收音机: 无线电基础与收音机

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	无线电基础与收音机
	本书由浅入深，由简单到复杂，按有利于实验的顺序，从低频功率放大级、低放前级、检波级、中放级到变频级，分别介绍了收音机各级电路的简单工作原理，本级所使用的元、器件性能和作用，元件检测，安装调试，维修方法和典型故障分析等知识，并为初学者提供了布 ... Tags : None, Posted on 2010-04-28

	The dawn of amateur radio in the U.K.(收音机雏形的诞生)
	P2 The dawn of amateur radio in the U.K. and Greece : a personal view 2 Prologue Thales of Miletus. Thales, who was born in 640 B.C., was a man of exceptional wisdom and one of the Seven Sages of Ancient Greece. He was the father of Greek, ... Tags : dawn radio 雏形收音机 , Posted on 2010-04-27

	调幅收音台和调频电视转播台与公路的防护间距标准
	根据国家计委计综［１９９１］２９０号文的要求，由原广播电影电视部会同有关部门共同制订的《调幅收音台和调频电视转播台与公路的防护间距标准》已经有关部门会审，现批准《调幅收音台和调频电视转播台与公路的防护间距标准》ＧＢ５０２８５—９８为强制性国 ... Tags : 转播台调幅间距防护公路 , Posted on 2010-04-28