LT 800 150 04

User Manual: Pdf LT-800-150-04

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LT-800-150-04
Stationary RF Transmitter (150 MHz)

Configuration:
LT-800-150-04 Stationary
RF Transmitter (150 MHz)
(Australia)
Product Overview:
Thanks to its outstanding audio quality, the Listen LT-800-150 Stationary RF Transmitter can be used in a variety of applications. The LT-800-150 is excellent for
assistive listening, language interpretation, or other applications where running cable may not be an option. This transmitter is a great choice for interfacing to an
existing sound system and broadcasting the desired sound throughout a venue. The LT-800-150 offers versatility with many different input connections; line or mic
level, balanced, and unbalanced. It can be rack mounted with our optional universal rack mount kit or placed on a shelf. The LT-800-150 offers 32 frequencies for
easy set up for a clear interference free channel. The end result - the audience can hear and understand the presentation.
Note: for use in Australia
Highlights:
•

Superior Audio Quality - 80 dB signal-to-noise ratio, setting the industry's sound quality standard

•

With a choice between 32 channels, Listen products are ideal for a wide range of applications

•

100 % Digital - Listen receivers are digitally-tuned so transmission won't drift; assurance that when a channel is selected, it stays on that channel

•

Up to six (6) simultaneous transmitted channels

•

Look & Listen™ LCD shows channel, channel lock, and programming information

•

Balanced/Unbalanced Inputs - user can interface with any audio source on the market

•

Designed for installation - rack mountable with optional remote antennas make installation easy and service reliable

•

Limited Lifetime Warranty

•

Auto Processor - to condition the audio for voice/music prior to transmission

•

VU level meter and test tone - simply makes the installation easier to set-up

•

30-day no obligation demonstrations available

•

Many accessory options make Listen products ideal for a wide range of applications

Includes:
One (1) LT-800-150 Stationary RF Transmitter (150 MHz)
One (1) User manual
One (1) LA-207 Power Supply for LT-800
One (1) Line Cord
Architectural Specification:
The stationary RF transmitter shall be capable of broadcasting on 32 channels. The transmitter shall have an SNR of 80 dB or greater. The output power shall be
adjustable to quarter, half or full. Channel tuning shall be capable of being locked. The device shall have an audio frequency response of 50 Hz to 15 kHz (‘±3 dB). It
shall have two (2) mixing audio inputs and a mixed signal output. The device shall have the following audio controls: input level, mix level and an adjustable low pass
filter (contour). The device shall have an audio processor that is capable of automatic gain control and limiting. The Listen LT-800-150 is specified.

Listen Technologies Corporation * 14912 Heritage Crest Way * Bluffdale * Utah 84065-4818 U.S.A.
+1.801.233.8992 * +1.800.330.0891 North America * +1.801.233.8995 Fax
Listen Technologies Corporation All rights reserved 91407 - Created May 9, 2016
Stationary RF Transmitter (150 MHz)

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LT-800-150-04
Stationary RF Transmitter (150 MHz)

Stationary RF Transmitter (150 MHz) Product Features:
1. POWER: Easy access from the front to turn unit On/Off.
2. INPUT 1 & 2 AND INPUT LEVEL INDICATORS: Adjust audio levels of Input 1 and 2. Dual VU meters shows audio Input 1 and 2 levels.
3. MIX LEVEL & MIX TRANSMIT LEVELS: Mix Level control sets level of mixed audio. VU meter shows the output level of your mixed audio.
4. CONTOUR: Contour equalization Cuts/Boosts frequencies above 5 kHz.
5. PROCESS LED: Processing (automatic gain control and compression) can be turned on and off from the front panel.
6. SQ™ LED: (Super Quiet Companding Technology) can be turned on and off from the front panel.
7. LCD DISPLAY: Shows channel selected, channel lockout, programming, and RF power.
8. RF ANTENNA OUTPUT: Top mount antenna jack for top mounted telescoping antennas.
9. MONITOR LEVEL: Earphone jack and volume control to check audio integrity of transmission source.
10. CHANNEL SELECT: UP/DOWN channel selection of 57 channels. User can easily change between Basic and Expanded modes.
11. TEST TONE: The test tone level is adjustable, which adds flexibility when setting up and testing system.
12. RF ANTENNA OUTPUT: Top mount, rear mount, and remote antenna options.
13. RF POWER LEVEL: Multiple transmitter power settings (full, ½ and ¼) with indication on LCD display.
14. POWER INPUT: In-line power supply (included) attaches.
15. AUDIO OUTPUTS: Two (2) phono connectors for a mixed output of Inputs 1 and 2.
16. AUDIO INPUT 2: Two (2) unbalanced phono audio inputs. Select either +10 dBu or -10 dBu.
17. INPUT 2 LEVEL SWITCH: Set switch to match the level of Input 2 source.
18. INPUT 1 LEVEL SWITCH: Set switch for line or mic level. Phantom power available in Mic-PH power position.
19. AUDIO INPUT 1: Balanced XLR / ¼ inch audio input. Select either mic, line, or mic phantom power level for input. Electret (Condenser) microphones can be used
with Input 1, mic, and phantom power.

Product Specification:Stationary RF Transmitter (150 MHz)
Audio
Distortion

<2% total harmonic distortion (THD) at 80% deviation
Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable, +30 dBu
maximum, impedance 100k ohms

Audio Input 2
Audio Processing
Contour

Compression can be turned on/off. Slope internally adjustable from 1:1 to 4:1. Default 2:1
Cuts and boosts frequencies above 5 kHz

Frequency Response

50 Hz - 15 kHz (±3 dB)

Signal-to-Noise Ratio

SQ enabled 80 dB, SQ disabled 60 dB

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LT-800-150-04
Stationary RF Transmitter (150 MHz)

Rear panel, one (1) Female XLR and 1/4 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 1

Headphone Output

Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu
maximum, impedance 10 ohms
Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal
output level, +15 dBu maximum, impedance 10 ohms

Audio Output

Controls
Internal Adjustments

Compression ratio for audio processor

Programming

Process on/off, SQ on/off, channel lock

User Controls

Front Panel: Power, Test Tone on/off, Channel up/down, Input Levels, Mix Level, Contour, Monitor
volume control Rear Panel: Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (-10 / +10 dBu),
RF power level (low, mid, high)
Indicators

Processing

Indicated by a green LED when on (front panel)

Audio Input Status LEDs
RF Power

Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)
Indicated on the LCD (low, mid, high)

LCD

Channel Designation, lock status, RF power level, programming (front panel)

Test Tone

Red LED illuminates when test tone is enabled
RF

Frequency Range

150.8000 MHz - 152.3500 MHz

Frequency Accuracy

± .005% stability 32 to 122º (0 to 50ºC)

Number of Channels

6 wideband, 26 narrowband

Transmitter Stability

50 PPM

Number of Simultaneous Transmitters
Transmission Range

6
Up to 762 m (2500 ft.)

Output Power

<100 mW EIRP

Antenna Type

Various

Antenna Connector

BNC
Power

Power Supply

In line power supply (Listen part number LA-207)

Power Supply Connector
Compliance

0.02 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
UL, CE, GS, TÜV, RoHS

Power Supply Input
Power Supply Output

100-240 VAC, 50-60 Hz, 0.4 A
12 VDC, 1.3 A, 15.6 W
Physical

Depth
Clips

9.13 in. (23 cm)
Dark Grey with white silk screening

Height

1.75 in. (4.5 cm)

Width

8.50 in. (21.5 cm)

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LT-800-150-04
Stationary RF Transmitter (150 MHz)

Weight

2.6 lbs. (1.2 kg)

Unit Weight with Power Supply

3.5 lbs. (1.6 kg)

Shipping Weight
Rack Mounting

6 lbs. (2.7 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

Relative Humidity

0 to 95% relative humidity, non condensing

Temperature - Operation

-10 ºC (14 ºF) to +40 ºC (104 ºF)

Temperature - Storage

-20 ºC (-4 ºF) to +50 ºC (122 ºF)
Compliance

Safety

CE, ETSI, RoHS

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