LT-LT803-800-072

LT-803-072 Specifications

Architectural Specification

The Stationary FM Transmitter shall be capable of broadcasting on one of any three channels – A (72.100 MHz), E (72.900 MHz) or H (75.900 MHz). The transmitter shall have a SNR of 62 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 15k Hz, ± 3 dB at 72 MHz. It shall have two (2) mixing audio inputs. 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-803-072 is specified.

 

Specifications

LT-803-072

 

 

 

 

RF Frequency Range

(A) 72.100, (E) 72.900, (H) 75.900

 

Number of Channels

3 wide band

 

Frequency Accuracy

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

 

Transmitter Stability

50 PPM

RF

Transmittion Range

Up to 1,500 ft. (457.20 m)

 

Output Power

80,000uV at 3 m

 

Antenna

Various antennas available

 

Antenna Connector

BNC

 

Compliance

FCC Part 15, Part 90, Industry Canada

 

 

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

 

 

 

 

System Frequency Response

50 Hz - 15 kHz (±3 dB)

 

System Signal to Noise Ratio

62 dB (A-Weighted)

 

System Distortion

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

 

 

Rear panel, one (1) Female-XLR and ¼ in. combo connector, balanced, 0/-55 dBu (line/mic) nominal input level

 

Audio Input 1

adjustable, -30/+21 dBu (line/mic) maximum input level, impedance 20k/1k Ohm (line/mic),

Audio

 

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, +15 dBu maximum,

 

impedance 10 ohm.

 

 

 

Headphone Output (monitor)

Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 Ohm.

 

 

 

 

Front Panel

Power, Test Tone on/off, Channel UP/DOWN, Input levels, Mix level, Contour, Monitor volume control

Controls

Rear Panel

Input 1 Level (line, mic, mic-phantom power), Input 2 Level (-10/+10 dBu), RF Power level (low, mid, high)

Internal Adjustments

Compression ratio for audio processor

 

 

Programming

Process on/off. Channel lock

 

 

 

 

Input 1, Input 2, Mix Level VU

Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED’s (8 green, 2 red)

 

 

 

 

Processing

Indicated by a green LED when on (front panel)

Indicators

RF Power

Indicated on the LCD (low, mid, high)

 

LCD Display

Channel designation, lock status, RF Power Level, programming (front panel)

 

Test Tone

Red LED illuminates when test tone is enabled

 

 

 

 

Power Supply

In-line power supply. Listen part number LA-207 (line cord is determined by each country’s AC power standards

 

 

 

 

Power Supply Input

Input: 100-240 VAC, 50-60 Hz. 0.4 A

Power

 

 

Power Supply Output

Output: 12 VDC, 1.3 A, 15.6 W

 

Power Supply Connector

Output Connector: 0.02 in. (5.0 mm) OD, 0 .01 in. (2.5 mm) ID, barrel type

 

 

 

 

Power Supply Compliance

UL, CE GS, TUV, RoHS

 

 

 

 

 

 

 

Dimensions (H x W x D)

8.50 x 1.75 x 9.12 in. (21.6 x 4.45 x 21.16 cm)

 

 

 

 

Color

Dark grey with white silk screening

 

 

 

 

Unit Weight

2.6 lbs. (1.2 kg)

 

 

 

Physical

Unit Weight with LA-207-01 Power

3.5 lbs. (1.6 kg)

Supply

 

 

 

 

 

 

Shipping Weight

4.5 lbs. (2.0 kg)

 

 

 

 

Rack Mounting

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)

 

 

 

 

 

 

Temperature - Operation

-10˚C (14˚F) to +40˚C (104˚F)

Environmental

Temperature - Storage

-20˚C (-4˚F) to +50˚C (122˚F)

 

Humidity

0 to 95% Relative Humidity, non condensing

 

 

 

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Listen Technologies LR-200-072, LP-3CV-072, LA-161, LA-123 90 manual LT-803-072 Specifications, Architectural Specification

LA-123 90, LA-161, LT-803-072, LR-200-072, LP-3CV-072 specifications

Listen Technologies offers a range of innovative assistive listening solutions tailored to improve the audio experience for individuals in various settings. Among its popular devices are the LR-200-072, LP-3CV-072, LA-161, LA-123 90, and LT-803-072. Each of these products features advanced technology designed to enhance auditory comprehension, ensuring that all users can fully participate in events or activities.

The LR-200-072 is a lightweight, portable, and easy-to-use portable receiver. Its digital tuning provides clear sound reproduction, while the wide frequency response ensures that users hear every detail. The LR-200-072 supports multiple channels, allowing users to easily switch between audio sources in environments such as auditoriums and theaters. With its long-lasting battery, this receiver is ideal for extended use in any setting.

The LP-3CV-072, on the other hand, is a powerful transmitter that excels in broadcasting audio to multiple receivers, such as the LR-200-072. Featuring adjustable transmission power, the LP-3CV-072 ensures a strong and reliable signal, even in challenging environments. Its compact design and robust construction make it suitable for various applications, including conferences, language interpretation, and public announcements.

The LA-161 is a high-performance antenna that enhances the range and signal quality of Listen Technologies’ systems. This antenna is specifically designed to work seamlessly with the LR-200-072 and LP-3CV-072, optimizing the performance of the entire system. Its durable construction ensures reliability under various environmental conditions, while its design facilitates effortless installation.

For individuals who require additional assistance, the LA-123 90 is a versatile loop hearing device that helps users with hearing aids or cochlear implants. The LA-123 90 generates an electromagnetic field, allowing compatible devices to capture sound via the telecoil. This device ensures unobtrusive and clear audio transmission, significantly enhancing communication and understanding.

Lastly, the LT-803-072 is a robust and effective transmitter that offers multiple channels and a wide frequency range. This device is designed for compatibility with various Listen Technologies receivers, ensuring users can enjoy uninterrupted audio experiences. The LT-803-072 is particularly useful in settings like educational institutions, conferences, and places of worship, where clear audio is essential for engagement.

Together, these devices from Listen Technologies demonstrate a commitment to improving accessibility and enhancing the audio experience for individuals in various environments. Their advanced features, reliable technologies, and user-friendly designs set them apart as leaders in assistive listening solutions.