Baofeng BF-P618, Руководство пользователя

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Keypad locked: allow a user to enable or disable keypad lock via menu.
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LED indicator: allow a user to enable or disable all indicators via menu.
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Squelch level: this function is used to increase the SQ level when interference from surroundings is
high to avoid interference. The SQ level can be set between 1 and 5 and is level 3 by default. A user can
set the SQ level according to the operating environment and requirements.
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Mic level: allow a user to set the mic level via menu (level 1-9)
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VOX level: allow a user to set the VOX level via menu (level 0-9)
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LCD contrast: allow a user to set LCD contrast via menu. (level 1-5). It is level 2 by default.