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                                                                                                                                                    監獄手機信號屏蔽器當前的現狀和誤區有哪些?

                                                                                                                                                    發布時間:2021-01-26瀏覽:

                                                                                                                                                    一、監獄手機信號屏蔽器的現狀:

                                                                                                                                                    1、 應該屏蔽的區域屏蔽不嚴格,費錢費力無實效;

                                                                                                                                                    2、 不該屏蔽的區域干擾嚴重,被投訴、無法正常使用;

                                                                                                                                                    3、 過于偏信偵測和偽基站技術、理想和現實有差距,目前國內無真正成功的案例可查;

                                                                                                                                                    二、監獄手機信號屏蔽器的誤區:

                                                                                                                                                    誤區一:功率越大越好

                                                                                                                                                    1、主機頻率輸出不準確、頻率飄移、帶寬太寬,功率浪費,干擾的基站;

                                                                                                                                                    2、簡單的掃頻功率壓制方式屏蔽效率不高,且輻射較大;

                                                                                                                                                    3、功率虛標、夸大宣傳,標稱功率失去其參考價值;

                                                                                                                                                    4、功率是基礎,技術是關鍵。硬拼功率不如找到好的方法和技巧;

                                                                                                                                                    誤區二:采用定向天線就能避免干擾

                                                                                                                                                    1、定向天線的定向角外還有一定的發射信號強度,只是比主瓣低許多而已,并非完全定向;

                                                                                                                                                    2、建筑物的反射,仍會造成對外干擾;

                                                                                                                                                    3、主機頻率飄移嚴重影響基站,產生對外干擾;

                                                                                                                                                    4、TD全時屏蔽干擾一定存在。

                                                                                                                                                     

                                                                                                                                                     

                                                                                                                                                    誤區三:大功率設備輻射大,小功率輻射小

                                                                                                                                                    1、大功率采用室外天線作用,作用距離遠、屏蔽覆蓋面大、屏蔽信號均勻反而輻射極微;

                                                                                                                                                    2、小功率設備如果不采用多天線拉遠距離屏蔽,而是集中布置或者5個天線在一起作用的話,其輻射功率將大于10微瓦/平方厘米,近距離輻射必定嚴重超標;


                                                                                                                                                    達特電子是國內較早從事于金屬探測器、無線信號屏蔽器,手機信號屏蔽器,進口地下金屬探測器、可視探地成像儀、地下金屬探測儀、手持金屬探測器、金屬安檢門,金屬探測門,5G手機信號屏蔽器、標準化考場信號屏蔽器的研發生產銷售與一體的公司。歡迎來電咨詢:0371-56668535

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