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In the Whisper position the audio output is reduced by a factor of 10 and the microphone sensitivity is increased by about the same amount.
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Having set the four frequency control knobs the operator has then to set the only remaining control, the system switch, to one of its four positions: Off, Whisper, Loud and Noise-On. The desired frequency is set by four knobs on the side of the radio which can be operated even while the operator is wearing Arctic mittens, or in the dark by counting clicks from the end-stops. The radio operates from a 15VDC battery pack. UK/PRC 350 The Clansman PRC-350 is a narrow-band FM VHF man-pack radio that operates from 36-57MHz in 2KHz steps, total of 841 programmable channels with 2 Watts output.
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