天(tian)津射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源是(shi)(shi)一種(zhong)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)產(chan)生(sheng)和(he)(he)(he)發(fa)(fa)射(she)(she)(she)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)的(de)(de)(de)電(dian)(dian)(dian)(dian)子設備。它(ta)通(tong)常(chang)包(bao)括一個(ge)發(fa)(fa)射(she)(she)(she)機和(he)(he)(he)一個(ge)接(jie)(jie)收(shou)(shou)(shou)機，用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)將電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)轉換(huan)為(wei)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)，并將射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)發(fa)(fa)送(song)到(dao)(dao)(dao)接(jie)(jie)收(shou)(shou)(shou)機，以(yi)(yi)實現信(xin)(xin)(xin)(xin)(xin)(xin)息的(de)(de)(de)傳輸。天(tian)津射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源的(de)(de)(de)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)范圍通(tong)常(chang)從(cong)(cong)150MHz到(dao)(dao)(dao)400MHz，模擬信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源維(wei)修，它(ta)們可(ke)以(yi)(yi)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)廣播、通(tong)信(xin)(xin)(xin)(xin)(xin)(xin)、測(ce)量和(he)(he)(he)監測(ce)等多(duo)種(zhong)應用(yong)(yong)(yong)(yong)。發(fa)(fa)射(she)(she)(she)機是(shi)(shi)天(tian)津射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源的(de)(de)(de)部件，它(ta)將電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)轉換(huan)為(wei)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)。發(fa)(fa)射(she)(she)(she)機通(tong)常(chang)由(you)(you)功(gong)(gong)率(lv)(lv)(lv)(lv)放(fang)大(da)(da)器(qi)、發(fa)(fa)射(she)(she)(she)控(kong)制(zhi)電(dian)(dian)(dian)(dian)路(lu)(lu)和(he)(he)(he)天(tian)線組(zu)(zu)成(cheng)。功(gong)(gong)率(lv)(lv)(lv)(lv)放(fang)大(da)(da)器(qi)將輸入的(de)(de)(de)電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)轉換(huan)為(wei)高(gao)功(gong)(gong)率(lv)(lv)(lv)(lv)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)，發(fa)(fa)射(she)(she)(she)控(kong)制(zhi)電(dian)(dian)(dian)(dian)路(lu)(lu)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)控(kong)制(zhi)發(fa)(fa)射(she)(she)(she)功(gong)(gong)率(lv)(lv)(lv)(lv)和(he)(he)(he)發(fa)(fa)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)，而天(tian)線則用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)將發(fa)(fa)射(she)(she)(she)機產(chan)生(sheng)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)發(fa)(fa)送(song)到(dao)(dao)(dao)接(jie)(jie)收(shou)(shou)(shou)機。接(jie)(jie)收(shou)(shou)(shou)機是(shi)(shi)天(tian)津射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源的(de)(de)(de)另一個(ge)部件，它(ta)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)接(jie)(jie)收(shou)(shou)(shou)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)并將其轉換(huan)回(hui)電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)。接(jie)(jie)收(shou)(shou)(shou)機通(tong)常(chang)由(you)(you)、放(fang)大(da)(da)器(qi)和(he)(he)(he)解(jie)調電(dian)(dian)(dian)(dian)路(lu)(lu)組(zu)(zu)成(cheng)。用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)接(jie)(jie)收(shou)(shou)(shou)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)，放(fang)大(da)(da)器(qi)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)將接(jie)(jie)收(shou)(shou)(shou)到(dao)(dao)(dao)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)放(fang)大(da)(da)，而解(jie)調電(dian)(dian)(dian)(dian)路(lu)(lu)則用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)將接(jie)(jie)收(shou)(shou)(shou)到(dao)(dao)(dao)的(de)(de)(de)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)轉換(huan)為(wei)電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)。除了發(fa)(fa)射(she)(she)(she)機和(he)(he)(he)接(jie)(jie)收(shou)(shou)(shou)機之外，天(tian)津射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源還包(bao)括其他一些(xie)組(zu)(zu)件，例(li)如頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)計、功(gong)(gong)率(lv)(lv)(lv)(lv)計、電(dian)(dian)(dian)(dian)壓(ya)表和(he)(he)(he)電(dian)(dian)(dian)(dian)流表等。這(zhe)些(xie)組(zu)(zu)件用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)測(ce)量射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)的(de)(de)(de)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)、功(gong)(gong)率(lv)(lv)(lv)(lv)和(he)(he)(he)電(dian)(dian)(dian)(dian)壓(ya)等參數。總(zong)的(de)(de)(de)來說，天(tian)津射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源是(shi)(shi)一種(zhong)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)產(chan)生(sheng)和(he)(he)(he)發(fa)(fa)射(she)(she)(she)射(she)(she)(she)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)的(de)(de)(de)電(dian)(dian)(dian)(dian)子設備，青島模擬信(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)(hao)(hao)(hao)源，它(ta)由(you)(you)發(fa)(fa)射(she)(she)(she)機、接(jie)(jie)收(shou)(shou)(shou)機、頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)計、功(gong)(gong)率(lv)(lv)(lv)(lv)計、電(dian)(dian)(dian)(dian)壓(ya)表和(he)(he)(he)電(dian)(dian)(dian)(dian)流表等組(zu)(zu)成(cheng)。它(ta)的(de)(de)(de)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)(pin)率(lv)(lv)(lv)(lv)范圍通(tong)常(chang)從(cong)(cong)150MHz到(dao)(dao)(dao)400MHz，可(ke)以(yi)(yi)用(yong)(yong)(yong)(yong)于(yu)(yu)(yu)廣播、通(tong)信(xin)(xin)(xin)(xin)(xin)(xin)、測(ce)量和(he)(he)(he)監測(ce)等多(duo)種(zhong)應用(yong)(yong)(yong)(yong)。

在進(jin)行(xing)天津模(mo)擬(ni)信(xin)號(hao)源(yuan)測試或制作時(shi)，模(mo)擬(ni)信(xin)號(hao)源(yuan)出售，有(you)幾個重要(yao)的(de)(de)(de)注意事項：1.保持(chi)設備(bei)清(qing)潔。如(ru)果電路板上(shang)出現(xian)焊(han)(han)接現(xian)象的(de)(de)(de)話(hua)是(shi)不可以繼續(xu)使用(yong)的(de)(de)(de)；而且對(dui)同一(yi)焊(han)(han)盤不能反復加(jia)(jia)熱，模(mo)擬(ni)信(xin)號(hao)源(yuan)出租，以免(mian)造(zao)成印刷線路板銅箔面起泡和脫(tuo)落的(de)(de)(de)現(xian)象發(fa)生(sheng)[2]。若是(shi)在組裝(zhuang)電源(yuan)部(bu)分的(de)(de)(de)時(shi)候(hou)沒有(you)安裝(zhuang)濾波器(qi)或是(shi)行(xing)管、大(da)功率晶體管的(de)(de)(de)基極容(rong)易(yi)(yi)發(fa)熱的(de)(de)(de)元(yuan)(yuan)器(qi)件燒毀就(jiu)(jiu)麻煩(fan)了(le)4）。對(dui)于這種情況的(de)(de)(de)發(fa)生(sheng)我(wo)們(men)是(shi)可以采取一(yi)些預防(fang)措(cuo)施(shi)來避免(mian)不必要(yao)的(de)(de)(de)損失5））——在容(rong)易(yi)(yi)出現(xian)問題的(de)(de)(de)部(bu)位裝(zhuang)好保護元(yuan)(yuan)件6)。這樣就(jiu)(jiu)可以使得我(wo)們(men)的(de)(de)(de)使用(yong)過程更加(jia)(jia)順暢了(le)7】。

天津(jin)信號源的(de)特(te)(te)點(dian)(dian)主要(yao)表現在(zai)其(qi)(qi)(qi)地理位置和(he)(he)歷史背景上(shang)。首(shou)先，作為(wei)中(zhong)國北方(fang)的(de)重(zhong)要(yao)港(gang)口城市和(he)(he)經(jing)濟(ji)中(zhong)心之(zhi)一，它的(de)經(jing)濟(ji)實(shi)力、工業(ye)基礎強大(da)是(shi)(shi)其(qi)(qi)(qi)特(te)(te)點(dian)(dian)；其(qi)(qi)(qi)次，作為(wei)近(jin)代列強瓜分中(zhong)國的(de)結果之(zhi)一的(de)天津(jin)市有(you)著深厚(hou)的(de)歷史文化(hua)底蘊及影響力；此外(wai)，由于毗鄰北京(jing)這(zhe)個超(chao)大(da)城市的(de)特(te)(te)殊地理環境(jing)使(shi)得其(qi)(qi)(qi)在(zai)政治與(yu)交通方(fang)面具(ju)有(you)特(te)(te)殊性。總之(zhi)，雖然(ran)每(mei)座城有(you)其(qi)(qi)(qi)的(de)性格或特(te)(te)色，“但地上(shang)必然(ran)有(you)標識”，這(zhe)也就是(shi)(shi)我(wo)所說的(de)“天上(shang)不會掉(diao)餡餅”。這(zhe)些不同的(de)特(te)(te)點(dian)(dian)和(he)(he)屬性構成(cheng)了(le)豐富多(duo)彩(cai)的(de)城市生態系統.