| General
Information |
| Manufacturer
|
Listen Technologies |
| Manufacturer Part
Number |
LS-08-072-01
|
| Product Name
|
Advanced Portable RF System For
15-Person, 72 MHz
|
| Overview |
The 72 MHz
15-Person Advanced Portable RF System from Listen
Technologies is a complete assistive listening system
designed for group applications, such as with tour guides
or language interpretation. It includes one Listen
Technologies Portable Display RF Transmitter, one
Behind-the-Head Microphone, fifteen Portable Programmable
Display RF Receivers, fifteen Ear Speakers, one 16-unit
Portable RF Product Charging/Carrying Case, and thirty-two
Rechargeable AA NiMH batteries
LT-700 Portable Display RF Transmitter (72 MHz)
The 72 MHz Listen Technologies LT-700 Portable Display
RF 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-700-072 is suitable 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. The many features of the LT-700
have made portable transmission considerably easier
This product is approved by the FCC for use in the US.
Please note that it 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
- A potent 80 dB
signal-to-noise ratio
- A choice between 57
channels, with complete antenna and accessory options
makes the LT-700-72 MHz suitable for a wide range of
applications
- Look and Listen LCD
shows channel, battery status, and programming
information
- 100 percent 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 six (6)
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
LA-278 Behind-the-Head
Microphone
The LA-278 Behind-the-Head Microphone from Listen
Technologies is compatible with the LT-700 Portable
Transmitter. The directional microphone is designed to
cancel ambient noise and fits securely over your ears and
around the back of your neck. It also features an antenna
for the transmitter in the microphone cord
- Directional microphone
- Ideal for use when
unobtrusive placement and high performance are
critical
- Designed to cancel
ambient noise
- Fits securely over ears
and around the back of the neck
- The transmitter antenna
is built into the microphone cord
Portable Programmable
Display RF Receiver (72 MHz)
The Portable Programmable Display RF Receiver from Listen
Technologies is a 72 MHz receiver. It can receive up to 57
channels and has a Look & Listen LCD Display that
shows programming status, channel, lock, battery level,
and RF signal strength. Channel selector buttons are
located on the front of the unit. It has channel SEEK
capability and is compatible with mono or stereo headsets.
It takes AA batteries (alkaline or NiMH rechargeable).
SmartCharge capabilities prevent overcharging
- 80 dB signal-to-noise
ratio (SNR)
- 57 channels
- Unneeded channels can be
locked so this receiver will access only one or more
channels of your choice
- Receiver is
digitally-tuned so the transmission won't drift
- Uses standard alkaline
or nickel-metal hydride (NiMH) batteries
- Built in SmartCharge
won't allow batteries to overcharge
- Transformer charging
plug
LA-164 Ear Speaker
The LA-164 Ear Speaker from Listen Technologies is
designed to fit easily over your ear. It's constructed of
hard plastic, making it easy to clean. The earpiece can be
used at venues where it can be continuously cleaned and
re-used, or with hearing aids
- Easily cleaned
- Single ear clip does not
mess up hair
- Strong volume output
- The receiver's antenna
is built into the headphone cord
LA-311-01 16-Unit Portable
RF Product Charging/Carrying Case (Gray)
The grey LA-311-01 16-Unit Portable RF Product
Charging/Carrying Case from Listen Technologies is
compatible with the company's LT-700, LR-200, LR-300 and
LR-500 series products. It is designed with 16 separate
slots for storing and charging your RF devices, as well as
individual earphone slots to prevent cable tangling. A
power cable connects the case to a standard electrical
outlet, and the units will automatically turn off once
they are fully charged. There is a large pocket for
storing the power supply, headsets, and any additional
accessories. Durable latches with included keys allow you
to lock the case for additional security. The case can be
carried using the metal handle or by using the included
detachable shoulder strap
- Sturdy case with hard
foam interior and durable latches
- Stores up to 16
receivers and portable transmitters
- Large and small
pocketets store earphones and other accessories
- Earphones can remain
attached to receivers during storage
- Case comes with keys and
can be locked for security
- Detachable nylon
carrying strap
LA-362 Rechargeable AA NiMH
Batteries (Pack of 2)
The pack of two LA-362 Rechargeable AA NiMH Batteries
from Listen Technologies are designed to be recharged many
times. They can be used with the company's charging cases,
belt pack devices, and LR-600 Wireless Speaker/Receiver.
The batteries provide 1.2V of power and have a 2300 mA
capacity
- Can be recharged many
times
- Standard size AA
batteries
- Longer life then NiCad
- Package of 2
|
| Features |
|
Designed for
organizations and venues where multiple tours or
simultaneous language interpretation is needed, the
LS-08 15-Person Advances Tour Group RF System is the
perfect choice
These products are
approved by the FCC for use in the US
In addition to the
portable transmitter, microphone, and
charging/carrying case, the LS-08 includes 15
programmable display receivers that can be set to
exclude or include specific broadcast channels
depending on your venue's needs
The ability to program
channels makes the LS-08 a perfect solution for any
space where multiple audio streams need to be
transmitted at the same time
Additional receivers can
be added as well, allowing you to expand the system to
meet growing demand
With a 100 percent
digital signal for outstanding clarity and
consistency, SmartCharge (TM) battery technology, and
more, the LS-08 is an industry-leading system to bring
assistive listening to your clients and customers
immediately
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
FCC rules limit the use
of this product to assistive listening
|
| Specification |
In The Box
|
Bundle Items
LT-700 Portable Display RF Transmitter (72 MHz)
LA-278 Behind-the-Head Microphone
15 x Portable Programmable Display RF Receiver (72 MHz)
15 x LA-164 Ear Speaker
LA-311-01 16-Unit Portable RF Product Charging/Carrying
Case (Gray)
Set of Keys
Shoulder Strap
Power Supply
16 x LA-362 Rechargeable AA NiMH Batteries (Pack of 2) |
LT-700 Portable Display RF Transmitter (72 MHz)
|
Audio
|
Frequency
Response +/- 3 dB
|
50 to 15 kHz
|
Signal-to-Noise
Ratio
|
SQ Enabled:
80 dB
SQ disabled: 60 dB
|
Distortion
|
Less than 2
percent harmonic distortion (THD) at 80 percent deviation
|
Microphone
Sensitivity
|
Three
Position Switch: high, middle and low
6 dB increments
|
Line Input
|
Unbalaanced,
ring of 3.5 mm connector, - 10 dBu nominal input level, -3
dBu maximum impedance 10 kOhms
|
Micophone
Input
|
Unbalanced,
tip of 3.5 mm connector, -45 dBu nominal input level, -30
dBu Maximum, Impedance 20 kOhms
|
Control/Indicators
|
Use
Controls
|
Power
Mute
Channel UP/Down
Mic sensivity
NiMH/Alkaline battery
SQ enable/disable
Programming:
Channel lock out
Channel lock
|
Indicators
|
LEDs:
Red, illuminated when unit is on Flashes when batteries
are low, or to indicate charging
Flashes when muted
LCD:
Channel designation
Lock status
Signal strength indication
Battery life
RF power
|
RF
Specification
|
Frequency
Range
|
72025 to 75950
mHz
|
Supported
Transmitters
|
6 |
Frequency
Accuracy
|
=/- 0.005
percent stability 32 to 122 degrees fahrenheit
|
Transmission
Stability
|
50 PPM
|
Transmission
Range
|
From 0 to 150'
|
Output
Power
|
Less than 10
mW
|
Antenna
Type
|
Microphone
Cable
|
Antenna
Connector
|
3.5 mm
|
Power
|
Battery
Type
|
2 x 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
|
Power
Supply
|
I/P 120VAC
O/P 7.5VDC 250 mA
Drop in Contact points for use with charging cases
Power supply optional, not included (LA-208)
|
Power
Supply Connector
|
2.3 mm OD by
0.7 mm ID, barrel type connector 7.5 VDC, center positive
less than 250 mA
Drop in contact points for use with listen charging cases
|
Compliance
|
RoHS, WEEE,
UL, PSE, CE, CUL, TUV, CB compliant
RF: FCC Part 15, industry Canada
Safety: RoHS
|
Physical
and Environmental
|
Temperature
(Operating)
|
14 to 104
Degrees Fahrenheit
-10 to 40 Degrees Celsius
|
Storage
Temperature
|
-4 to 122
Degrees Fahrenheit
-20 to 122 Degrees Celsius
|
Relative
Humidity
|
0 to 95
percent relative humidity, non-condensing
|
Color
|
Dark gray with
white silk screening
|
Door Type
|
Manually
lockable, control accessible through doors
|
Component
Dimensions and Weights
|
Dimensions: 5"
x 3" x 1"
Unit Weight With Batteries: 5.8 oz
|
LA-278
Behind-the-Head Microphone
|
Compatibility
|
Listen
Technologies LT-700 Portable Transmitter
|
Frequency
Response
|
300 Hz to 10
kHz
|
Impedance
|
1 kOhm
|
Phantom
Power
|
3 VDC required
|
Connections
|
1 x 3.5 mm
|
Approvals
And Compliance
|
RoHS |
Cable
Length
|
55.0" |
Weight
|
2.0 oz
|
Portable
Programmable Display RF Receiver (72 mHz)
|
RF
Specification
|
RF
Frequency Range
|
72.025 to
75.95 mHz
|
Number of
Channels
|
17 wide band,
40 narrow band
|
Sensivity
|
0.6 microvolts
typical, 1 microvolts maximum for 12 dB SINAD
|
Frequency
Accuracy
|
+/- 0.005
percent stability +32 to 122 degrees fanrenheit
|
Antenna
Type
|
Uses earphone
cable
|
Squelch
|
Programmable
in 20 steps, automatic on loss of RF signal
|
Audio
|
Frequency
Response
|
System:
50 Hz to 15 kHz (+/- 3 dB)
|
Signal to
Noise Ratio
|
SQ Enabled:
80 dB
SQ Disabled: 60 dB
|
System
Distortion
|
Less than 2
percent total harmonic distortion (THD) at 80 percent
deviation
|
Audio
Output Jack
|
3.5 mm
connectors, unbalanced, 0 dBu nominal output level, 16 mW
maximum, 32 Ohms
|
Control
|
User
Controls
|
Channel
up/down, SEEK, volume, SQ enable/disable
|
Programming
|
Channel lock,
squelch, channel lock out
|
Indicators
|
LEDs
|
Red,
illuminated when unit is on, flashes when batteries are
low or to indicate charging, flashes when locked and SEEK
is pushed |
LCD
|
Channel
Designation, lock status, signal strength indication,
programming |
Power
|
Battery
Type
|
2 x AA batteries,
alkaline or NiMH
|
Battery
Life
|
30 hours
alkaline, 15 hours NiMH rechargeable
|
Battery
Charging Time
|
Fully
Automatic, 13 hours
|
Power
Supply
|
I/P 120 VAC,
O/P 7.5 VDC 250 mA, drop in contact points for use with
charging cases
|
Power
Supply Connector
|
0.09 OD by
0.02" ID (2.3 OD by 0.7 mm ID}, barrel type connector 7.5
VDC, center positive less than 250 mA, drop in contact
points for use with Listen charging cases |
Compliance
|
RoHS, WEEE,
UL, PSE, CE, CUL, TUV, CB compliant |
Enviromental
|
Operation
Temperature
|
14 to 104
degrees fahrenheit
|
Storage
Temperature
|
-4 to 122
degrees fahrenheit
|
Humidity
(Non-Condensing)
|
0 to 95
percent relative humidity
|
Compliance and Approvals
|
RF
|
FCC Part 15,
Industry Canada
|
Physical
|
Colort
|
Dark gray with
white silk screening
|
Doors
|
Manually
lockable, up, down, and power buttons through door, and
other controls behind door |
Dimensions
|
3" x 5" x 1" |
Weigh
|
Unit: 3.9
oz
Unit with Batteries: 5.8 oz
|
LA-164 Ear Speaker
|
Connections
|
1 x 3.5 mm
Stereo
|
Frequency
Response
|
20 Hz to 20
kHz
|
Impedance
|
32 Ohms +/- 15
percent at 1 kHz
|
Input
Sensitivity
|
Headset:
115 dB +/- 4 dB at 1 kHz, 1 mW
|
Power Input
|
Rated:
50 mW
Maximum: 100 mW
|
Approvals
and Compliance
|
Rohs |
Cable
Length
|
36.0" |
Weight
|
4.0 oz
|
LA-311-01 16-Unit Portable RF Product
Charging/Carrying Case (Gray)
|
Compatibility
|
Listen
Technologies LT-700, LR-200, LR-300, LR-400, LR-500
NiMH batteries |
Capacity
|
16 Units
|
Power
Supply Input
|
100 to 240 V
50 to 60 Hz
1200 mA
|
Power
Supply Output
|
7.5 V
4 A
30 W
|
Approvals
and Compliance
|
Power
Supply Compliance: UL, CE, GS, TUV, RoHS
Safety: RoHS
|
Material
|
Exterior:
Hard case
Interior: Foam
Carrying Strap: Nylon
|
Power Cord
Length
|
12.0' |
Dimensions
|
7.0" x 18.5" x
13.8"
Shoulder Strap Length: adjustable 33.0" to 53.0" |
Weight
|
7.6 lbs
|
LA-362 Rechargeable AA NiMH Batteries (Pack of
2)
|
Packaged
Quantity
|
2 |
Battery
Size
|
AA |
Classification
|
NiMH |
Nominal
Voltage
|
1.2 VDC
|
Battery
Capacity
|
2300 mA
|
Operating
Temperature
|
0 to 131
degrees Fahrenheit
|
Weight
|
1.1 oz
|
Weight
and Dimensions
|
Weight
|
20 lbs
|
