The Listen Tech LT-82 Stationary IR Transmitter is the heart of a stationary IR listening system. It takes the desired audio signal and transmits the signal via coaxial cable to one or more IR radiator-emitters (LA-140). The LT-82 can be operated in mono or stereo on one of four different carriers; up to four LT-82 units may be connected to provide up to four mono or stereo carriers to the radiator(s). The LT-82 generates DC power to power up to two LA-140 radiator-emitters. Two LT-82 units can be rack mounted in a single rack space using the LA-326 rack mounting kit. The LT-82 is used for government compliance (such as ADA), assistive listening, language interpretation, live theatre, houses of worship, courtrooms, secure rooms and for auditory description.
| Carrier Frequencies | 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz |
|---|---|
| Number of Channels | Four channels. Selectable one channel per transmitter (mono or stereo) |
| Carrier Shut Off | Carrier will shut off when no audio is present for 30 minutes to preserve radiator life |
| Frequency Accuracy | +/- .005% stability 0 to 50C |
| Transmitter Stability | 50 PPM |
| RF Output | (2) BNC connectors, for connection to radiator and additional transmitter.100 mV, 50 ohm, -10 dbm |
| RF Input | (1) BNC connector, for connection from additional transmitter(s).100 mV, 50 ohm, -10 dbm |
| System Frequency Response | 63Hz - 15kHz (+/- 3dB) |
| System Signal to Noise Ratio (A-weighted) | >58dB |
| System Distortion | |
| Front Panel | Power, Test Tone on/off, Channel up/down, Input Level, Transmit Level, Contour,Headset Level |
| Rear Panel | Input 1 Level (Line, Mic, Mic-Phantom Power), Input 2 Level (-10/+10 dBu), RF Power (low, mid, high) |
| Internal Adjustments | Compression ratio for audio processor. Slope adjustable from 1:1 to 4:1, Default 2:1 |
| Programming | Stereo on/off, Processing on/off |
| Unit Power | Red LED illuminates when the unit is powered up (front panel) |
| Input 1, Input 2, Transmit Level | Indicates Input 1, Input 2, and Transmit audio levels. 10 segment LEDs (8 Green, 2 red) |
| Stereo | Indicated by a green LED when on (front panel) |
| Processing | Indicated by a green LED when on (front panel) |
| RF Power | Indicates carrier is active on the LCD Display (front panel) |
| LCD Display | Channel designation, lock status, RF Power, programming (front panel) |
| Test Tone | Red LED illuminates when test tone enabled (front panel) |
| Temperature - Operation | -10 C (14 F) to +40 (104 F) |
| Temperature - Storage | -20 C (-4 F) to +50 (122 F) |
| Humidity | 0 to 95% relative humidity, non-condensing |
| Color | Dark grey with white silk screening |
| Dimensions (H x W x D) | 1.75" (45 mm) x 8.50" (216 mm) x 9.12" (232 mm) |
| Unit Weight | 2.6 lbs (5.7 kg) |
| Unit Weight with LA-205 Power Supply | 3.8 lbs (8.3 kg) |
| Shipping Weight | 4.4 lbs (9.7 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
