This product is available while supply lasts.

Portable Display RF Transmitter (216 MHz) (Limited Quantities)

Item:LT-700-216
Limited Quantities

The Listen LT-700 Portable 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!

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Includes

One (1) LT-700 Portable Display RF Receiver
One (1) Owner’s manual (72 MHz & 216 MHz)

Highlights

  • Superior Audio Quality – 80 dB signal-to-noise ratio, setting the industry’s sound quality standard
  • A choice between 57 channels, complete antenna and accessory options make Listen products ideal for a wide range of applications
  • Look & Listen™ LCD shows channel, battery status, and programming information
  • 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 three (3) channels simultaneously.
  • 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

Also Needed

Specs

+Audio

Frequency Response50 - 10 kHz (±3 dB)
Signal-to-Noise RatioSQ enabled: 80 dB; SQ disabled 60 dB
Distortion< 2% total harmonic distortion (THD) at 80% deviation
Microphone InputUnbalanced, tip of 3.5 mm connector, -45 dBu nominal input level, -30 dBu maximum, impedance 20k Ohms
Microphone SensitivityThree position switch: high, middle, and low; 6db increments
Microphone Power5VDC Bias
Line InputUnbalanced, ring of 3.5mm connector, -10dbu nominal input level, -3dbu maximum, impedance 10K ohms

+Controls

User ControlsPower, mute, channel UP/DOWN, Mic sensitivity, NiMH/alkaline battery, SQ enable/disable
ProgrammingChannel Lock out,Channel lock

+Indicators

LCDChannel Designation, lock status, signal strength indication, battery life, RF Power
LEDsRed, illuminated when unit is on. Flashes when batteries are low, or to indicate charging. Flashes when muted

+RF

Frequency Range216.0125 - 216.9875 MHz
Number of Channels19 wide band, 38 narrow band
Frequency Accuracy± .005% stability 32 to 122º (0 to 50ºC)
Antenna TypeMicrophone cable
Transmitter Stability50 PPM
Transmission RangeFrom 0 to 150 ft. (45.7 m)
Antenna Connector3.5 mm connector
Output PowerLess than 100mW
Number of Simultaneous Transmitters3

+Power

Power SupplyI/P 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging cases. Power supply not included (LA-208)
Power Supply Connector2.3mm OD by 0.7mm ID, barrel type connector 7.5 VDC, center positive < 250mA. Drop in contact points for use with Listen charging cases
Battery TypeTwo AA batteries, alkaline or NiMH
Battery Life15 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging TimeFully automatic, 13 hours
ComplianceRoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant

+Physical

Width3.00 in. (7.6 cm)
Height5.00 in. (13.0 cm)
Depth1.00 in. (2.5 cm)
ColorDark Grey with white silk screening
Unit Weight with Batteries5.8 oz. (164 g)
Shipping Weight1.0 lbs. (0.5 kg)
Weight3.9 oz. (111 g)
DoorManually lockable, controls accessible through doors

+Environmental

Temperature - Operation14 to 104º F (-10 to 40º C)
Temperature - Storage-4 to 122° F (-20 to 50° C)
Relative Humidity0 to 95% relative humidity, non-condensing

+Compliance

SafetyRoHS
RFFCC Part 15, Industry Canada

Accessories

FAQs

+Does the LT-700 provide phantom power?

Yes, 3VDC

+Will the LT-700 portable transmitter work for two-way communication?

No. However, Listen does recommend ListenTALK a two-way system for tour group applications where talk-back communication modes are available.

+What is the range of the LT-700 portable transmitter?

Line of site up to 150 ft. (45.7 m) for 216 MHz.

+Can I use a line source with the portable transmitter?

Yes. Listen offers the LA-263, a mic/line input cable for this use.

+How long do the batteries last on the portable transmitter?

Alkaline batteries last 15 hours; NiMH rechargeable batteries last 8 hours (72 MHz & 216 MHz).

+Can I have multiple LPT-T216 transmitters operating in one facility?

Yes. Multiple Channels and power settings enable multiple LPT-T216 transmitters to operate within the same facility even in adjacent rooms. However, when multiple transmitters are being used, they will need to transmit on different channels or have adequate distance between the transmitters so they do not interfere with each other. For further information, please refer to the quick setup guide.