863 Mhz Specifications - Listen LT-700-072 User Manual

LT-700 Specifications
The portable FM Transmitter shall be capable of broadcasting on 17 channels Channel tuning shall be capable
of being locked. The transmitter shall have a SNR of 70 db or greater. The output power shall be adjustable to
quarter, half or full. The device shall have an audio frequency response of 50 Hz to 15 kHz, +/-3db. The device
shall incorporate a microphone sensitivity switch. The device shall incorporate a mute switch. The unit shall
operate off of 2 AA batteries. The battery door shall be capable of being mechanically locked. The device
shall incorporate an LCD display that indicates battery level, channel, channel lock, low battery, battery
charging, programming, and RF signal strength. The portable transmitter shall incorporate automatic battery
charging circuitry for recharging of NiMH batteries. The Listen LT-700-863 is specified.
RF Frequency Range
Number of Channels
Frequency Accuracy
RF Transmitter Stability
Output Power
Antenna
Compliance
System Frequency Response
System Signal to Noise Ratio
System Distortion
Microphone Input
Audio
Microphone Sensitivity
Line Input
Microphone power
User Controls
Set-up Controls
Controls
(battery compartment)
Programming
LED
Indicators
RF Power
LCD Display
Battery Type
Battery Life (Listen batteries)
Battery Charging (NiMH only)
Power
Power Supply (LA-208-03)
Power Supply Connector
Power Supply Compliance
Dimensions (H x W x D)
Color
Unit Weight
Physical
Unit Weight with batteries
Shipping Weight
Door
Temperature - Operation
Environmental Temperature - Storage
Humidity
Architectural Specifications
Specifications
863.050 - 864.950 MHz
17 Wideband
+/-.005% stability 0- 50C
50 PPM
10mW maximum (adjustable)
Integrated External Antenna
CE, ETSI, RoHS
50Hz - 15kHz (+/-3db)
70db (A-Weighted)
<2% THD @ 80% modulation
Unbalanced, tip of 3.5mm connector, -20 dbu nominal, -30 dbu maximum, impedance 21 ohms
Three position switch: high, middle, and low; 6db increments
Unbalanced, ring of 3.5mm connector, -10dbu nominal input level, -3dbu
maximum, impedance 10K ohms
3VDC Bias
Power, mute, channel up/down, volume
Mic sensitivity, NiMH/alkaline battery switch
Channel Lock Out, Channel Lock On, RF Power
Red, illuminated when unit is on. Flashes when batteries are low, or to indicate charging. Flashes quickly
when muted.
Indicated on the LCD (low, mid, high)
Channel Designation, lock status, RF power level, programming
Type: 2 AA batteries, Alkaline or NiMH
15 hours alkaline (LA-361), 8 hours NiMH rechargeable (LA-362)
Fully Automatic, 14 hours maximum
7.5VDC, center positive 300 mA. Drop in contact points for use with charging cases. Power supply not
included (LA-208)
2.3 mm OD by .7mm ID, barrel type
RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
5.0 x 3.0 x 1.0 in (13.0 x 7.6 x 2.5 cm)
Dark Grey with white silk screening
3.9 oz (111g)
5.8 oz (164g)
1.0 lbs. (0.45kg)
Manually Lockable. Up, down, and power buttons through door. Other controls behind door (see controls)
-10C (14F) to +40C (104F)
-20C (-4F) to +50C (122F)
0 to 95% Relative Humidity, non condensing
LT-700-863
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