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2021֮ά޽ά޷۸ҵ

ʱ:2021-02-21 07:03 Դ: ת:عѶ
˾ǵ֮ijȨάģӵһ֧ӲάŶӣȽļ豸ԭȷάųָѶȹϣԭʴﵽ

˾ǵ֮ij.Ȩάģӵһ֧ӲάŶӣȽļ豸ԭȷάųָѶȹϣԭʴﵽ³ġؿͻɽݻ˾ͬǵһվʽ񣩡칦άޣṩԭװ칦άԭ칦ά޼ʦ˾ṩ칦ŵİװߡԵȷ񡣾ḻһ ޸ʴﵽǰЧӭʼĻšַַܲ:㶫зخӶ·124ŵ°԰һһ101ײ㡣

֮졸ҹ.Լά޼

2021֮ά޽ά޷۸ҵ

ַʹκһ豸ѹͬʱһ豸أͰϱߵ˵ƽȵ̨4dBھ֮ǰ̨Ҫ˥4dBеĻҪڵ̨;֮һ4dB˥̨ƽʱ뵽֮Уͱ20dBͷŵ£1ϵͳȡ2豸ͬʱʱϵͳ̶Ȼͬͷȱ¡ȻַҲҪ߻ѸʱԼ൱ˮƽ豸ҲȽѡ


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֮졸ҹ.ϼ


UHFƵźŴԽСĽ巴ࡣ;γɣȷǽڵ˥ߵĴ󣬽ջҪˣϴķ书ʣʹõʱ̣Ƶ٣ʹõķΧ270MHZ չķΧ󣬿ɶʹãɸϵͳźŵĶ̬ΧһϵͳǷϵ豸֮źŵƽǷһõܹϵͳһܺõȺͶ̬ϵͳȲܸͨߵı߸еᷳһӰȣһЧƵźŽӽϵͳͨйͷ


˾ǵ֮ij.Ȩ..Լά޹˾baiǻdreaMSoundָduеzhiƷdaoƻ෴й֮zhuan޲shu䷢װġǾѡϳ˵ԭѡװɡַ㶫зخӶ·124ŵ°԰һһ101ײ㡢ϵ()ӭ٣ſڿɲؿͻɿݻ˾

֮졸ҹضά޼ܲ


ֻʮʱоȶʱһ۸оǻ3ռ۸о˶˫õԵƣȸߡ͡ԴзСбȽǿĿ£ĿռDzͬġǰƺλΧУλͷڲΪֿռУǰ߳Ϊ򡣺߳Ϊ4ΤɣΤɱ˶۸͹ĶȹϵСʱ˶۸ϴ󣻵ǿȽϴZHUywx8zhida

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