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LT-700 Page 6

Listen Technologies Corporation All rights reserved 91907

Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A. 

+1.801.233.8992 • +1.800.330.0891 

North America 

 

+1.801.233.8995 

Fax

Specifications

LT-700-863

RF

RF Frequency Range

863.050 - 864.950 MHz

Number of Channels

17 Wideband

Frequency Accuracy

 +/-.005% stability 32 to 122˚ (0- 50˚C)

Transmitter Stability

50 PPM

Transmission Range

0 m (0 ft.) to 76.2 m (250 ft.)

Output Power

10mW maximum (adjustable)

Antenna

Integrated external antenna

Compliance

CE, ETSI, RoHS

** All system specifications are wireless end to end **

Audio

System Frequency Response

50Hz - 15kHz (+/-3db)

System Signal to Noise Ratio

70db (A-Weighted)

System Distortion

<2% total harmonic distortion (THD) at 80% deviation

Microphone Input

Unbalanced, tip of 3.5 mm (0.14 in.) connector, -20 dBu nominal, 

impedance 21k ohm

Microphone Sensitivity

Three position switch: high, middle, and low; 6 dB increments

Line Input

Unbalanced, ring of 3.5 mm (0.14 in.) connector, -10 dBu nominal,

 impedance 10k ohm

Microphone power

3VDC Bias

Controls

User Controls

Power, mute, channel up/down

Set-up Controls

(battery compartment)

Mic sensitivity, NiMH/alkaline battery

Programming

Channel lock out, Channel lock 

Indicators

LED

Red, illuminated when unit is on. Flashes when batteries are low, or to 

indicate charging. Flashes when muted.

Display

Channel Designation, lock status, signal strength indication, 

battery life, RF power

Power

Battery Type

Two (2) AA batteries, Alkaline or NiMH

Battery Life (Listen batteries)

10 hours alkaline (LA-361), 6 hours NiMH rechargeable (LA-362)

Battery Charging 

(NiMH only)

Fully Automatic, 13 hours

Physical

Dimensions (H x W x D)

 10.8 x 7.0 x 3.8 cm (4.25 x 2.75 x 1.50 in.)

Color

Dark Grey with white silk screening

Unit Weight

111 g (3.9 oz)

Unit Weight with batteries

164 g (5.8 oz)

Shipping Weight

453 g (1 lbs,) 

Door

Manually Lockable. Up, down, and power buttons through door. Other 

controls behind door 

Environmental

Temperature - Operation

  -10 to 40 ºC (14 to 104 ºF)

Temperature - Storage

 -20 to 50 °C (-4 to 122 °F)

Humidity

0 to 95% Relative humidity, non condensing

**Specifications are subject to change without notification

Summary of Contents for LR-500-072

Page 1: ...status The unit shall operate off of two 2 AA batter ies alkaline or NiMH The transmitter shall incorporate automatic battery charging circuitry for recharging of NiMH batteries The device shall have...

Page 2: ...selection channel lock and battery level 5 Offers 57 channels or can be programmed so that only the channels you are using are displayed 6 Easy access POWER button 7 Uses two 2 AA batteries Adjustable...

Page 3: ...Easy access mute switch 4 Look Listen LCD Display shows channel selection channel lock and battery level 5 Offers 17 channels or can be programmed so that only the channels you are using are displaye...

Page 4: ...Product Charging Carrying Case Europe LA 321 01 8 Unit Portable FM Product Charging Carrying Case North America LA 321 02 8 Unit Portable FM Product Charging Carrying Case Asia UK LA 321 03 8 Unit Po...

Page 5: ...trols User Controls Power mute channel UP DOWN Set up Controls battery compartment Mic sensitivity NiMH alkaline battery SQ enable disable Programming Channel Lockout Channel lock Indicators LED Red i...

Page 6: ...mm 0 14 in connector 10 dBu nominal impedance 10k ohm Microphone power 3VDC Bias Controls User Controls Power mute channel up down Set up Controls battery compartment Mic sensitivity NiMH alkaline ba...

Page 7: ...Hz only A Yes You can have multiple transmitters operating in one area on different channels however more than one transmitter cannot be used on the same channel Q How long do the batteries last on th...

Page 8: ...a squelch The device shall have an audio frequency response of 50 Hz to 15 KHz 3 dB at 72 MHz and 50 10 kHz 3dB at 216 MHz The device shall incorporate a stereo headset jack that allows the user to p...

Page 9: ...DYDLODEOH EURDGFDVW OVR XVHG WR DGMXVW VTXHOFK LQ VWHSV ZKLFK PXWHV DXGLR RQ ORVV RI RF signal 6 When enabled SQ provides highest audio quality available in its product category SQ can be disabled for...

Page 10: ...Display shows channel selection channel lock and battery level 6HHNV WR QG EHVW DYDLODEOH EURDGFDVW OVR XVHG WR DGMXVWDEOH VTXHOFK LQ VWHSV PXWHV DXGLR RQ ORVV RI 5 signal 6 Uses two AA batteries Sel...

Page 11: ...d Euro KDUJLQJ DUU LQJ DVHV LA 311 01 16 Unit Portable FM Product Charging Carrying Case North America LA 311 02 16 Unit Portable FM Product Charging Carrying Case Asia UK LA 311 03 16 Unit Portable F...

Page 12: ...able disable Programming Channel lock squelch Channel Lock Out Indicators LED Red illuminated when unit is on Flashes when batteries are low or to indicate charging Flashes when locked and SEEK is pus...

Page 13: ...Color Dark Grey with white silk screening Unit Weight 3 9 oz 111 g Unit Weight with batteries 5 8 oz 164 g Shipping Weight 1 0 lbs 0 45 kg Door Manually lockable Up down and power buttons through door...

Page 14: ...s you need Q How many receivers can I have in a system A As many as you need the number is endless UHTXHQWO VNHG 4XHVWLRQV Q What is the function of SQ A To reduce noise of its systems Listen now offe...

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