衛星電視接收器

俗稱“鍋”，是(shi)一(yi)種能夠(gou)接收衛星(xing)電(dian)視(shi)節目(mu)的裝(zhuang)置。生產、銷售和安裝(zhuang)衛星(xing)電(dian)視(shi)接收器屬(shu)于(yu)違法(fa)行為。

非法出售存在安全隱患

接收(shou)衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)需要(yao)一(yi)個“鍋蓋”、高(gao)頻頭、接收(shou)機等儀器(qi)。一(yi)般來說，私裝(zhuang)衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)天線(xian)的公(gong)司都(dou)用(yong)(yong)盜(dao)碼(ma)，價錢很便(bian)宜。除了盜(dao)版(ban)、走私產(chan)品泛濫和價格上(shang)沒(mei)有(you)(you)(you)統一(yi)標準外(wai)，私裝(zhuang)衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)接收(shou)器(qi)市(shi)場(chang)上(shang)還存(cun)在(zai)(zai)諸多(duo)欺詐行為(wei)。從事(shi)非法銷售安(an)(an)(an)裝(zhuang)衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)接收(shou)器(qi)，不(bu)僅是(shi)(shi)在(zai)(zai)安(an)(an)(an)裝(zhuang)、販售環節牟(mou)取(qu)利潤(run)，更重(zhong)要(yao)的是(shi)(shi)在(zai)(zai)消費(fei)者(zhe)(zhe)使用(yong)(yong)過(guo)程中運用(yong)(yong)欺詐方式，賺取(qu)不(bu)義(yi)之(zhi)財。其(qi)所售賣的天線(xian)在(zai)(zai)收(shou)視(shi)(shi)(shi)(shi)時(shi)(shi)所用(yong)(yong)的解(jie)碼(ma)器(qi)多(duo)是(shi)(shi)從港臺地(di)區盜(dao)版(ban)來的，由于(yu)安(an)(an)(an)全(quan)性(xing)和穩定(ding)性(xing)都(dou)沒(mei)有(you)(you)(you)保(bao)障，因此在(zai)(zai)接收(shou)電(dian)視(shi)(shi)(shi)(shi)節目(mu)(mu)時(shi)(shi)解(jie)碼(ma)器(qi)隨時(shi)(shi)可(ke)能失效。實際(ji)上(shang)，國外(wai)衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)節目(mu)(mu)公(gong)司定(ding)期更改解(jie)碼(ma)，從而(er)需要(yao)定(ding)期重(zhong)新買回密(mi)碼(ma)。為(wei)了牟(mou)取(qu)更多(duo)的利潤(run)，不(bu)法商(shang)販往(wang)往(wang)在(zai)(zai)安(an)(an)(an)裝(zhuang)調試(shi)衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)接收(shou)器(qi)時(shi)(shi)用(yong)(yong)事(shi)先(xian)做好的錄像信號(hao)蒙(meng)混過(guo)關，其(qi)實根本沒(mei)有(you)(you)(you)衛(wei)(wei)星接收(shou)節目(mu)(mu)。同時(shi)(shi)，衛(wei)(wei)星電(dian)視(shi)(shi)(shi)(shi)接收(shou)器(qi)雖然價格便(bian)宜，但是(shi)(shi)質量沒(mei)有(you)(you)(you)保(bao)證(zheng)，還存(cun)在(zai)(zai)安(an)(an)(an)全(quan)隱患，而(er)銷售者(zhe)(zhe)大都(dou)沒(mei)有(you)(you)(you)固定(ding)的營業場(chang)所，一(yi)旦(dan)出現(xian)質量問題，消費(fei)者(zhe)(zhe)的權益得不(bu)到保(bao)障。

接收衛星節目雜波大是什么原因引起的？

1.接收(shou)天線未對準衛星(xing)，使信號(hao)過(guo)弱。應先左右調整(zheng)，找(zhao)到圖像最好、雜波最小(xiao)的位置，再上下移(yi)動，固定在沒有雜波的位置。

2.高頻頭頻率漂移(yi)引起中頻信號(hao)偏移(yi)，放(fang)大(da)量下降。應調整其本(ben)振頻率，讓雜波消失。

3.在(zai)大雨、大雪、大霧(wu)天氣(qi)，信號（尤其是Ku波(bo)段）受到衰減(jian)造成。待雨雪過后會恢復正常(chang)。

此(ci)外，如(ru)選(xuan)(xuan)用天線的(de)口徑偏小(xiao)(xiao)，使(shi)接(jie)收信號減弱亦(yi)會造成雜波。選(xuan)(xuan)購時應考(kao)慮衛星轉發器的(de)功(gong)率大小(xiao)(xiao)，若功(gong)率小(xiao)(xiao)，則應用較大口徑，并(bing)應留有適(shi)當余(yu)量。亦(yi)可選(xuan)(xuan)用低噪聲高增益優質高頻頭。

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