This product is discontinued and the information here is only for reference.

Portable Programable Display RF Transmitter (72 MHz)

Portable Display RF Transmitter (72 MHz) (Discontinued)

Name: Portable Display RF Transmitter (72 MHz) (Discontinued)
SKU: LT-700-072
Price: 681.48 USD
Availability: OutOfStock

Item:LT-700-072

Discontinued

Designed for a variety of portable assistive listening applications, the LT-700 Portable Display RF Transmitter delivers the highest level of performance for all needs. Whether transmitting voice or music, the LT-700 offers a clear, reliable signal for use in environments without an installed assistive listening system. Wireless audio is easily and clearly picked up by any of our Listen Portable receivers, allowing you to meet your needs easily and effectively. From outdoor events to classrooms, factory tours to training spaces and more, the LT-700 is the ideal portable transmitter for nearly any setting.

This product is approved by the FCC for use in the US. Please note that they cannot be used in all countries. Check with your local government or specific regulation with regard to broadcast frequency in your specific country. Note: FCC rules limit the use of this product to assistive listening.

Download Product Data Sheet

See Architectural & Engineering Specs

This product is available through authorized resellers.

Includes

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

Highlights

Transmits up to six (6) channels of audio simultaneously on the 72 MHz band
Offers a choice between 57 different channels for flexibility and ease of setup
80 dB signal-to-noise ratio provides superior audio quality
100% digital signal output ensures a reliable connection to any and all receivers in use
Compatible with standard AA alkaline and NiMh rechargeable batteries
Easy-to-read Look & Listen (TM) LCD display with battery level, selected channel, and programming information
Built-in SmartCharge (TM) prevents batteries from overcharging Mic and/or line-level inputs
Mute switch

Also Needed

Lavalier Microphone

SKU: LA-261

Conference Microphone

SKU: LA-277

Portable Programable Display RF Receiver (72 MHz)

Portable Programmable Display RF Receiver (72 MHz) (Limited Quantities)

SKU: LR-500-072

Product image of a Radio Frequency Receiver

Intelligent DSP RF Receiver (72 MHz)

SKU: LR-4200-072

One RF Receiver with a neck loop and ear bud plugged in.

Intelligent DSP RF Receiver Package 1 (72 MHz)

SKU: LR-4200-072-P1

Intelligent DSP RF Receiver 6-Pack (72 MHz)

SKU: LP-40-072-01

Intelligent DSP RF Receiver 12-Pack (72 MHz)

SKU: LP-41-072-01

Black LR5200 intelligent digital signal processing 72 MHz radio frequency receiver with the word chapel showing as the name of the channel.

Advanced Intelligent DSP RF Receiver (72 MHz)

SKU: LR-5200-072

One RF receiver with an attached neck loop and an attached ear bud.

Advanced Intelligent DSP RF Receiver Package 1 (72 MHz)

SKU: LR-5200-072-P1

RF Advanced Intelligent DSP Receiver 6-Pack

Advanced Intelligent DSP RF Receiver 6-Pack (72 MHz)

SKU: LP-50-072-01

RF Advanced Intelligent DSP Receiver 12-Pack

Advanced Intelligent DSP RF Receiver 12-Pack (72 MHz)

SKU: LP-51-072-01

Specs

+Audio

Frequency Response	50 Hz - 15 kHz (±3 dB)
Signal-to-Noise Ratio	SQ enabled: 80dB; SQ disabled 60dB
Distortion	< 2% total harmonic distortion (THD) at 80% deviation
Microphone Input	Unbalanced, tip of 3.5 mm connector, -45 dBu nominal input level, -30 dBu maximum, impedance 20k Ohms
Microphone Sensitivity	Three position switch: high, middle, and low; 6db increments
Microphone Power	5VDC Bias
Line Input	Unbalanced, ring of 3.5mm connector, -10 dbu nominal input level, -3 dbu maximum, impedance 10K ohms

+Controls

User Controls	Power, mute, channel UP/DOWN, Mic sensitivity, NiMH/alkaline battery, SQ enable/disable
Programming	Channel Lock out,Channel lock

+Indicators

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

+RF

Frequency Range	72.025 - 75.950 MHz
Number of Channels	17 wide band, 40 narrow band
Frequency Accuracy	± .005% stability 32 to 122º (0 to 50ºC)
Antenna Type	Microphone cable
Transmitter Stability	50 PPM
Transmission Range	From 0 to 150 ft. (45.7 m)
Antenna Connector	3.5 mm connector
Output Power	Less than 10mW
Number of Simultaneous Transmitters	6

+Power

Power Supply	I/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 Connector	2.3mm 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 Type	Two AA batteries, alkaline or NiMH
Battery Life	15 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging Time	Fully automatic, 13 hours
Compliance	RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant

+Physical

Width	3.00 in. (7.6 cm)
Height	5.00 in. (13.0 cm)
Depth	1.00 in. (2.5 cm)
Color	Dark Grey with white silk screening
Unit Weight with Batteries	5.8 oz. (164 g)
Shipping Weight	1.0 lbs. (0.5 kg)
Weight	3.9 oz. (111 g)
Door	Manually lockable, controls accessible through doors

+Environmental

Temperature - Operation	14 to 104º F (-10 to 40º C)
Temperature - Storage	-4 to 122° F (-20 to 50° C)
Relative Humidity	0 to 95% relative humidity, non-condensing

+Compliance

RF	FCC Part 15, Industry Canada

Accessories

A picture of two (2) High Capacity AA Alkaline Batteries.

High Capacity AA Alkaline Batteries (2)

SKU: LA-361

Two batteries - one black that reads Commercial Grade NiMH Rechargeable AA Battery in white lettering, and blue one that says Listen

Rechargeable AA NiMH Batteries (2)

SKU: LA-362

A picture of a Listen soft carrying case.

Soft Case (Limited Quantities)

SKU: LA-306

16-Unit Portable RF Product Charging/Carrying Case (Limited Quantities)

SKU: LA-311

16-Unit Portable RF Product Carrying Case (Limited Quantities)

SKU: LA-313

4-Unit Portable RF Product Charging/Carrying Case (Limited Quantities)

SKU: LA-317

4-Unit Portable RF Product Carrying Case (Limited Quantities)

SKU: LA-318

Protective pouch shown with an RF Receiver inside

Protective Pouch for Portable RF Products (Limited Quantities)

SKU: LA-319

Configurable Carrying Case

SKU: LA-320

Open hard shell travel case with portable radio frequency receivers.

8-Unit Portable RF Product Carrying Case (Limited Quantities)

SKU: LA-322

Assistive Listening Notification Signage Kit

SKU: LA-304

Line/Mic Y Input Cable for LT-700 (Limited Quantities)

SKU: LA-263

How-To's

Quick Start Guides:

DOWNLOAD: LT-700-072 Portable RF Transmitter Quick Reference Card

User Manuals:

DOWNLOAD: LT-700-072 Portable RF Transmitter Manual

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.