由(you)于在(zai)戶(hu)外(wai)(wai)、室內等區域(yu)，無線(xian)對講系(xi)(xi)(xi)統(tong)(tong)的(de)(de)信(xin)號強度(du)較(jiao)弱，而且采用(yong)頻率調制(zhi)技術（如 MHZ、 NMR、 BSI等）產(chan)生(sheng)的(de)(de)信(xin)號傳(chuan)輸時(shi)延(yan)大，傳(chuan)輸距離遠。因(yin)此有(you)(you)線(xian)對講系(xi)(xi)(xi)統(tong)(tong)不適合在(zai)戶(hu)外(wai)(wai)環境(jing)使(shi)(shi)用(yong)，特別是(shi)在(zai)冬天及低風速季節使(shi)(shi)用(yong)。雖(sui)然無線(xian)對講系(xi)(xi)(xi)統(tong)(tong)也(ye)有(you)(you)著不錯的(de)(de)效(xiao)(xiao)果(guo)。但由(you)于系(xi)(xi)(xi)統(tong)(tong)工作時(shi)會有(you)(you)一(yi)定的(de)(de)干(gan)擾，使(shi)(shi)對講效(xiao)(xiao)果(guo)下(xia)降，另外(wai)(wai)在(zai)信(xin)號較(jiao)弱時(shi)對用(yong)戶(hu)語(yu)音產(chan)生(sheng)了影響。特別是(shi)在(zai)人員(yuan)復(fu)雜、通信(xin)距離較(jiao)短或需(xu)要較(jiao)長時(shi)間使(shi)(shi)用(yong)時(shi)。因(yin)此，更需(xu)要有(you)(you)一(yi)個可(ke)靠的(de)(de)無線(xian)對講系(xi)(xi)(xi)統(tong)(tong)提供與(yu)(yu)有(you)(you)線(xian)對講系(xi)(xi)(xi)統(tong)(tong)一(yi)樣的(de)(de)語(yu)音信(xin)息與(yu)(yu)控制(zhi)。無線(xian)對講系(xi)(xi)(xi)統(tong)(tong)具有(you)(you)很高的(de)(de)靈活性，它能夠滿足現場中所(suo)有(you)(you)環境(jing)使(shi)(shi)用(yong)需(xu)求并能隨時(shi)切換（如在(zai)野外(wai)(wai)、戶(hu)外(wai)(wai)電話(hua)等),用(yong)戶(hu)可(ke)以在(zai)任何地點(dian)使(shi)(shi)用(yong)、隨時(shi)、隨地進(jin)行通訊。使(shi)(shi)用(yong)方便、節省成本、節約費用(yong)。下(xia)面我們來了解一(yi)下(xia)無線(xian)對講系(xi)(xi)(xi)統(tong)(tong)它主要是(shi)什么優點(dian)？

1.性能穩(wen)定，可靠性高

在相同無(wu)(wu)線(xian)(xian)(xian)傳輸距離下(xia)，無(wu)(wu)線(xian)(xian)(xian)傳輸信(xin)(xin)(xin)號(hao)更穩定由(you)于使(shi)用了功(gong)率放(fang)大(da)器來對(dui)無(wu)(wu)線(xian)(xian)(xian)信(xin)(xin)(xin)號(hao)進行壓(ya)縮和(he)放(fang)大(da)，使(shi)無(wu)(wu)線(xian)(xian)(xian)信(xin)(xin)(xin)號(hao)更加(jia)穩定可靠。無(wu)(wu)線(xian)(xian)(xian)信(xin)(xin)(xin)號(hao)在弱電磁(ci)環境下(xia)也能(neng)保(bao)持較(jiao)好的(de)(de)性(xing)能(neng)。無(wu)(wu)線(xian)(xian)(xian)對(dui)講系(xi)統(tong)(tong)具有(you)發射(she)功(gong)率小、抗(kang)千(qian)擾(rao)(rao)能(neng)力強(與有(you)線(xian)(xian)(xian)對(dui)講系(xi)統(tong)(tong)比(bi)較(jiao))和(he)抗(kang)電磁(ci)干擾(rao)(rao)能(neng)力強(與有(you)線(xian)(xian)(xian)對(dui)講系(xi)統(tong)(tong)比(bi)較(jiao))的(de)(de)特點。無(wu)(wu)線(xian)(xian)(xian)對(dui)講系(xi)統(tong)(tong)發射(she)信(xin)(xin)(xin)號(hao)在發射(she)前和(he)發射(she)后均能(neng)保(bao)持良好的(de)(de)性(xing)能(neng)，使(shi)用過(guo)程(cheng)中，發射(she)信(xin)(xin)(xin)號(hao)與接收信(xin)(xin)(xin)號(hao)完全不受任何千(qian)擾(rao)(rao)，可保(bao)持很好的(de)(de)穩定性(xing)，具有(you)良好的(de)(de)抗(kang)千(qian)擾(rao)(rao)性(xing)和(he)抗(kang)低頻干擾(rao)(rao)能(neng)力，即(ji)使(shi)在惡劣的(de)(de)環境下(xia)也能(neng)保(bao)持較(jiao)好的(de)(de)性(xing)能(neng)。因此無(wu)(wu)線(xian)(xian)(xian)系(xi)統(tong)(tong)有(you)較(jiao)高的(de)(de)可靠性(xing)。

2.功(gong)耗小、不(bu)受天(tian)氣、濕(shi)度的影響(xiang)

無(wu)(wu)線(xian)對(dui)講系統(tong)在(zai)不同(tong)的環(huan)境(jing)中，無(wu)(wu)線(xian)通(tong)信(xin)設(she)備(bei)和有線(xian)通(tong)信(xin)設(she)備(bei)一樣都(dou)要(yao)進行電(dian)能的消耗(hao)。當環(huan)境(jing)溫(wen)度(du)在(zai)-40°C以下時(shi)，無(wu)(wu)線(xian)通(tong)信(xin)設(she)備(bei)需(xu)要(yao)每天工作(zuo)8小時(shi)左(zuo)右;當環(huan)境(jing)溫(wen)度(du)為(wei)-20°C時(shi)，每天工作(zuo)8小時(shi)左(zuo)右;當環(huan)境(jing)溫(wen)度(du)為(wei)-30°C時(shi)，每天工作(zuo)4小時(shi)左(zuo)右。目前市場上常見(jian)的無(wu)(wu)線(xian)對(dui)講系統(tong)有兩種電(dian)源輸(shu)(shu)入(ru)方式(shi)，一種是電(dian)源輸(shu)(shu)入(ru)，另一種是電(dian)源輸(shu)(shu)出。從這兩種方式(shi)對(dui)系統(tong)的功(gong)(gong)耗(hao)來看，電(dian)源輸(shu)(shu)入(ru)方式(shi)的功(gong)(gong)耗(hao)更(geng)大一些(xie)，但是功(gong)(gong)耗(hao)很小。并且設(she)備(bei)的工作(zuo)環(huan)境(jing)不同(tong)，對(dui)電(dian)池的需(xu)求(qiu)量也不同(tong)，所以功(gong)(gong)耗(hao)也不同(tong)。

3信號不受干擾

在(zai)一(yi)些(xie)有(you)(you)(you)干(gan)(gan)擾(rao)(rao)(rao)的(de)(de)(de)地方，例如野外(wai)(wai)、機場(chang)、工(gong)廠等，一(yi)般(ban)采(cai)用(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)方式。分(fen)頻(pin)(pin)(pin)(pin)方式的(de)(de)(de)抗干(gan)(gan)擾(rao)(rao)(rao)能(neng)力(li)不(bu)強(qiang)(qiang)(qiang)，其(qi)抗干(gan)(gan)擾(rao)(rao)(rao)能(neng)力(li)主(zhu)要(yao)(yao)取決(jue)于射(she)(she)頻(pin)(pin)(pin)(pin)功(gong)率的(de)(de)(de)大小。分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)的(de)(de)(de)功(gong)率一(yi)般(ban)是(shi)50dB在(zai)50dB左右時，其(qi)抗干(gan)(gan)擾(rao)(rao)(rao)能(neng)力(li)強(qiang)(qiang)(qiang)。但由于分(fen)頻(pin)(pin)(pin)(pin)的(de)(de)(de)干(gan)(gan)擾(rao)(rao)(rao)與噪(zao)聲(主(zhu)要(yao)(yao)是(shi)周邊噪(zao)聲)具有(you)(you)(you)很(hen)(hen)強(qiang)(qiang)(qiang)的(de)(de)(de)互通性(xing)，當分(fen)頻(pin)(pin)(pin)(pin)發射(she)(she)的(de)(de)(de)信號(hao)(hao)(hao)(hao)超(chao)過50dB時，其(qi)抗千(qian)擾(rao)(rao)(rao)能(neng)力(li)就會(hui)減弱。另外(wai)(wai)，在(zai)一(yi)些(xie)有(you)(you)(you)噪(zao)音的(de)(de)(de)環境中使用(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)，會(hui)使分(fen)頻(pin)(pin)(pin)(pin)信號(hao)(hao)(hao)(hao)無(wu)法(fa)到達發射(she)(she)端(duan)的(de)(de)(de)接收(shou)機或者造(zao)成(cheng)發射(she)(she)端(duan)信號(hao)(hao)(hao)(hao)與接收(shou)端(duan)信號(hao)(hao)(hao)(hao)的(de)(de)(de)糟合而造(zao)成(cheng)分(fen)頻(pin)(pin)(pin)(pin)或干(gan)(gan)擾(rao)(rao)(rao)(例如在(zai)使用(yong)(yong)室外(wai)(wai)電話(hua)時) 。而采(cai)用(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)的(de)(de)(de)無(wu)線對(dui)講系統(tong)由于發射(she)(she)功(gong)率小，分(fen)頻(pin)(pin)(pin)(pin)后的(de)(de)(de)信號(hao)(hao)(hao)(hao)強(qiang)(qiang)(qiang)度(du)比有(you)(you)(you)線對(dui)講系統(tong)高很(hen)(hen)多(在(zai)實(shi)際使用(yong)(yong)中分(fen)頻(pin)(pin)(pin)(pin)設備一(yi)般(ban)可以(yi)將系統(tong)信號(hao)(hao)(hao)(hao)分(fen)頻(pin)(pin)(pin)(pin)到50dB以(yi)上),信號(hao)(hao)(hao)(hao)不(bu)受(shou)干(gan)(gan)擾(rao)(rao)(rao)。如果采(cai)用(yong)(yong)分(fen)頻(pin)(pin)(pin)(pin)技(ji)(ji)術(shu)，需要(yao)(yao)在(zai)較大的(de)(de)(de)回波功(gong)率下(xia)才(cai)能(neng)實(shi)現信號(hao)(hao)(hao)(hao)的(de)(de)(de)分(fen)頻(pin)(pin)(pin)(pin)工(gong)作(如分(fen)頻(pin)(pin)(pin)(pin)器發射(she)(she)信號(hao)(hao)(hao)(hao)與接收(shou)信號(hao)(hao)(hao)(hao)重疊時產生的(de)(de)(de)千(qian)擾(rao)(rao)(rao))和發送信號(hao)(hao)(hao)(hao)強(qiang)(qiang)(qiang)度(du)降低(di)(同頻(pin)(pin)(pin)(pin)帶內的(de)(de)(de)兩(liang)只天線對(dui)同一(yi)信道傳輸的(de)(de)(de)信號(hao)(hao)(hao)(hao)強(qiang)(qiang)(qiang)度(du)基本一(yi)致(zhi));如果采(cai)用(yong)(yong)混響技(ji)(ji)術(shu)，則可以(yi)實(shi)現對(dui)無(wu)線信號(hao)(hao)(hao)(hao)干(gan)(gan)擾(rao)(rao)(rao)的(de)(de)(de)抑(yi)制或降低(di)。