Listen Technologies – LT-800

Stationary RF Transmitter

Listen Technologies

Product Highlights

  • 57 selectable channels
  • Balanced and unbalanced signal inputs
  • Built in auto processor optimizes audio
  • Look & Listen LCD display for quick programming
  • VU level meter
Rentex No. LT80072TX

Stationary transmitter produces high quality audio signal in a wide range of applications. Operating in the 72-76 MHz range means no conflict with your existing wireless audio inventory. Inputs are either 2x RCA or a XLR 1/4″ combo, with a selectable mic/switch that also has phantom power if going directly in with a condenser microphone. There is also selectable RF power.

Frequency Response 50 Hz – 15 kHz (±3 dB)
Signal-to-Noise Ratio SQ enabled 80 dB, SQ disabled 60 dB
Audio Input 1 Rear panel, one (1) Female XLR or 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
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 SQ on/off, process on/off, channel lock
LCD Channel designation, lock status, RF power level, programming (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)


Frequency Range 72.025 – 75.950 MHz
Number of Channels 17 wide band, 40 narrow band
Frequency Accuracy ± .005% stability +32º to +122 ºF (0º to +50 ºC)
Antenna Type Various antennas available
Transmitter Stability 50 PPM
Transmission Range Up to 305 m (1,000 ft.)
Antenna Connector BNC, 50 Ohms (Use RG-58 < 100 ft or RG-8 > 100ft)
Output Power 80,000 uV at 3 m
Number of Simultaneous Transmitters Up to 8
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 0.02 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
Compliance UL, CE, GS, TÜV, RoHS
Width 21.5 cm (8.50 in.)
Height 4.5 cm (1.75 in.)
Depth 23 cm (9.13 in.)
Color Black with grey silk screening
Unit Weight with Power Supply 1.6 kg (3.5 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.)
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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