Listen Technologies ListenIR Transmitter/Radiator Combo

Listen Technologies ListenIR Transmitter/Radiator Combo

Listen Technologies ListenIR Transmitter/Radiator Combo

B&H # LILT8401 MFR # LT-84-01
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Listen Technologies LT-84-01 overview

  • 1Description

The ListenIR Transmitter/Radiator Combo from Listen Technologies is a transmitter/radiator with up to four frequencies, including 2.3 MHz, 2.8 MHz, 3.3 MHz, or 3.8 MHz. It has expansion radiators that implement delay compensation, providing no signal cancellation drop outs.

Selectable 2.3, 2.8, 3.3, or 3.8 MHz frequencies
Flexible input connectivity of mic, RCA stereo sum, and Phoenix line level summed on each input channel
Table of Contents
  • 1Description

Listen Technologies LT-84-01 specs

Frequency Response 20 Hz to 20 kHz (+/-1 dB)
Line Input: 63 Hz to 15 kHz (+/-3 dB)
Signal to Noise Ratio >70 dB (SNR)
Line Input: >60 dB
Total Harmonic Distortion <0.1%
Line Input: <2%
Input Balanced Line: mono input 2 x phoenix type connectors, +4 dBu nominal input, +14 dB headroom, impedance 100 kOhms Unbalanced: stereo/mono input 2 x dual (RCA) phono connectors, -10 dBu nominal input, +14 dB headroom, impedance 10 kOhms
Microphone: 2 x 3.5 mm tip/sleeve connector, -30 dBu nominal input, +14 dB headroom, impedance 4.4 kOhms, 5 VDC bias supply
Power Switch 3 position switch with Power OFF and ON
Level Control Knob: 2 x audio taper rotary potentiometer, counter-clockwise decreases input mix level, clockwise increases input mix level
Carrier Frequency Selection: two 4-position rotary switches (2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz)
Power Supply Green LED on in-line power supply indicates AC power is applied
Audio Level 2 x green LEDs, 2 x red LEDs
Green LED indicates audio presence and red LED indicates peaks in the audio
RJ-45 Solid amber LED indicates carrier is present and IR is being transmitted
Solid green indicates power is applied to unit, flashing indicates unit has entered power save mode
RF Specification
Frequency Range 216.0125 to 216.9875 MHz
Number of Channels Two channels, selectable carrier frequency
Frequency Accuracy ±.005% stability 32 to 122°F (0 to 50°C)
Stability Transmitter: 50 PPM
Output Expansion Link: 2 x RJ-45 connectors provide RF signal and power, CAT-5e cable 24 AWG, 100' (30.48 m) maximum cable length
Modulation FM Wideband, ±50 kHz deviation max, 50 μS pre-emphasis
Carrier Frequency 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz, selectable
Power Save Mode Carrier will shut off when no audio is present for 15 minutes on both channels to preserve radiator life
IR Interface
Power 1.49 W
Coverage Depends on receiver
Power Supply In-line switching mode power supply
Power Supply Input 100-240 VAC, 50-60 Hz
Power Supply Output 12 VDC, 4 A, 48 W
Power Supply Connector 0.01" (2.5 mm) ID barrel connector, center positive
Line Cord IEC line cord
Operating Temperature 14 to 104°F (-10 to 40°C)
Storage Temperature -4 to 122°F (-20 to 50°C)
Humidity (Non-condensing) 0 to 95% relative humidity
Color Black with white silk screening
Dimensions 1.5 x 10.7 x 4.1" (3.81 x 27.2 x 10.5 cm)
Weight Unit: 0.8 lbs. (0.4 kg)
Unit with Power Supply: 1.8 lbs. (0.8 kg)
Compliance and Approvals
Power Supply CUL, UL, CE, CCC, C-Tick, KC, PSE, GS, FCC, RoHS
Standards FCC part 15, ICS-03, CE, UL, CUL, C-Tick, CCC, PSE, KC, GS, RoHS, WEEE
Packaging Info
Package Weight 3.15 lb
Box Dimensions (LxWxH) 13.6 x 10.1 x 3.1"

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