 49)

75.3000 J

J J, (43, 50) 24 P

75.3250 39 39 39

J9 (55, 51)

75.3500

(52)

75.3750 40 40 40

J0 (45, 53)

75.4000 R

R, (54)

26 Q

75.4250 21 21 21

R1 (46, 55)

75.4500

(56)

75.4750 22 22 22

R2 (47, 57)

75.5000 F

F F, (48, 58) 28

J 75.5

75.5250 23 23 23

F3 (49, 59)

75.5500

(60) 29

75.5750 24 24 24

F4 (50, 61)

75.6000 S

S, (62)

K 75.6

75.6250 25 25 25

S5 (51, 63)

75.6500

(64)

75.6750 26 26 26

S6 (52, 65)

75.7000 G G

G G, (53, 66) 32 L 75.7

75.7250 27 27 27

G7 (54, 67)

75.7500

(68)

75.7750 28 28 28

G8 (55, 69)

75.8000 T

T, (70)

34 M 75.8

75.8250 29 29 29

T9 (56, 71)

75.8500

(72)

75.8750 30 30 30

T0 (57, 73)

75.9000 H H

H H, (58, 74) 36 N 75.9

75.9250 31 31 31

H1 (59, 75)

75.9500

(76)

75.9750 32 32 32

H2 (60, 77)

*Parenthesis indicate T35 and T20 narrowband.

Wideband frequencies are indicated in highlighted rows. The highlighted channels also indicated those channels available in the “basic” mode (default). All channels can be accessed when in the “expanded” channel mode (see page 14 for more information).

l PAGE 17

LR-4200 RECEIVER MANUAL

216 MHz Compatibility Chart:

Frequency

Phonic

MHz

Listen Ear Phonak Comtek Williams Gentner CSI

216.0125 1A

216.0250 2A

216.0375 3A

216.0625 1B

216.0750 2B

216.0875 3B

216.1125 1C

216.1250 2C

216.1375 3C

216.1625 1D

216.1750 2D

216.1875 3D

216.2125 1E

216.2250 2E

216.2375 3E

216.2625 1F

216.2750 2F

216.2875 3F

216.3125 1G

216.3250 2G

216.3375 3G

216.3625 1H

216.3750 2H

216.3875 3H

216.4125 1J

216.4250 2J

216.4375 3J

216.5125 1K

216.5250 2K

216.5375 3K

216.5625 1L

216.5750 2L

216.5875 3L

216.6125 1M

216.6250 2M

216.6375 3M

216.6625 1N

216.6750 2N

216.6875 3N

216.7125 1P

216.7250 2P

216.7375 3P

216.7625 1R

216.7750 2R

216.7875 3R

216.8125 1S

216.8250 2S

216.8375 3S

216.8625 1T

216.8750 2T

216.8875 3T

216.9125 1U

216.9250 2U

216.9375 3U

216.9625 1V

216.9750 2V

216.9875 3V

Light AVR Speed C01 N01
C05
C09 N09
C12 N12
C18 N18 C21
C24 N64 C25
C29
C32 N72 C33
C37 N77 C39 C40 N80

Wideband frequencies are indicated in highlighted rows.

l L R – 4 2 0 0 R E C E I V E R M A N U A L

PAGE 18

Troubleshooting LR-4200 Receivers:

The receiver has no power Make sure the unit has either a fully charged battery or a Listen approved wall charging transformer is connected. Make sure the Power button on the top of the unit has been pressed to turn the unit ON. If this does not work, make sure the battery is installed properly and / or install a replacement battery.
There is no audio Make sure the volume control is turned up to at least 25%. Check the Intelligent Earphone/Neck Loop Lanyard to insure it’s plugged all of the way. Make sure the Ear Phone is plugged into the Earphone/Neck Loop Lanyard. Check to insure the transmitter is broadcasting an audio source. Verify the receiver is tuned to the same channel as the transmitter. If the RF signal is too weak, the receiver will squelch and mute the audio source; move closer to the antenna or make sure the transmitter’s output RF power switch is set on “FULL” (LT-800).
The audio is distorted Check the receiver is on the correct channel and make sure your using the clearest channel possible. Verify the audio on the transmitter is not turned up too loud; this will cause distortion. Insure the Intelligent Ear Phone/Neck Loop Lanyard connectors are pushed all the way into the jacks on top of the unit. Check the Ear Phone to verify it is plugged all the way into the Ear Phone/Neck Loop Lanyard. Review the SQTM settings on your transmitter and receivers to verify both are turned ON (or OFF, if some of your equipment is not SQTM capable). Make sure the receiver is not too close to the transmitting antenna. If the receiver can’t get farther away from the antenna, turn down the RF output power on the stationary (LT-800) transmitter.
I cannot pick up the signal on the receiver Check to make sure the receiver and the transmitter are on the same exact channel frequency. Verify the receiver is in broadcast range of the transmitter. Move the receiver closer to the transmitter.
I can pick up the signal on the receiver, but it sounds like it’s not tuned in Check the transmitter and receiver and verify they are both on exactly the same channel number/letter. Make sure you are using a clear channel that is free from noise and interference.
I’m using another brand of transmitter – how do I tell which channel to use? Refer to Listen’s Frequency Compatibility Table (page 16). Adjust either the transmitter or the receiver to a common channel.
There is not sufficient range Inspect the transmitting antenna verify it is located as close as possible to the receiving area. Place the antenna as high as possible and check to see it is free from obstacles. Check the squelch setting on the unit; perhaps it is too sensitive.
When I change channels, only certain channels are accessible The unit has been programmed to basic mode which only shows the wide band channels. The unit can be programmed for expanded mode which will show all 57 channels. This is programmed via the configuration software.
My battery is not charging Verify the clear plastic pull tab has been removed from the receiver battery door engaging the battery connections. Make sure the battery is installed properly and that the unit is plugged into the charging device correctly. Check the charging device to verify it is plugged in the proper power outlet and power is available at the outlet. If this does not work, install a replacement battery.
I want to run the unit from a wall transformer Simply plug a Listen approved charging transformer (LA-421) into the Micro USB connector on the side of the unit. A battery must be installed at all times even when operating the unit with a wall charging transformer.

l PAGE 19

LR-4200 RECEIVER MANUAL

Compliance Notice and FCC Statement and Industry Canada Statements
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. 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. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected. · Consult the dealer or an experienced radio/TV technician for help.
This equipment has been certified to comply with the limits for a class B computing device, pursuant to FCC and IC Rules. In order to maintain compliance with FCC and IC regulations, shielded cables must be used with this equipment. Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the equipment without the approval of manufacturer could void the user’s authority to operate this equipment.
Industry Canada Statement
This equipment complies with ICES-003 class B.
CAN ICES-3 (B)/NMB-3(B)

l L R – 4 2 0 0 R E C E I V E R M A N U A L

PAGE 20

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, LR-4200, LR-5200) 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.
Listen warrants its Stationary IR Radiators (LA-140) to be free from defects in workmanship and material under normal use and conditions for three years from the date of purchase.
Listen warrants its Noise Canceling Microphone (LA-270) to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase.
Listen warrants its Charging/Carrying Cases (LA-306, LA-311, LA-313, LA-317, LA-318, LA-319, LA-320, LA-321, LA-322, LA-323, LA-324, LA-325, LA-380, LA-381) to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase.
All other products and accessories are warranted for 90 days from date of purchase.
This warranty is only available to the original end purchaser of the product and cannot be transferred. Warranty is only valid if warranty card has been returned within 90 days of purchase. This warranty is void if damage occurred because of misuse or if the product has been repaired or modified by anyone other than a factory authorized service technician. Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the result of a manufacturing defect. Listen is not liable for consequential damages due to any failure of equipment to perform as intended. Listen shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it. Listen specifically disclaims and negates any warranty of merchantability or fitness of use of such equipment including, without limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws and regulations. The terms of the warranty are governed by the laws of the state of 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. Product that is not covered under warranty shall be repaired or replaced with a unit of similar type and condition based on a flat fee. Contact Listen for details.
This limited warranty, prices and the specifications of products are subject to change without notice.
http://www.listentech.com/support-warranty-registration

l PAGE 21

LR-4200 RECEIVER MANUAL

Contacting Listen
If technical service is needed, please contact Listen. Pre-authorization is required before returning Listen products. If products were damaged in shipment, please contact the carrier, then contact Listen for replacement or repair requirements payable by the carrier. Listen’s corporate headquarters are located in Bluffdale, Utah U.S.A. and are open Monday through Friday, 8am to 5pm Mountain Time.
14912 Heritagecrest Way Bluffdale, Utah 84065-4818
+1.801.233.8992 +1.800.330.0891 North America
+1.801.233.8995 fax
support@listentech.com www.listentech.com
20170209

l L R – 4 2 0 0 R E C E I V E R M A N U A L

PAGE 22

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. 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. Here’s how to reach us: +1.801.233.8992 +1.800.330.0891 North America +1.801.233.8995 fax support@listentech.com www.listentech.com Thank you and enjoy your listening experience! Best regards, Russell Gentner and the Listen Team
· In the few instances where repairs were needed, 99% of all clients indicated that they were happy with repair turn-around-times and 85% of the time, clients were without their product for less than 10 days!
· Overall client satisfaction of working with Listen was rated 4.8 out of 5. · “Please continue with your excellent attitude toward customer satisfaction. You guys are great!” · “I’ve never had such good service from any company. Keep up the good work!” · “You stand behind your product wonderfully.”
Assistive Listening · Language Interpretation · Soundfield · Tour Group · Conferencing

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Quick Reference

LT-800 Table of Contents

Package Contents

Specifications

Architectural Specifications

Specifications

Block Diagram

Quick Reference

Setup Instructions

Operating Instructions

Audio Control

Listen SQTM (Super Quiet)

RF Reception Maximization Strategies

Coaxial Cable

Channel Selection

Compatibility Charts

72 MHz Frequency Compatibility Chart

216 MHz Frequency Compatibility Chart

Phonak Frequency Compatibility Chart

Supplementary Information

Troubleshooting

Compliance Notice

FCC Statement

Warranty

Contacting Listen

Optional Accessories

Setup Instructions Operating Instructions

Listen SQTM

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Channel Selection Compatibility Charts

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LT-800 Package Contents
LT-800 Contents
· LT-800-072 (72 MHz) or · LT-800-216 (216 MHz) or · 12 VDC Power Supply · User Manual

Listen Part Number
LT-800-072 (72 MHz) LT-800-216 (216 MHz)

Optional Accessories
See page 22

LT-800 Specifications

Specifications

Architectural Specifications
The stationary FM transmitter shall be capable of broadcasting on 57 channels. The transmitter shall have a SNR of 80dB or greater. The output power shall be adjustable to quarter, half or full. Channel tuning shall be capable of being locked. The device shall broadcast on both wide and narrow band channels. The device shall have an audio frequency response of 63 Hz to 15k Hz, ± 3dB at 72 MHz, or of 63 Hz to 10k Hz, ± 3dB at 216 MHz. It shall have two mixing audio inputs. The device shall have the following audio controls: input level, mix level and an adjustable low pass filter. The device shall have an audio processor that is capable of automatic gain control and limiting. The Listen LT-800 is specified.

Specification

RF Audio Controls

Specifications

LT-800-072

LT-800-216

RF Frequency Range

72.025 – 75.950 MHz

216.025 – 216.9875 MHz

Number of Channels

17 wide band, 40 narrow band

19 wide band, 38 narrow band

Frequency Accuracy

+/-.005% stability 32° to 122°F (0°- 50°C)

Transmitter Stability

50 PPM

Output Power

80,000uV at 3 m

100mW (max allowed by FCC)

Antenna

Various Antennas available

Antenna Connector

BNC

Compliance

FCC Part 15, Industry Canada

FCC Part 90, Industry Canada

** All system specifications are wireless end-to-end

System Frequency Response

50 Hz – 15 kHz (±3 dB)

50 Hz – 10 kHz (±3 dB)

System Signal to Noise Ratio (A-Weighted)

80 dB SQ enabled; 60 dB SQ disabled

80 dB SQ enabled; 50 dB SQ disabled

System Distortion

<2% total harmonic distortion (THD) at 80% deviation

Audio Input 1

Rear panel. (1) Female-XLR and ¼ in. combo connector, balanced, 0/-55 dBu (line/mic) nominal input level adjustable, -30/+21 dBu (line/mic) maximum input level, impedance 20k/1k Ohms (line/mic), phantom power +12 VDC.

Audio Input 2

Rear panel. Two (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k Ohms.

Audio Processing (Process)

Compression can be turned on/off. Slope internally adjustable from 1:1 to 4:1. Default 2:1

Contour

Cuts and boosts frequencies above 5 kHz

Combined Audio Output (Mix)

Input 1 and Input 2 Mixed Output (Rear Panel). Two (2) phono connectors, unbalanced, -10 dBu nominal output level, +19 dBu maximum, impedance 10 ohm.

Headphone Output (Monitor) Front panel. One (1) 3.5 mm stereo connector, unbalanced, adjustable output level, +7 maximum, impedance 10 Ohm.

Front Panel Rear Panel Internal Adjustments Programming

Power, Test Tone on/off, Channel UP/DOWN, Input levels, Mix level, Contour, Monitor volume control. Input 1 Level (line, mic, mic-phantom power), Input 2 Level (-10/+10 dBu), RF Power (low, mid, high)
Compression ratio for audio processor SQ on/off, Processing on/off. Channel lock

Indicators

Input 1 and Input 2, Mix VU SQ and Processing RF Power LCD Display Test Tone

Indicates Input 1, Input 2 and Mix audio levels. 10 segment LED’s (8 green, 2 red) Indicated by a green LED when on (front panel) Indicated on the LCD (low, mid, high)
Channel designation, lock status, RF Power Level, programming (front panel) Red LED illuminates when test tone enabled

Power

Power Supply Type Power Supply Input Power Supply Output Power Supply Connector Power Supply Compliance

In-line power supply. Listen part number LA-207 (Line cord is determined by each country’s AC power standards). Input: 100-240 VAC, 50-60 Hz, 0.4 A Output: 12 VDC, 1.3 A, 15.6 W
Output Connector: .02 in. (5.0 mm) OD, .01 in. (2.5 mm) ID, barrel type UL, CE, GS, TUV

Physical

Dimensions (H x W x D) Color Unit Weight Unit Weight with LA-201 Power Supply Shipping Weight
Rack Mounting

1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm) Dark Grey with white silk screening 2.6 lbs. (5.7 kg) 4.4 lbs. (2.0 kg)
5.0 lbs. (2.26 kg) One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space.
Optional rack mount (LA-326)

Environmental

Temperature – Operation Temperature – Storage Humidity

-10°C (14°F) to +40°C (104°F) -20°C (-4°F) to +50°C (122°F) 0 to 95% Relative Humidity, non condensing
Specifications are subject to change without notification

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LT-800 Block Diagram

100-240 VAC 50-60 Hz 0.4 A

In-Line Power Supply
LA-207 (provided)

POWER

Off

Red LED

12 VDC 1.3A

Power Supply CPU Module

CHANNEL SELECT
Up Down
Listen LCD Display Backlighted

3.5MM Stereo
HEADPHONE
Volume

Remote Antenna Connection

Top Mounted Antenna Stud

BNC
ANTENNA

Transmitter RF Board

Functions controlled by the CPU Module

Low Mid

High

RF POWER

MIX Level VU Meter

Compression Ratio (internal adjustment)

Pre-emphasis

SQ Companding

Green

LED

MIX LEVEL

Off

Processing

Green LED

Off

CONTOUR

PROCESS

Input 1 VU Meter

Input 2 VU Meter

12VDC

Mic

Line

Mic Phantom Pwr

Input Level Front Panel

Input 1 Level Select Mic-Phantom Pwr, Mic, Line
Input 2 Level Select +10dBu/-10dBu

+10dBu

-10dBu

Female XLR-1/4″ Combo Connector 2/Tip 3/Ring 1/Sleeve
INPUT 1

Phono
INPUT 2

Test Tone Button Front Panel

OFF

Red LED

Phono
MIX OUTPUT

400Hz
TEST TONE

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LT-800 Quick Reference

LT-800 Front Panel: Controls & Displays

Adjust audio input levels of Input 1 and Input 2 here. See page 11 for more information.

Indicates

Process Mode

is active.

Indicates audio input

Indicates

level of Input 1 and

Super Quiet

Input 2.

Shows mixed mode is active.

audio level.

Top mount antenna connection: Remove rubber plug and screw antenna in place.

LCD: Shows which channel is selected.

Monitor Port: Plug in a headset and adjust volume.

Power ON / OFF

Test Tone: Activates a tone to aid system setup.

Mix Level: Adjust so the Mix Level meter occasionally lights the red LED.

Contour: Equalization adjustment. Turn counter-clockwise for voice and clockwise for music.

LT-800 Back Panel: Connections & Settings

Channel Select Up: Press for 3 seconds to lock on current channel.

Channel Select Down: Press for 8 seconds to enter program mode. See page 8 for more information.

Remote Antenna Connection: See page 22 or the Listen website for details on antennas that can be attached here.

Mix Output: These connectors contain a mix of Input 1 and Input 2. They are unbalanced phono connectors; and the output level is -10dBu.

Input 2: Set switch to match the level of your Input 2 audio source, not used to increase or decrease level by +10dBu.

Input 1: Used for balanced connection of a microphone or line level input. This combination connector accepts either XLR or ¼” phono plugs.

Set RF Power level here (¼, ½, and Full). See page 9 for guidelines on setting power levels.

The Listen LA-201 power supply connects here.

Input 2: Connect unbalanced audio to these phono connectors, input level -10dBu or +10dBu.

Select Line, Mic or Mic+Phantom Power. Line is balanced 0 dBu input level, Mic is -55dBu, +12VDC supplied in PH Power position. If not using input 1, leave in line position.

LT-800 Setup Instructions
1 Unpack the Product Remove outer packaging and plastic cover. Inspect for physical damage.
2 Mount in Rack (if necessary) If rack mounting the unit, install the optional rack mount kit (part LA-326) according to the instructions included with the kit, then install the LT-800 in the rack.
NOTE: If rack mounting, you will need to use a rear connection antenna.

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Rack Mount with dual unit installed

Rack Mount with single unit installed Shown with LT-800

3 Connect Antenna Connect the antenna (not included) according to the installation instructions. Only use an antenna supplied by Listen. If you are connecting the antenna directly to the top of the LT-800, you will need to remove the rubber plug on top of the unit. If you are using a remote antenna connected to the rear of the unit, do not connect an antenna to the top connector. See page 22 for antenna options, or refer to the Listen website for remote antenna options, www.listentech.com.

LA-122 Remote Antenna See RF Reception Maximization Strategies and Coaxial Cable on page 13.

Coax antenna connection. Rear of LT-800 shown.

rubber plug
LT-800 shown with top mount antenna connected through top of unit (part numbers LA-101, LA-106 (72 MHz) or LA-102 (216 MHz)

4 Connect Power Plug the power supply into the power connector on the back panel, then plug the power supply into an outlet. Only use a Listen approved power supply (The LA-207, an in-line switching power supply, is the approved power supply for this unit).
12 VDC 1.3 A

5 Select Phonak Compatibility (if necessary) If you will be using Phonak receivers with your LT-800 (216 MHz only), the transmitter can become completely compatible through software control. When switched to this mode, the LT-800 transmitter will display the Phonak channels. By integrating Phonak channels and compatibility into the LT-800-216, it is more convenient to use Phonak receivers with Listen transmitters. (www.phonak.com)
7

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LT-800 Setup Instructions (cont.)
To Select Phonak Mode: Press and hold down the channel select “up” button while powering on the unit. The LCD will display a “P” momentarily upon power up indicating that the transmitter is in the Phonak Channel Mode. The channels displayed will now match Phonak channels. To return to the Listen channel designations, repeat this process. The LCD will display an “L” momentarily upon power up indicating that you are in the Listen Channel Mode.
6 Select Channel Mode (if necessary) Your transmitter has been shipped to you with only a limited number of channels available (Basic Mode). If all channels (Expanded Mode) are required, use the following procedure.
To Select Expanded Mode: To enable or disable the Expanded Mode, press and hold the channel select “down” button while powering on the unit. When the Basic Mode is enabled, “L/O” (lockout) will be displayed on the LCD display as shown below. This indicator is extinguished when in the Expanded Mode.
7 Set SQTM (Super Quiet) and Process Features Your transmitter is shipped to you with SQ (super quiet) enabled and Process disabled. For a detailed description of these features and when to use them, please refer to page 12.
To Disable or Enable SQ and Process Features: With the unit on press and hold the channel select “Down” button for 8 seconds. The program (PGM) icon will appear on the LCD.
Once in the program mode,
Program icon
the SQ and Process featurs can be turned on and off by pressing the channel select buttons. Press the channel select “Up” button to toggle between Process On and Off. Press the channel select “Down” button to toggle between SQ On and Off.
LED lit when Process is enabled

If the green LED is illuminated on the front panel, that feature is enabled. Once you have enabled or disabled the features as desired, let the transmitter exit the program mode by waiting 5 seconds.

LED lit when SQ is enabled

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LT-800 Setup Instructions (cont.)

8 Set RF Power Set the RF POWER switch on the back of the unit to Full, 1/2 or 1/4 (Level is indicated on the LCD display). The amount of transmitted RF power that you will need depends on your application. If you are operating multiple transmitters in the same environment, it is best to set the transmitters output power to its lowest level to reduce the possibility of interference.

12 VDC 1.3 A
Back of LT-800 unit

Full power
1/2 power
1/4 power

9 Connect Audio Inputs The LT-800 has two audio input options: Input 1 and Input 2. Input 1 is a balanced connection using either an XLR or 1/4″ phono connector. Input 2 has two unbalanced mixing phono connectors. Use Input 1 if you are using a microphone or if you have a balanced connection such as from a professional audio mixer (you can also use Input 1 for unbalanced connections). Use Input 2 to connect to an unbalanced audio source.

Input 1

Connect the audio source(s) to one or both audio

input connections. Input 1 offers a choice of

Line

balanced XLR or 1/4″ phono connector.

Back of LT-800 with XLR connected to Input 1

Plug your microphone into Input 1 and move

Mic

the input select switch to Mic (for dynamic

microphones) or Mic + PH Power (for condenser

microphones).

Mic with Phantom

12 VDC 1.3 A

Plug your balanced or unbalanced audio source

Power

into Input 1. Use the following diagram.

XLR Wiring

1/4″ Phone Wiring

– +

7 Input 2 Plug your unbalanced audio source into Input 2 and select the audio level switch for -10dBu or +10dBu, to match the audio level coming from your equipment.
9

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LT-800 Operating Instructions
1 Power Unit On Turn power on by pressing the power button.
2 Select a Channel Select the transmit channel by pressing the channel select UP and DOWN buttons. See Channel Selection on page 14 for more information.
Channel Select UP and DOWN buttons
NOTE: The LT-800 is shipped with only limited channels (Basic Mode). To select from all channels (Expanded Mode) refer to page 12. (for a more detailed description of Basic and Expanded Mode refer to page 12)
3 Lock on Channel Once you determine your transmit channel, you can lock the transmitter on that channel. To lock a channel hold the Channel Select “Up” button for 3 seconds until the padlock icon appears on the display. To unlock, repeat this process and the padlock icon will disappear.
Lock icon
4 Test Tone (if necessary) To broadcast a test tone, press the test tone button. This helps to test receivers when no audio source is available.
Press Test Tone button here
10

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LT-800 Audio Control
1 Adjust Audio Input Level Adjust the input knob counterclockwise to add gain to Input 1. This will decrease gain to Input 2. Adjust input knob clockwise to add gain to Input 2. This will decrease gain to Input 1. If you have two audio sources connected to both Input 1 and 2, adjust the level of one input using the VU meter, then adjust the output level of the other audio source. Adjust the input level until the left VU meter(s) occasionally illuminate the red LEDs. Illumination of the red LEDs indicates the unit is in limiting. Limiting is required so that the unit does not over-modulate the transmitter. If you don’t want any audio limiting to occur, make sure the red LEDs never illuminate. If you want a highly limited signal, turn the audio gain up so the red LEDs illuminate often.
2 Adjust Contour Adjust the Contour knob counterclockwise if your audio source is mostly voice. Adjust the knob clockwise if your audio source is mostly music. The Contour knob adjusts the relative equalization of the unit. This equalization boosts or cuts frequencies above 5 kHz.
3 Adjust Mix Level Adjust the mix level until the right VU meter occasionally illuminates the red LED. This is the level adjustment for the combined output from Input 1 and Input 2. If you are using another manufacturers’ receivers with the LT-800, determine the frequency of their receivers then refer to Listen’s Frequency Compatibility Tables (pages 15-16) to find the LT-800 channel that corresponds with the receiver’s frequency. We recommend verifying corresponding channel designations on these tables to ensure compatibility and provide the best possible reception. The LT-800 is Phonak compatible and can be set to display Phonak specific channels. See page 8 to set Channel Mode and page 14 for specific channel designations.
11

Listen SQTM (Super Quiet) – Improving Your Listening Experience

People 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 minimize noise, Listen uses a noise reduction technology called ListenSQTM. Both the transmitter and receiver must have the SQ feature enabled to achieve the desired results. SQ is available on new Listen systems, including the system you received in this shipment. If you are planning to use this product with older Listen systems that do not have Listen SQ, or equipment not manufactured by Listen, you must disable Listen SQ.
Your Listen LT-800 has been shipped to you with the SQ feature enabled. You may need to disable the SQ function for one or more of the following reasons:
1 You are using your new Listen LT-800 with older version Listen receivers that do not have the SQ function.
2 You are using your new Listen LT-800 with equipment supplied by other manufacturers (Listen is the only manufacturer using SQ Technology).
3 You expect that end users will bring and use their own receivers that don’t have the SQ function.
NOTE: See page 8 to enable or disable SQ (Super Quiet).

SQ Summary · SQ is NOT squelch
· SQ improves noise performance by at least 20dB
· SQ is NOT compatible with older version Listen products
· SQ is NOT compatible with other manufacturers’ products
· To work properly, SQ must be enabled for both the transmitter and receivers
· SQ can be disabled to permit operation with older Listen products or other manufacturers’ products

Process Mode
Process mode is used for Audio Gain Control (AGC). With the process mode enabled, the LT-800 will automatically adjust for inconsistent signal input levels by raising or lowering the signal level accordingly to provide a consistent sound output level. This feature should be used in applications where a consistent sound level is important and the input levels vary substantially. Typically you would not want to engage the Process Mode when a speaker’s emphasis is critical to the message they are conveying.
Basic and Expanded Mode
In the default Listen channel mode, only the most commonly used channels are available. This is called “Basic Mode”. When the LT-800 is in Basic Mode, “L/O” (lock-out) will be displayed on the LCD, meaning some transmission channels are unavailable. If the channel needed is not available in Basic Mode, access to all transmission channels is achieved in “Expanded Mode”. To access Expanded Mode press and hold the channel select “down” button while powering on the unit. To return to Basic Mode, repeat the same process of powering on the unit while holding the “down” button.

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RF Reception Maximization Strategies
For proper and dependable operation, Listen receivers need to receive a strong and consistent signal from the originating transmitter. Note that on portable receivers the headset wire is the receiving antenna. The following strategies should be used maximize this signal: 1 When designing and installing your system, keep in mind that the location of both the
transmitting and receiving antennas is critical to maximize broadcast range. 2 Eliminate or minimize obstructions between the transmitting and receiving antenna. 3 Minimize the distance between the transmitting and receiving antennas. 4 Move transmitting and receiving antennas away from metal or conductive objects. 5 Place the transmitting antenna as high as possible. 6 Orient both transmitting and receiving antennas vertically. 7 Position the RF Power switch on the back of the LT-800 to full RF Power, unless lower power is
necessary (see page 9). 8 Keep coaxial cable from transmitter to antenna as short as possible.
CAUTION: When installing antennas, ensure the antenna is clear of power lines.
Coaxial cable, connectors, and optional antenna mounting kits are available from Listen. See page 22-23, visit www.listentech.com or ask your dealer for details.
Coaxial Cable
The antenna for the LT-800 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 other than the top of the unit, you must use cable and connectors rated at 50 ohms. Although cable used for cable TV installations looks similar to this cable, it will not work with your Listen system.
If you need to run cable over a length greater than 50 feet for 216 MHz applications or greater than 100 feet for 72 MHz applications or to maximize 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.
Long cable runs can result in signal degradation due to the “loss” characteristics of the cable. When using RG-58 with a 72 MHz transmitter, there is an average* loss of 4 dB per 100 feet of cable and at 216 MHz using RG-58 an average* loss of 8 dB per 100 feet of cable. (A 3dB loss means half of your power has been lost.) However, it is better to suffer coaxial power loss than to try to shoot your signal through obstacles! Obstacles, especially metal, can create drop-outs or reflections of your signal that will result in poor listening conditions.
*NOTE: There are many varieties of 50 ohm, RG-58 and RG-8 cables. You may purchase a cable that is better or worse than this value. Please check with the cable vendor or manufacturer for exact specifications.
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Channel Selection

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. Before turning on the transmitter, listen to the wide band channels on the receivers (lettered channels at 72 MHz and channels that start with a “2” for 216 MHz when using a Listen receiver). Listen to the audio through the headphone or via the speaker and choose a channel with the least amount of interference. Unless you are interfacing with an existing narrowband transmission system, always use a wide band channel.
If you are using multiple channels follow this process:
1. Same Space If you are using multiple transmitters in the same space, the highest number of channels that will work simultaneously is six at 72 MHz and three at 216 MHz. With all of the transmitters off, listen for interference on all the wide band channels with a Listen receiver. Using the frequency compatibility tables on pages 15-17, eliminate any channels that have noticeable interference. Now choose the channels with the widest channel spacing. It is recommended that adjacent channels be spaced at least 300k Hz apart. If there is no interference the following channels are recommended. For a 72 MHz system, use channels A, C, E, I, J and H. For a 216 MHz system, use channels 2A, 2K and 2V.
2. Distributed Spacing If you are using transmitters that are distributed over a large area, you can achieve more simultaneous broadcast channels. However, it is critical that your receiver(s) be located as close to its transmitter as possible. You can use adjacent channels (see frequency compatibility tables (on pages 15-17) in this case as long as the adjacent channel transmitter is at least 50% further away from the receiver than the original transmitter. Example: The transmitter for the receiver on channel E is 100 feet from the receiver. The adjacent channel transmitter on channel D should be at least 150 feet away.
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 the LT-800, press the “UP” button for 3 seconds. Repeat the process to unlock.
Notes in regard to using 72 MHz and 216 MHz systems:
1. 72 MHz is 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 types of transmissions. You will need to find a clear channel by listening to all the wide band channels.
2. 216 MHz is a primary frequency band and no other types of transmissions are authorized to use it. Thus, you will find the highest probability of clear channels in this band. However, you may experience intermodulation of the TV Channel 13 aural carrier if there is a channel 13 transmitter in your area and you are close to the transmitter. If you cannot find a clear channel in 216 MHz band due to channel 13, it is recommended that you switch to a 72 MHz system.

Wide Band Recommendation Listen recommends that you always use a wide band channel unless you need to be compatible with existing narrow band receivers from other manufacturers. Wide band channels have lower noise than their narrow band counterparts.
At 72MHz The LT-800 at 72 MHz operates on 17 wide band channels and 40 narrow band channels.
· Letters= Wide Band Channels (Example: E)
· Numbers= Narrow Band Channels (Example: 32)
At 216MHz The LT-800 at 216 MHz operates on 19 wide band channels and 38 narrow band channels.
· “2” as left digit= Wide Band Channel (Example: 2C)
· “1” and “3” as left digits= Narrow Band Channels (Examples: 1A; 3R)

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72 MHz Compatibility Chart
Wideband frequencies are indicated in highlighted rows. The highlighted channels also indicated those channels available in the “basic” mode (default). All channels can be accessed when in the “expanded” channel mode (see page 8 for more information). *Parenthesis indicate T35 and T20 narrowband.
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216 MHz Compatibility Chart

upd 03.16.04

Frequency

Phonic

MHz

Listen Ear

Comtek Phonak Williams Gentner CSI

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

216.5250

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

AVR Speed C01
C05
C09 C12
C18 C21

C24 C25

C29

C32

C33

Wideband frequencies are indicated

in highlighted rows. The highlighted

channels also indicated those channels

available in the “basic” mode (default).

All channels can be accessed when in

the “expanded” channel mode (see page

C37

8 for more information).

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Phonak Frequency Chart

Frequency (MHz)
216.012 216.025 216.037 216.062 216.075 216.088 216.113 216.125 216.137 216.162 216.175 216.188 216.213 216.225 216.238 216.262 216.275 216.287 216.312 216.325 216.338 216.363 216.375 216.387 216.412 216.425 216.438 216.512 216.525 216.537 216.562 216.575 216.588 216.613 216.625 216.637 216.662 216.675 216.688 216.713 216.725 216.738 216.762 216.775 216.787 216.812 216.825 216.838 216.863 216.875 216.887 216.912 216.925 216.938 216.963 216.975 216.988

Listen
1A 2A 3A 1B 2B 3B 1C 2C 3C 1D 2D 3D 1E 2E 3E 1F 2F 3F 1G 2G 3G 1H 2H 3H 1J 2J 3J 1K 2K 3K 1L 2L 3L 1M 2M 3M 1N 2N 3N 1P 2P 3P 1R 2R 3R 1S 2S 3S 1T 2T 3T 1U 2U 3U 1V 2V 3V

Phonak
1 41 2 21 42 4 5 43 22 23 44 8 9 45 24 25 46 12 13 47 26 27 48 16 17 49 18 61 29 62 28 52 64 65 53 81 82 54 68 69 55 83 84 56 72 73 57 76 85 58 86 77 59 88 79 60 80

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LT-800 Troubleshooting
Troubleshooting
The LT-800 has no power Make sure the LA-207 power supply is connected to a power source and is connected to the jack marked “Power Input”. Make sure the POWER button is pressed in.
There is no audio or the audio level is too low Make sure that your audio source is properly connected to Input 1 and/or Input 2. The Input 1 or Input 2 switches must be in the correct position for the appropriate input level. For example: if you are using the output of a mixer on Input 2, the switch should be in the -10dBu position. If it were to be in the +10dBu position, the level would be too low. Also, check the Input knob to ensure it is properly adjusted. You should be able to see the VU meter deflect on Input 1 or Input 2 corresponding with the input level of the audio source. You can listen to the audio source by connecting a headset to the front panel jack and adjusting the Monitor volume control.
If the level of audio into the transmitter is low and can’t be corrected using the level input switches, the audio processor can be turned on to boost the signal (see page 8 to set, page 12 for description of Process Mode).
The audio is distorted Check to make sure you have the input level select switches in the proper position. You may be providing too much audio level for the input stage to handle. Make sure the SQ mode is set correctly on both the LT-800 and the receivers you are using. If your receivers do not have SQ, make sure the SQ mode is turned off (see page 8).
There is hum in the audio Make sure you have properly grounded the audio source to the LT-800. Check the connections from the audio source to the LT-800. If you can, try to use a balanced audio source – this will reduce the chance of creating hum. Connect a ground wire from the LT-800 to ground and/or to the ground of the source audio.
There is a tone The Test Tone button has been pressed (its LED light is on). Push the Test Tone button to turn off the tone.
The Audio Input 1 sounds “tinny” If you are using an unbalanced audio source, make sure Pin 3 on the XLR or the ring on the ¼” plug is grounded (see page 9).
I cannot pick up the signal on the receiver Check to make sure the receiver and the transmitter are using the same frequency band (i.e. 72 MHz or 216 MHz) and that they are on the same channel. Make sure the LT-800 has an antenna connected. Ensure that the receiver has an antenna (for portable products the headset is the receiving antenna).
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. It’s a good idea to lock the channels once they have been set. To lock the LT-800, press the UP button for 3 seconds (see page 10).
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LT-800 Troubleshooting (cont.)
Troubleshooting
I’m using another brand of receiver – how do I tell which channel to use Refer to Listen’s Frequency Compatibility Tables (pages 15-17). Adjust Listen’s transmitter to the same frequency as the other major brand. Since Listen products can access 57 channels, they will most likely receive on the same fixed channel or channels of other major brands. If you are using another brand of receiver, make sure you have turned off the SQ feature on the Listen product(s).
There is not sufficient range First make sure that the receivers you are using are operating 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 unit (but not both!). The antenna should be as high as possible and free of obstacles. In addition make sure you are using the correct antenna type for your unit. You might want to use a remote antenna (provided by Listen) that can be mounted on a mast or wall. Try using different frequencies to find one with less interference.
There is interference in my transmission Ensure that the transmitter and receivers are on the same channel. Verify that there are no other transmitters on the same channel or a close channel to the one exhibiting interference. Try different channels until you find a clear channel. If this does not work, try a different frequency band (i.e. if you are using 72 MHz, try 216 MHz or vice versa). Please contact Listen support for assistance and a return authorization (RMA) number to exchange product for alternate frequency equipment.
End users are adjusting the unit First, lock the channel by pressing and holding the channel select UP button for 3 seconds. Consider removing the Input, Mix Level and Contour knobs. You can order a rack mount kit from Listen which offers a security cover that will limit access to the unit.
I am using other manufacturers’ receivers and the sound is distorted The receiver is probably not designed to handle the +25 kHz deviation of the Listen transmitter. This can be corrected by turning the Mix Level knob down. Another possibility is that you have enabled the SQ function of the LT-800, and this feature is not available in other companies’ products. You will need to disable SQ in this event (see page 8). If you are using Phonak receivers, the transmitter is capable of operating in the Phonak mode (please refer to page 8).
Several transmitters are operating in the same environment For this, you’ll need to choose your transmitting frequencies carefully. See page 15-17 for more details.
Can I have two antennas connected to my transmitter No. The LT-800 transmitter can use only one antenna connection at a time. You may connect either a top mount antenna through the top antenna port, or a remote antenna connected to the BNC connection on the rear of the unit. If multiple antennae are simultaneously connected to both ports the transmitter will have extremely poor broadcast performance and range.
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Compliance Notice & 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.
Listen’s LT-800 Transmitter (216 MHz only) Listen’s LT-800 transmitter is authorized by rule under the Low Power Radio Service (47 C.F.R. Part 95) and must not cause harmful interference to TV reception or United States Navy SPASUR installations. You do not need an FCC license to operate these transmitters. These transmitters may only be used to provide: auditory assistance to persons with disabilities, persons who require language translation, or persons in educational settings; health care services to the ill; law enforcement tracking services under agreement with a law enforcement agency; or automated maritime telecommunications system (AMTS) network control communications. Two-way voice communications and all other types of uses not mentioned above are expressly prohibited.
This device must be installed by a trained audio professional or certified dealer of Listen. The user can’t make any modifications to the unit without expressed written consent of Listen Technologies Corporation. Any modifications made will void the FCC compliance, Listen warranty and the users authority to operate Listen’s equipment.
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. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This equipment has been certified to comply with the limits for a class B computing device, pursuant to FCC and IC Rules. In order to maintain compliance with FCC and IC regulations, shielded cables must be used with this equipment. Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the equipment without the approval of manufacturer could void the user’s authority to operate this equipment.
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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.
Listen warrants its Stationary IR Radiators (LA-140) to be free from defects in workmanship and material under normal use and conditions for three years from the date of purchase.
Listen warrants its Noise Canceling Microphone (LA-270) to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase.
Listen warrants its Charging/Carrying Cases (LA-306, LA-311, LA-313, LA-317, LA-318, LA-319, LA-320, LA-321, LA-322, LA-323, LA-324, LA-325) to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase.
All other products and accessories are warranted for 90 days from date of purchase.
This warranty is only available to the original end purchaser of the product and cannot be transferred. Warranty is only valid if warranty card has been returned within 90 days of purchase. This warranty is void if damage occurred because of misuse or if the product has been repaired or modified by anyone other than a factory authorized service technician. Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the result of a manufacturing defect. Listen is not liable for consequential damages due to any failure of equipment to perform as intended. Listen shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it. Listen specifically disclaims and negates any warranty of merchantability or fitness of use of such equipment including, without limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws and regulations. The terms of the warranty are governed by the laws of the state of 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. Product that is not covered under warranty shall be repaired or replaced with a unit of similar type and condition based on a flat fee. Contact Listen for details.
This limited warranty, prices and the specifications of products are subject to change without notice.

Contacting Listen

If technical service is needed, please contact Listen. Pre-authorization is required before returning Listen products. If products were damaged in shipment, please contact the carrier, then contact Listen for replacement or repair requirements payable by the carrier.

Listen’s corporate headquarters are located in Bluffdale, Utah U.S.A. and are open Monday through Friday, 8am to 5pm Mountain Time.

14912 Heritagecrest Way Bluffdale, Utah 84065-4818 +1.801.233.8992 +1.800.330.0891 North America +1.801.233.8995 fax
support@listentech.com www.listentech.com

Listen Technologies GmbH Jasminstr.16, 90522 Oberasbach, Germany +49 911 955 159 0 Europe +49 911 955 159 40 Fax support@listentech.de www.listentech.de

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Optional Accessories
Antenna Accessories

LA-101 Helical Top Mounted Antenna
(72 MHz)

LA-102 Telescoping Top Mounted
Antenna (216 MHz)

LA-106 Telescoping Top Mounted
Antenna (72 MHz)

LA-107 Ground Plane Remote Antenna
(216 MHz)

LA-122 Universal Antenna Kit
The single solution for all of your indoor remote antenna needs. Includes: 72 and 216 MHz components; flexible and rigid dipoles and monopole radials; hardware for multiple mounting configurations; and 25 feet (7.6m) of RG-58 coax cable.

LA-123 90° Helical Antenna
(72 MHz)
LA-124 90° Helical Antenna
(216 MHz)

LT-800 Rack Mount Accessories

LA-125 (72 MHz) and LA-126 (216 MHz) Antenna Kit for Rack Mount
22

LA-326 Universal Rack Mounting Kit
Includes components for single and dual rack configuration and a security cover
NOTE: Rack mounted units cannot use the LA-106, LA-102 or LA-101 top mounted antenna.

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Optional Accessories (cont.)
Cable & Connectors Accessories

LA-112 RG-58 50 Ohm Coaxial Cable (per ft.)

LA-113 RG-8 50 Ohm Low-Loss Coaxial Cable (per ft.)

LA-127 RG-58 BNC Connector

LA-128 RG-8 BNC Connector

LA-390 RG-8 50 Ohm Preassembled
Coaxial Cable (per ft.)

LA-391 RG-58 50 Ohm Preassembled
Coaxial Cable (per ft.)

Microphone Accessories

LA-261 Lavalier Microphone

LA-262 Over-the-Head
Microphone

LA-270 Noise Canceling
Microphone

LA-274 Hand-Held Microphone

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LA-276 Collar Microphone

LA-277 Conferencing Microphone

LA-278
Behind-the-Head Microphone

LA-279 Over-the-Ear Microphone
Presentation Style

LA-280 ¼ in. to 3.5 mm
Microphone Adapter for LT-800/LT-82

NOTE: To use Listen microphones you must use a converter (LA-280) to adapt the 3.5 mm connection to a 1/4″ phono connection.

Notes
24

Notes
25

Notes
26

Notes
27

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.com
© 2016 Listen Technologies Corporation® All Rights Reserved 010416

Documents / Resources

LISTEN TECHNOLOGIES LR-4200 iDSP Receiver [pdf] User Manual
LR-4200-072, LR-4200-216, LR-4200 iDSP Receiver, iDSP Receiver, Receiver

References

User Manual

LISTEN TECHNOLOGIES LR-4200 iDSP Receiver User Manual

LR-4200 iDSP Receiver

Product Information

Specifications

Product Usage Instructions

iDSPTM Receivers

LR-4200 Quick Reference

Frequently Asked Questions (FAQ)

Q: How do I charge the LR-4200 receiver?

Q: Can I wear the LR-4200 receiver as a necklace?

Documents / Resources

References

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