由于(yu)在(zai)戶(hu)外(wai)、室內(nei)等區域，無(wu)(wu)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)的(de)(de)信號強度較弱，而且采(cai)用(yong)(yong)(yong)(yong)(yong)頻(pin)率調制(zhi)技術（如(ru) MHZ、 NMR、 BSI等）產生的(de)(de)信號傳輸時(shi)延大(da)，傳輸距離遠。因此(ci)有(you)(you)(you)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)不適(shi)合在(zai)戶(hu)外(wai)環境(jing)使(shi)用(yong)(yong)(yong)(yong)(yong)，特(te)別是(shi)(shi)在(zai)冬(dong)天及低(di)風速季節使(shi)用(yong)(yong)(yong)(yong)(yong)。雖(sui)然無(wu)(wu)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)也有(you)(you)(you)著不錯(cuo)的(de)(de)效(xiao)果(guo)。但由于(yu)系(xi)(xi)統(tong)工(gong)作時(shi)會(hui)有(you)(you)(you)一(yi)定的(de)(de)干擾，使(shi)對講(jiang)(jiang)效(xiao)果(guo)下降(jiang)，另外(wai)在(zai)信號較弱時(shi)對用(yong)(yong)(yong)(yong)(yong)戶(hu)語音產生了影(ying)響。特(te)別是(shi)(shi)在(zai)人員復雜、通(tong)信距離較短或需要較長時(shi)間使(shi)用(yong)(yong)(yong)(yong)(yong)時(shi)。因此(ci)，更(geng)需要有(you)(you)(you)一(yi)個(ge)可靠的(de)(de)無(wu)(wu)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)提供與有(you)(you)(you)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)一(yi)樣(yang)的(de)(de)語音信息與控制(zhi)。無(wu)(wu)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)具有(you)(you)(you)很高(gao)的(de)(de)靈活性，它(ta)能夠滿足現場中所有(you)(you)(you)環境(jing)使(shi)用(yong)(yong)(yong)(yong)(yong)需求并能隨(sui)時(shi)切換(huan)（如(ru)在(zai)野外(wai)、戶(hu)外(wai)電(dian)話等),用(yong)(yong)(yong)(yong)(yong)戶(hu)可以(yi)在(zai)任何地點使(shi)用(yong)(yong)(yong)(yong)(yong)、隨(sui)時(shi)、隨(sui)地進(jin)行(xing)通(tong)訊(xun)。使(shi)用(yong)(yong)(yong)(yong)(yong)方便(bian)、節省成(cheng)本、節約費用(yong)(yong)(yong)(yong)(yong)。下面我們來了解(jie)一(yi)下無(wu)(wu)線(xian)(xian)(xian)對講(jiang)(jiang)系(xi)(xi)統(tong)它(ta)主要是(shi)(shi)什(shen)么優(you)點？

1.性能穩定，可靠性高(gao)

在(zai)相同無(wu)線(xian)(xian)傳輸距離下(xia)，無(wu)線(xian)(xian)傳輸信號(hao)(hao)(hao)更穩(wen)定由于使用了功(gong)率(lv)放(fang)(fang)大器來對(dui)無(wu)線(xian)(xian)信號(hao)(hao)(hao)進(jin)行壓縮和(he)(he)放(fang)(fang)大，使無(wu)線(xian)(xian)信號(hao)(hao)(hao)更加穩(wen)定可(ke)靠。無(wu)線(xian)(xian)信號(hao)(hao)(hao)在(zai)弱電(dian)磁(ci)環境(jing)(jing)下(xia)也(ye)能保(bao)持(chi)較(jiao)好的(de)(de)性能。無(wu)線(xian)(xian)對(dui)講系統(tong)具(ju)有(you)(you)(you)發(fa)(fa)射(she)功(gong)率(lv)小、抗千(qian)擾(rao)能力(li)強(與(yu)有(you)(you)(you)線(xian)(xian)對(dui)講系統(tong)比(bi)較(jiao))和(he)(he)抗電(dian)磁(ci)干擾(rao)能力(li)強(與(yu)有(you)(you)(you)線(xian)(xian)對(dui)講系統(tong)比(bi)較(jiao))的(de)(de)特(te)點。無(wu)線(xian)(xian)對(dui)講系統(tong)發(fa)(fa)射(she)信號(hao)(hao)(hao)在(zai)發(fa)(fa)射(she)前(qian)和(he)(he)發(fa)(fa)射(she)后均能保(bao)持(chi)良好的(de)(de)性能，使用過程中，發(fa)(fa)射(she)信號(hao)(hao)(hao)與(yu)接收信號(hao)(hao)(hao)完全不受(shou)任何千(qian)擾(rao)，可(ke)保(bao)持(chi)很好的(de)(de)穩(wen)定性，具(ju)有(you)(you)(you)良好的(de)(de)抗千(qian)擾(rao)性和(he)(he)抗低頻干擾(rao)能力(li)，即(ji)使在(zai)惡劣的(de)(de)環境(jing)(jing)下(xia)也(ye)能保(bao)持(chi)較(jiao)好的(de)(de)性能。因此無(wu)線(xian)(xian)系統(tong)有(you)(you)(you)較(jiao)高的(de)(de)可(ke)靠性。

2.功耗小(xiao)、不受天氣(qi)、濕度的(de)影響

無線(xian)(xian)對講系(xi)統(tong)在(zai)不同(tong)的(de)(de)環(huan)(huan)境(jing)(jing)中，無線(xian)(xian)通(tong)信(xin)(xin)設(she)備和有(you)線(xian)(xian)通(tong)信(xin)(xin)設(she)備一(yi)樣都(dou)要(yao)進行(xing)電(dian)(dian)(dian)能的(de)(de)消耗(hao)。當環(huan)(huan)境(jing)(jing)溫(wen)度在(zai)-40°C以(yi)下時，無線(xian)(xian)通(tong)信(xin)(xin)設(she)備需要(yao)每天(tian)工作8小(xiao)時左(zuo)(zuo)右;當環(huan)(huan)境(jing)(jing)溫(wen)度為-20°C時，每天(tian)工作8小(xiao)時左(zuo)(zuo)右;當環(huan)(huan)境(jing)(jing)溫(wen)度為-30°C時，每天(tian)工作4小(xiao)時左(zuo)(zuo)右。目前市場上常見的(de)(de)無線(xian)(xian)對講系(xi)統(tong)有(you)兩種(zhong)電(dian)(dian)(dian)源輸(shu)(shu)(shu)入方(fang)式，一(yi)種(zhong)是電(dian)(dian)(dian)源輸(shu)(shu)(shu)入，另一(yi)種(zhong)是電(dian)(dian)(dian)源輸(shu)(shu)(shu)出。從這兩種(zhong)方(fang)式對系(xi)統(tong)的(de)(de)功(gong)耗(hao)來(lai)看(kan)，電(dian)(dian)(dian)源輸(shu)(shu)(shu)入方(fang)式的(de)(de)功(gong)耗(hao)更(geng)大一(yi)些，但是功(gong)耗(hao)很小(xiao)。并且設(she)備的(de)(de)工作環(huan)(huan)境(jing)(jing)不同(tong)，對電(dian)(dian)(dian)池的(de)(de)需求量(liang)也(ye)不同(tong)，所以(yi)功(gong)耗(hao)也(ye)不同(tong)。

3信號不受干擾

在(zai)一(yi)些有(you)干(gan)(gan)擾(rao)(rao)(rao)(rao)的(de)(de)(de)地方，例(li)如(ru)野外、機(ji)場、工廠等，一(yi)般(ban)(ban)采用(yong)(yong)(yong)分(fen)(fen)頻(pin)方式。分(fen)(fen)頻(pin)方式的(de)(de)(de)抗干(gan)(gan)擾(rao)(rao)(rao)(rao)能力不(bu)強，其抗干(gan)(gan)擾(rao)(rao)(rao)(rao)能力主(zhu)要取(qu)決于(yu)(yu)射(she)(she)頻(pin)功(gong)(gong)(gong)率的(de)(de)(de)大(da)小。分(fen)(fen)頻(pin)技(ji)(ji)術的(de)(de)(de)功(gong)(gong)(gong)率一(yi)般(ban)(ban)是(shi)50dB在(zai)50dB左右時(shi)，其抗干(gan)(gan)擾(rao)(rao)(rao)(rao)能力強。但(dan)由于(yu)(yu)分(fen)(fen)頻(pin)的(de)(de)(de)干(gan)(gan)擾(rao)(rao)(rao)(rao)與(yu)噪聲(主(zhu)要是(shi)周邊噪聲)具有(you)很強的(de)(de)(de)互(hu)通(tong)性，當分(fen)(fen)頻(pin)發射(she)(she)的(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)超(chao)過50dB時(shi)，其抗千擾(rao)(rao)(rao)(rao)能力就會減(jian)弱。另外，在(zai)一(yi)些有(you)噪音的(de)(de)(de)環境中(zhong)使(shi)用(yong)(yong)(yong)分(fen)(fen)頻(pin)技(ji)(ji)術，會使(shi)分(fen)(fen)頻(pin)信(xin)(xin)(xin)(xin)(xin)號(hao)無(wu)法(fa)到達(da)發射(she)(she)端(duan)的(de)(de)(de)接(jie)收(shou)機(ji)或者造成發射(she)(she)端(duan)信(xin)(xin)(xin)(xin)(xin)號(hao)與(yu)接(jie)收(shou)端(duan)信(xin)(xin)(xin)(xin)(xin)號(hao)的(de)(de)(de)糟合而造成分(fen)(fen)頻(pin)或干(gan)(gan)擾(rao)(rao)(rao)(rao)(例(li)如(ru)在(zai)使(shi)用(yong)(yong)(yong)室(shi)外電話(hua)時(shi)) 。而采用(yong)(yong)(yong)分(fen)(fen)頻(pin)技(ji)(ji)術的(de)(de)(de)無(wu)線對講(jiang)(jiang)系統(tong)由于(yu)(yu)發射(she)(she)功(gong)(gong)(gong)率小，分(fen)(fen)頻(pin)后的(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)強度比有(you)線對講(jiang)(jiang)系統(tong)高很多(在(zai)實際使(shi)用(yong)(yong)(yong)中(zhong)分(fen)(fen)頻(pin)設備(bei)一(yi)般(ban)(ban)可以(yi)將系統(tong)信(xin)(xin)(xin)(xin)(xin)號(hao)分(fen)(fen)頻(pin)到50dB以(yi)上),信(xin)(xin)(xin)(xin)(xin)號(hao)不(bu)受(shou)干(gan)(gan)擾(rao)(rao)(rao)(rao)。如(ru)果(guo)采用(yong)(yong)(yong)分(fen)(fen)頻(pin)技(ji)(ji)術，需要在(zai)較大(da)的(de)(de)(de)回波功(gong)(gong)(gong)率下才能實現信(xin)(xin)(xin)(xin)(xin)號(hao)的(de)(de)(de)分(fen)(fen)頻(pin)工作(如(ru)分(fen)(fen)頻(pin)器發射(she)(she)信(xin)(xin)(xin)(xin)(xin)號(hao)與(yu)接(jie)收(shou)信(xin)(xin)(xin)(xin)(xin)號(hao)重疊時(shi)產生(sheng)的(de)(de)(de)千擾(rao)(rao)(rao)(rao))和發送(song)信(xin)(xin)(xin)(xin)(xin)號(hao)強度降(jiang)低(di)(同頻(pin)帶內的(de)(de)(de)兩只天(tian)線對同一(yi)信(xin)(xin)(xin)(xin)(xin)道傳輸的(de)(de)(de)信(xin)(xin)(xin)(xin)(xin)號(hao)強度基(ji)本一(yi)致);如(ru)果(guo)采用(yong)(yong)(yong)混響(xiang)技(ji)(ji)術，則可以(yi)實現對無(wu)線信(xin)(xin)(xin)(xin)(xin)號(hao)干(gan)(gan)擾(rao)(rao)(rao)(rao)的(de)(de)(de)抑制或降(jiang)低(di)。