Radio receiver noise squelching and operational indicating alarm
作者： Robert H. Koening
DOI:
关键词: Noise (radio) 、 Radio operator 、 Engineering 、 Electronic engineering 、 Radio receiver design 、 Squelch 、 Radio receiver 、 Electrical engineering 、 Pulse (music) 、 ALARM
摘要: A clock-driven pulse source is used to apply repetitive short pulses the squelch control connection point of circuitry a radio receiver deactivate momentarily at regular intervals. This provides periodic noise bursts "de-squelch" on an otherwise silent in order inform operator that live and volume adequate. light may also be connected system provide second, visual, indicator operational status radio. checking utilized where there are two or more radios use by providing additional for each use. The arranged so individual quickly ascertained sound and/or indicators.
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