The Listen LT-700 Portable Display RF Transmitter is used to wirelessly broadcast audio for a variety of portable applications. Whether its voice or music, you can broadcast your audio to everyone in the audience without having to carry a microphone or be plugged into a wall. The LT-700 is excellent for factory tours, outdoor events, wireless microphone applications, classrooms, training, or personal use - anywhere you need to amplify sound, but don't have (or want) an installed system. With the many features of the LT-700, portable transmission has never been easier for users!
100 % Digital -- Listen receivers are digitally-tuned so transmission won't drift; assurance that when you select a channel, it stays on the channel.
Transmit up to six (6) channels simultaneously on 72 MHz, (3) three on 216 MHz.
Uses standard alkaline or NiMH batteries.
Transformer charging plug or drop in charging contacts.
Built in SmartCharge: won't allow batteries to overcharge. Charging circuitry is conveniently built into Listen's LT-700 Transmitter; never worry about unplugging a transformer at a certain time.
Mute switch.
Mic and/or line level inputs.
Limited Lifetime Warranty with hassle-free support.
Wireless Receiver Transmission - RF
Wireless - Yes
RF Frequency Range 72MHz:
72.025 - 75.975 MHz
RF Frequency Range 216MHz:
216.025 - 216.987 MHz
Number of Channels:
57
Frequency Accuracy:
.005 % stability 0 to 50 degrees C (32 to 122 degrees F)
Transmitter Stability:
50 ppm
Transmission Range:
150 (45.7) feet (m) 72 and 216MHz have the same range
Output Power 72MHZ:
8,000 uV At 3m (20mW)
Output Power 216MHz:
100 mW Maximum allowed by the FCC
Antenna:
Uses microphone cable
Compliance:
FCC Part 15, Industry Canada
Frequency Response:
50 - 15,000 Hz (+/-3dB). All system specifications are
end-to-end .
System Frequency Response 216MHz:
63- 10,000 Hz (+/-3dB). All system specifications are
end-to-end .
System Signal to Noise Ratio 72MHz:
80 dB SQ enabled, A-weighted. SQ disabled: 60dB in
72MHz and 50dB in 216MHz. All system specifications are end-to-end .
System Distortion:
<2 % Total harmonic distortion (THD) at 80% deviation. All system
specifications are end-to-end
Microphone Sensitivity:
Three position switch: high, middle and low; 6dB
increments
Line input:
-10 / +4 dBu Nominal / maximum.
Line Input Impedance:
10 k ohms
Phantom Power:
3 VDC
Set-up Controls, behind the door:
Mic sensitivity, NiMH/alkaline battery, SQ
enable/disable
User Controls:
Power, mute, channel UP and DOWN
Programming:
Unit can be programmed so that only desired channels are
displayed to the user; channel selection can be locked by holding the DOWN
button 5 seconds.
LED:
Red, illuminates when unit is on. Flashes when batteries are low,
or to indicate charging. Flashes 2x when muted