The gray LA-140 Stationary IR Radiator from Listen Technologies is designed for use with the LT-82 transmitter and allows you expand your assisted listening system's infrared coverage. Each LA-140 covers up to 10,000 ft², and two units can be powered directly from the transmitter. The unit can also be powered from an LA-205 power supply (available separately).

The radiator is easy to install and hardware is included for mounting the unit to a wall, ceiling, desk, mic stand, or tripod. Power is supplied through Cat 5 cabling, with standard coaxial cabling for the RF signal. Two LA-140 units can be mounted together horizontally or vertically, doubling the power of your system without taking up an excessive amount of space. Built-in delay compensation allows you to make adjustments when using multiple LA-140 units together to prevent phasing problems and signal cancellation.

Expands Infrared Coverage Area    For Use with LT-82 IR Transmitter    Covers up to 10,000 ft²    Mounting Hardware Included    One LT-82 Can Drive Two LA-140 Units

Covers up to 10,000 ft² / 929 m²

Powered by LT-82 transmitter or LA-205 power supply (both available separately)

Two radiators can be powered from a single transmitter or power supply, eliminating the need for multiple cables

Two units can be horizontally or vertically mounted together, doubling the power in a small footprint

Mounting brackets and hardware are included for a variety of mounting options, including wall, ceiling, mic stand, and tripod mounting

Radiator diodes are automatically turned off if no audio signal is present at the transmitter after 30 minutes, saving radiator diode life

Delay compensation ensures there is no drop out in the IR signal

Related Questions and Answers

Q: 1. under optimal conditions, what is the range?

A: Under optimal conditions, you can get up to 1,000 ft of coverage with this transmitter and our LA-122 antenna. Different antenna's can have different coverage area's, with LA-122 giving the most. If you are looking for more coverage, I would recommend our 216 MHz system which can give up to 3,000 ft of coverage. Thank you.

Q: 2. Does this set have multiple channels?

A: The Listen Technologies ListenTALK GR16 Wireless Communication System (1920 to 1930 MHz), BH # LILKS9A1, operates in a frequency range of 1920 to 1930 MHz. Separate groups can be created. Think of the separate groups as separate channels.

Q: 3. This is confusing. The LT has several transmitters e.g. 72Mhz and 216Mhz for example. I thought for the receivers to work they must tune or be set to match this frequency band. Or is the ListenTALK LKR-12 an FM band receiver?

A: The Listen Technologies ListenTALK LKR-12 Basic Receiver with Li-Ion Battery, Lanyard & Ear Speaker BH #LILKR12A0 operates on 1920 to 1930 MHz (North America). The North American DECT band, is sometimes called 1.9 GHz, and properly called the 1920-1930 MHz UPCS band.

Q: 4. Why are there two channels? Two channels of audio? There really isn't much info from LT. Why not post a copy of the manual or other documentation as other suppliers offer.

A: The Listen Technologies LW-100P-02 Listen Everywhere 2-Channel Wi-Fi Server BH #LILW100P0201is for those applications that only require two channels. Use this model: Listen Technologies Listen Everywhere 4-Channel Server B&H # LILW200P0401: https://bhpho.to/2NMErTj: if more than two channels are needed. The Listen EVERYWHERE LW-100P-02 is an affordable and reliable way to deliver 2 channels of audio to audiences of up to 1000 users. Connect to your existing Wi-Fi network and stream low latency audio directly to guests’ devices using the free mobile app, or by providing Wi-Fi Audio Receivers at your venue to meet ADA compliance. Cloud-based management allows for simple management of the server and listening devices, including supporting custom welcome message videos or logos, sliding banners, and more, all providing another point of contact with your clients and customers. Experience great quality audio and industry leading low latency audio at your venue with a 2 channel Wi-Fi Audio Server. https://bit.ly/3v2GQPB Mark

Q: 5. What are the advantages/disadvantages of using the 216mhz vs 72

A: The 216 MHz system would be great for large coverage areas. With the right antenna they can reach up to about 3,000 ft line-of-sight. You would only be able to have about 3 transmitters in the same area using 216 MHz, though. 72 MHz has a smaller range of about 1,000 ft line-of-sight, but you would be able to have about 7-8 transmitters in the same area. This tends to be the more popular frequency, as well.

Q: 6. Can this system be used as a FM transmitter to the FM radios in cars?

A: This would not work for as FM transmitter to a car radio as it doesn't run on the same frequencies and would need a compatible receiver to get a signal.

Q: 7. Does each Receiver come Does each Receiver come with an earpiece or headphones?

A: Earpieces are not included with the Listen Technologies ListenTALK GR16 Wireless Communication System (1920 to 1930 MHz).

Q: 8. Will this work for people that have hearing aids/cochlear implants?

A: The Listen Technologies Listen Everywhere 4-Channel Server BH #LILW200P0401 can work with these devices as the listener connects via a mobile app on their phones. If the listener can use headphones then they are all set.

Q: 9. What are the advantages of the Dante equipped server?

A: The Listen Technologies Listen Everywhere 2 Channel Wi-Fi Audio Server (Dante) BH #LILW150P021D is an affordable way to deliver 2 Dante® audio channels to audiences of up to 1000 users. The rear panel Dante input allows for easy audio routing and management via Dante Controller® software. Simply connect to your existing Wi-Fi network and stream low latency audio directly to guest’s devices using the free mobile app, or by providing Wi-Fi Audio Receivers at your venue to meet ADA compliance. Cloud-based management allows for simple management of the server and listening devices, including supporting custom welcome message videos or logos, sliding banners, and more, all providing another point of contact with your clients and customers. Experience great quality audio and industry leading low latency audio at your venue with a Dante enabled 2 channel Wi-Fi Audio Server.

Q: 10. How low latency is it? Does it use our Wi-Fi network? If so, we have stellar speeds. If not, I'd be concerned about distance.

A: The Listen Technologies LW-100P-02 Listen Everywhere 2-Channel Wi-Fi Server (BH # LILW100P0201) has virtually no discernable audio latency. It connects to your internet router/modem (network) via an Ethernet cable.