Listen Technologies ListenIR Transmitter/Radiator Combo(Listen Technologies Listenir Transmitter Radiator Combo)

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.

Listen Technologies ListenIR Transmitter/Radiator Combo

Audio
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

Controls
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)

Indicators
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 ?S 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
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

Environmental
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

Physical
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″