4 hours. The transmission is a narrow-band FM signal, of 2.5 kHz deviation. The T2001-S transmission is duplexed on the microphone cable; meaning the microphone is the antenna. The audio circuitry is built around a DTC proprietary gain control (AGC) circuit, and a high-quality Knowles microphone.
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H25T2001S Audio Circuit and Body Mounting Tips The audio circuit is based on a DTC proprietary automatic gain control (AGC) hybrid circuit and an external, high-sensitivity Knowles electret microphone. Excellent audio quality is achieved in a wide variety of background noise environments.
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