Stationary RF Transmitter (72 MHz)

Name: Stationary RF Transmitter (72 MHz)
SKU: LT-800-072-01-parent
Availability: InStock

Item:LT-800-072-01

Offering outstanding audio clarity and 57 selectable channels, the LT-800 is a perfect RF transmitter choice for a wide range of applications. Connected to your main audio system, the LT-800 broadcasts strong, reliable audio to both belt pack receivers and stationary receivers, ideal for providing listeners with the best possible assistive listening experience. Antenna not included.

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This product is available through authorized resellers.

Includes

One (1) LT-800 Stationary RF Transmitter (72 MHz)
One (1) LA-207 Power Supply for LT-800
One (1) Quick reference card

Highlights

Look & Listen (TM) LCD display for quick channel, programming, and channel lock status information
Balanced and unbalanced audio inputs allow for use with any audio source
Built-in auto processor optimizes audio (voice or music) prior to transmission
57 available, selectable channels
VU level meter and test tone for simple installation and set up
30-day, no-obligation demonstration available for your venue or business

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SKU: LA-125

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Specs

+Audio

Frequency Response	50 Hz - 15 kHz (±3 dB)
Signal-to-Noise Ratio	SQ enabled 80 dB, SQ disabled 60 dB
Audio Input 1	Rear panel, one (1) Female XLR or 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, +21 / -30 dBu (line/mic) maximum input level, impedance 20k / 1k ohm (line/mic), phantom power +12 VDC
Audio Input 2	Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k ohm
Audio Processing	Compression can be turned on/off, slope internally adjustable from 1:1 to 4:1, default 2:1
Contour	Cuts and boosts frequencies above 5 kHz
Distortion	< 2% total harmonic distortion (THD) at 80% deviation
Audio Output	Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level, +15 dBu maximum, impedance 10 ohm
Headphone Output	Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm

+Controls

User Controls	Front Panel: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume controlRear Panel: Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (-10 / +10 dBu), RF power level (low, mid, high)
Internal Adjustments	Compression ratio for audio processor
Programming	SQ on/off, process on/off, channel lock

+Indicators

LCD	Channel designation, lock status, RF power level, programming (front panel)
Audio Input Status LEDs	Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)
Processing	Indicated by a green LED when on (front panel)
Test Tone	Red LED illuminates when test tone is enabled.
RF Power	Indicated on the LCD (low, mid, high)

+RF

Frequency Range	72.025 - 75.950 MHz
Number of Channels	17 wide band, 40 narrow band
Frequency Accuracy	± .005% stability +32º to +122 ºF (0º to +50 ºC)
Antenna Type	Various antennas available
Transmitter Stability	50 PPM
Transmission Range	Up to 305 m (1,000 ft.)
Antenna Connector	BNC, 50 Ohms (Use RG-58 < 100 ft or RG-8 > 100ft)
Output Power	80,000 uV at 3 m
Number of Simultaneous Transmitters	Up to 8

+Power

Power Supply	In line power supply, Listen part number LA-207 (Line cord is determined by the each Country's AC power standards)
Power Supply Input	100-240 VAC, 50-60 Hz, 0.4 A
Power Supply Output	12 VDC, 1.3 A, 15.6 W
Power Supply Connector	0.02 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
Compliance	UL, CE, GS, TÜV, RoHS

+Physical

Width	21.5 cm (8.50 in.)
Height	4.5 cm (1.75 in.)
Depth	23 cm (9.13 in.)
Color	Black with grey silk screening
Unit Weight with Power Supply	1.6 kg (3.5 lbs.)
Shipping Weight	2.7 kg (6.0 lbs.)
Rack Mounting	One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space, optional rack mount (LA-326)
Weight	1.2 kg (2.6 lbs.)

+Environmental

Temperature - Operation	-10 ºC (14 ºF) to +40 ºC (104 ºF)
Temperature - Storage	-20 ºC (-4 ºF) to +50 ºC (122 ºF)
Relative Humidity	0 to 95% relative humidity, non condensing

+Compliance

Safety	RoHS
RF	FCC Part 15, Part 90, Industry Canada

Accessories

RG-58 50 Ohm Coaxial Cable measured and cut by the foot

RG-58 50 Ohm Coaxial Cable (500 ft)

SKU: LA-112-500

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RG-8 50 Ohm Low-Loss Coaxial Cable (500 ft)

SKU: LA-113-500

RG-58 BNC Connector

SKU: LA-127

RG-8 BNC Connector

SKU: LA-128

RG-58 50 Ohm Preassembled Coaxial Cable

SKU: LA-391

RG-8 50 Ohm Preassembled Coaxial Cable

SKU: LA-390

2-Way RF Antenna Combiner

SKU: LA-80

4-Way RF Antenna Combiner

SKU: LA-81

6-Way RF Antenna Combiner

SKU: LA-82

12 VDC Replacement Power Supply for LT-800

SKU: LA-207

BNC Coupler

SKU: LA-115

How-To's

FAQs

+Can this transmitter be powered with a DC voltage?

Yes. The transmitter must use the supplied 12 VDC power supply.

+The signal being transmitted is inconsistent, my receiver cuts in and out.

The receiver may be out of range of the transmitter.

+I can't change the channel on my transmitter, help?

The unit is locked on a channel. To unlock, hold the channel select "Up" for 3 seconds. The padlock icon will extinguish from the LCD display.

+I can't access the narrowband channels on my transmitter, help?

The transmitter is in "Basic mode" and all narrowband channels are locked out. To enter "Expanded mode" and transmit on a narrowband channel, hold the channel select "Down" button while turning on the unit.

+My transmitter seems to have lost power/range.

Make sure that the antenna is connected properly. Make sure that the RF power switch is in the correct position. A more efficient transmit antenna may be needed.

+How many RF transmitters can I have operating simultaneously?

72 MHz: 8 simultaneous transmissions

+What does the LT-800 Transmitter "contour" knob do?

The contour knob boosts or cuts frequencies above 5kHz. It is recommended that this knob be turned counterclockwise for voice and clockwise for music.

+What does the LT-800 Transmitter "process" feature do? When should I use it?

The process feature is a type of Automatic Gain Control. If your input signals to the transmitter are inconsistent in level and you wish to have gain control, then this should be turned on.

+Where should I have the input level switches positioned on the back of my transmitter?

Depends on the level of audio being input. When using Input 1: • MIC position: For a microphone or MIC level input of -55dbu. • MIC Phantom Power: For a condenser microphone that needs a 12VDC phantom power supply at a -55dbu level input. When using Input 2: • +10dbu/SPKR position: When connecting a speaker or any other higher line level audio input. • -10dbu/Line position: When connecting a regular line level input of -10dbu

+Can I use the LT-800 transmitter with other manufacturer's receivers?

YES. Please refer to the frequency compatibility charts in the manual or on the website for channel conversions. When using other manufacturers products, SQ (Super Quiet) must be turned OFF.

+What channels should I be transmitting on?

It is recommended that wideband channels are used for best audio quality. If transmitting multiple simultaneous channels, narrowband frequencies may be required.

+Is there a limit to the number of transmitters I can use in one room?

Yes. The 72 MHz LT-800-072 has a maximum of (8) eight.

+Does the LT-800 include the rack mount?

No, but an LA-326 Universal Rack Mounting Kit is available for purchase.

+Do I need a transmitter for each audio source?

Each audio source requires a transmitter.

+How many receivers can I have on a system?

As many as you want. The transmitter simply transmits a signal and you can have as many receivers pick that signal up as necessary. It's like a radio station transmitting and the receivers are the radios tuning into the "channel".

+What is the range of the LT-800 transmitter?

Depends on the following:

The frequency of the transmitter.
The transmitter's location.
The antenna being used on the transmitter and receiver.
The location of the remote antenna (if applicable). In general, the higher the antenna the more range.
The length of coaxial cable ran to the antenna from the transmitter (if applicable). Every foot of cable creates a power loss.
The RF power setting on the transmitter.
The objects between the transmitter and receiver. All material, especially metal, will weaken the signal strength.
When using 72 MHz, a direct line of sight distance of 305 m (1000 ft.) from the transmitter can be achieved.

+What type of microphones can I use with the LT-800 transmitter?

Dynamic microphones can be used when the Input 1 level select switch is in the "MIC" position.Condenser microphones can be used when the Input 1 level select switch is in the "MIC + Phantom Power" position.