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The Base Station Transmitter, model BST-25/216, is a transmitter for an FM amplification system designed for use by individuals who are hard of hearing. This transmitter may be used for personal cueing, for tour guide applications, and language interpretation, as well as for assistive listening applications, and is compatible with the PR-216 Personal Receiver (see separate entry). It has 57 user-selectable channels in the 216-217 megahertz (MHz) range, including 38 standard narrow-band channels and 19 high-fidelity narrow-band channels with companded audio processing. The transmitter has a single-window LED (light-emitting diode) display for operation indicators, including a bargraph VU Meter that displays audio input (modulation), a two-digit alpha numeric display that shows the operating channel, a five-digit numeric display that shows operating frequency, an antenna indicator that displays deficient antenna condition, a lock-out Indicator that shows tuning has been disabled, and a test-tone generator for receiver testing and audio level referencing. A microcontroller automatically sets the modulation deviation, the audio mode for companding processing, and the EQ when corresponding channels are selected. The device can accommodate a top-mounted telescopic antenna or an external antenna. It comes with a female audio input connector for microphone and line level input; a male power input connector; and a BNC type RF output connector. An Operator's Manual may be downloaded from the manufacturer's web site. POWER: Uses alternating current (AC) or 12 volts direct current (DC). DIMENSIONS (HxLxW): 1.75 x 5 5/8 x 6.5 inches. WEIGHT: 44 ounces. WARRANTY: One year.
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