|
Listen
Technologies LT-700-072KR Portable Display RF Transmitter,
72MHz, S.Korea; Offers a choice between 57 different channels
for flexibility and ease of setup; 80 dB signal-to-noise ratio
provides superior audio quality; 100 percent 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 and Listen LCD display with battery
level, selected channel, and programming information; Built-in
SmartCharge prevents batteries from overcharging Mic and/or
line-level inputs; Mute switch; The portable RF display
transmitter shall be capable of broadcasting on 57 channels; The
unit shall incorporate a microphone sensitivity switch; The
device shall broadcast on both wide and narrow band channels
with a SNR of 80 dB or greater; The device shall have an audio
frequency response of 50 Hz to 15 KHz, +/- 3 dB at 72 MHz, or of
50 Hz to 10 kHz, +/- 3 dB at 216 MHz; The device will
incorporate a mute switch; The battery door shall be capable of
being mechanically locked; The device shall incorporate an LCD
display that indicates channel, battery level, low battery,
battery charging, and RF signal strength; The portable
transmitter shall incorporate automatic battery charging
circuitry for recharging of NiMH batteries, with the ability to
charge via a wall transformer or drop in charging case; The
Listen LT-700-072 or LT-700-216 is specified; Dimensions 3" x 5"
x 1"; Weight 1 lbs
| General
Information |
| Manufacturer
|
Listen Technologies |
| Manufacturer Part
Number |
LT-700-072KR
|
| Product Name
|
Portable Display RF Transmitter,
72MHz, S.Korea
|
| Overview |
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 |
| Features |
|
Offers a choice between
57 different channels for flexibility and ease of
setup
80 dB signal-to-noise
ratio provides superior audio quality
100 percent 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 and
Listen LCD display with battery level, selected
channel, and programming information
Built-in SmartCharge
prevents batteries from overcharging Mic and/or
line-level inputs
Mute switch\The portable
RF display transmitter shall be capable of
broadcasting on 57 channels
The unit shall
incorporate a microphone sensitivity switch
The device shall
broadcast on both wide and narrow band channels with a
SNR of 80 dB or greater
The device shall have an
audio frequency response of 50 Hz to 15 KHz, +/- 3 dB
at 72 MHz, or of 50 Hz to 10 kHz, +/- 3 dB at 216 MHz
The device will
incorporate a mute switch
The battery door shall
be capable of being mechanically locked
The device shall
incorporate an LCD display that indicates channel,
battery level, low battery, battery charging, and RF
signal strength
The portable transmitter
shall incorporate automatic battery charging circuitry
for recharging of NiMH batteries, with the ability to
charge via a wall transformer or drop in charging case
The Listen LT-700-072 or
LT-700-216 is specified
|
| Specification |
Includes
|
One LT-700 Portable Display RF
Transmitter
One Owner's manual (72 MHz) |
Audio
|
Frequency Response
|
50 Hz - 15 kHz (+/- 3 dB)
|
Signal-to-Noise Ratio
|
SQ Enabled: 80 dB
SQ Disabled: 60 dB
|
Distortion
|
Less 2 percent total harmonic
distortion (THD) at 80 percent deviation
|
Microphone Input
|
Unbalanced, tip of 3.5 mm
connector, -45 dBu nominal input level, -30 dBu maximum,
impedance 20 kOhms
|
Microphone Sensitivity
|
Three position switch:
High, middle, and low, 6 dB increments
|
Microphone Power
|
5 VDC Bias
|
Line Input
|
Unbalanced, ring of 3.5 mm
connector, -10 dBu nominal input level, -3 dBu maximum,
impedance 10 kOhms
|
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, illuminatred when unit is on.
Flashes when batteries are low, or to indicate charging.
flashes when muted
|
RF
|
Frequency Range
|
72.025 - 75.925 MHz
|
Number of Channels
|
17 wide band, 40 narrow band
|
Frequency Accuracy
|
+/- 0.005 percent stability 32 to
122 degrees fahrenheit
|
Antenna Type
|
Microphone Cable
|
Transmitter Stability
|
50 PPM
|
Transmitter Range
|
From 0 to 150 ft
|
Antenna Connector
|
3.5 mm connector
|
Output Power
|
Less than 10 mW
|
Number of Simultaneous
Transmitters
|
6 |
Power
|
Power Supply
|
I/P 120 VAC
O/P 7.5 VDC 250 mA
Drop in contact points for une with charging cases
Power supply not included
|
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
|
Battery Type
|
Two AA batteries, alkaline or NiMH
|
Battery Life
|
15 hours alkaline, 15 hours NiMH
rechargeable
|
Battery Charging Time
|
Fully automatic, 13 hours
|
Compliance
|
RoHS, WEEE, UL, PSE, CE, CUL, TUV,
CB compliant
|
Physical
|
Color
|
Dark Grey with white silk
screening
|
Door
|
Manually lockable, controls
accessible through doors
|
Environmental
|
Temperature - Operation
|
14 to 104 degrees fahrenheit
|
Temperature - Storage
|
-4 to 122 degrees fahrenheit
|
Relative Humidity
|
0 to 95 percent relative humidity,
non-condensing
|
Compliance
|
RF
|
FCC Part 15, Industry Canada
|
Weight and Dimensions
|
Dimensions
|
3" x 5" x 1" |
Weight
|
1 lbs
|
A-20190114-1831-200-L
*This item is BRAND NEW - not refurbished. It comes with all
manufacturer supplied accessories; and full manufacturer's USA
warranty.
|
