LT-700 Specifications
Architectural Specifications
The portable FM transmitter shall be capable of broadcasting on 32 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). 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 device shall be able to enable companding. The unit shall operate off of two (2) AA batteries; alkaline or NiMH. 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
Specifications*
Audio
RF Frequency Range | 150.8000 MHz - 152.3500 MHz |
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Number of Channels | 6 wideband, 26 narrowband |
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Number of Simultaneous | Six (6) |
Transmitters |
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Frequency Accuracy | ± .005% stability 32 to 122º (0 to 50ºC) |
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Transmitter Stability | 50 PPM |
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Transmission Range | up to 45.72 m (150 ft.) |
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Output Power | 10 mW maximum |
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Antenna | Uses microphone cable |
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Antenna Connector | 3.5 mm connector |
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Compliance | |
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System Frequency | 50 Hz - 15 kHz (±3dB) |
Response |
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System Signal to Noise Ratio | SQ enabled 80 dB, SQ disabled 60 dB |
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System Distortion | <2% total harmonic distortion (THD) at 80% deviation |
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Microphone Input | Unbalanced, tip of 3.5mm connector, |
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Microphone Sensitivity | Three position switch: high, middle, and low; 6 db increments |
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Line Input | Unbalanced, ring of 3.5mm connector, |
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Microphone Power | 3 VDC Bias |
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Controls & Indicators
User Controls | Power, mute, channel UP/DOWN |
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Mic sensitivity, NiMH/alkaline battery, SQ enable/disable | |
compartment) |
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Programming | Channel lock out, Channel lock |
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LED | Red, illuminated when unit is on. Flashes when batteries are low, or to indicate charging. Flashes when muted. |
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Display | Channel Designation, lock status, signal strength indication, battery life, RF Power |
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Power
Battery Type | Two (2) AA batteries, alkaline or NiMH |
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Battery Life (Listen batteries) | 15 hours alkaline |
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Battery Charging (NIMH only) | Fully automatic, 13 hours |
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Power Supply | I/P 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging cases. Power supply not included |
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Power Supply Connector | 2.3mm OD by 0.7mm ID, barrel type connector 7.5 VDC, center positive <250 mA. |
| Drop in contact points for use with Listen charging cases |
Power Supply Compliance | RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant |
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| Dimensions (H x W x D) | 3.00 x 1.00 x 5.00 in. (7.6 x 2.5 x 13.0 cm) | |
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| Color | Dark Grey with white silk screening | |
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Physical | Unit Weight | 3.9 oz (111g) | |
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Unit Weight with batteries | 5.8 oz (164g) | ||
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| Shipping Weight | 1.0 lbs. (0.45kg) | |
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| Door | Manually Lockable (on sides). Up, down, and power buttons through door | |
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| * Specifications are subject to change without notification. |
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