Overview
For businesses or venues requiring anywhere from one to three channels of assistive listening audio, the LT-803-072 Stationary 3-Channel RF Transmitter is an excellent choice. Universal inputs allow for the use of nearly any audio source including mixers, micrphones, MP3 players, and more, and our signature Look & Listen (TM) LCD display provides immediate information about channel, lock, and RF power. The LT-803-072 also includes a power supply making it easy to set up and start using right away.
Includes
One (1) LT-803-072 Stationary 3-Channel RF Transmitter (72 MHz)One (1) Power supplyOne (1) Quick Reference Card
Features
- Affordable, feature-packed transmitter option for basic assistive listening systems
- Three-channel design makes it simple to install, manage, and use
- 100% digital audio transmission for solid, reliable signal
- Look & Listen LCD display
- Works with any audio source on the market
- 30-day, no-obligation demonstration available for your venue
- Compatible with a wide range of Listen Technologies accessories
Configurations & Architectural Specs
ConfigurationsLT-803-072-01 Stationary 3-Channel RF Transmitter (72 MHz) (North America)
Architectural SpecsThe stationary RF 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
| Specification | LT-803-072-01 |
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Audio |
| Frequency Response | 50 Hz - 15 kHz (±3 dB) | | Signal-to-Noise Ratio | 62 dB (A-Weighted) | | Audio Input 1 | 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 ohm (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 ohm | | Audio Processing | 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 | | Distortion | < 2% total harmonic distortion (THD) at 80% deviation | | Audio Output | 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 | Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm |
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Controls |
| User Controls | Front Panel: Power, Test Tone on/off, Channel up/down, Input Levels, Mix Level, Contour, Monitor volume controlRear 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 |
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Indicators |
| LCD | Channel Designation, lock status, RF power level (front panel) | | Audio Input Status LEDs | 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) | | Test Tone | Red LED illuminates when test tone is enabled | | RF Power | Indicated on the LCD (low, mid, high) |
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RF |
| Frequency Range | (A) 72.100, (E) 72.900, (H) 75.900 | | Number of Channels | 3 wide band | | Frequency Accuracy | ± .005% stability 0 to 50ºC (32 to 122º) | | Antenna Type | Various antennas available | | Transmitter Stability | 50 PPM | | Transmission Range | Up to 305 m (1,000 ft.) | | Antenna Connector | BNC | | Output Power | 80,000 uV at 3 m |
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Power |
| Power Supply | In line power supply, Listen part number LA-207 (Line cord is determined by the each Country's AC power standards) | | Power Supply Input | 100-240 VAC, 50-60 Hz, 0.4 A | | Power Supply Output | 12 VDC, 1.3 A, 15.6 W | | Power Supply Connector | 5.0 mm (0.02 in.) OD, 2.5 mm (0.01 in.) ID, barrel type | | Compliance | UL, CE, GS, TÃœV, RoHS |
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Physical |
| Width | 21.5 cm (8.50 in.) | | Height | 4.5 cm (1.75 in.) | | Depth | 23 cm (9.13 in.) | | Color | Dark Grey with white silk screening | | Unit Weight with Power Supply | 2.0 kg (4.5 lbs.) | | Shipping Weight | 2.7 kg (6.0 lbs.) | | 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) | | Weight | 1.2 kg (2.6 lbs.) |
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Environmental |
| Temperature - Operation | -10 ºC (14 ºF) to +40 ºC (104 ºF) | | Temperature - Storage | -20 ºC (-4 ºF) to +50 ºC (122 ºF) | | Relative Humidity | 0 to 95% relative humidity, non condensing |
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Compliance |
| RF | FCC Part 15, Part 90, Industry Canada |
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