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KingTone Tetra DMR UHF 400MHz 450MHz Raina Whakanuia BDA e whakamahia ana mo te Punaha Tohatoha Roo (IBS), Ruapapa, Kaowhionga Tunnel

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KingTone Tetra DMR UHF 400MHz 450MHz Raina Amplifer BDA whakamahia mo te Pūnaha Tohatoha Roto (IBS), Raro, Tunnel Coverage Roto Tohatoha Pūnaha (IBS), Raro, Tunnel Coverage Solution Steps: 1. Te rangahau miihini pae whakauru: Ko te tohu teihana turanga 380- 400MHz?Ka taea e te tohu waea pukoro i te waahi tomokanga kauhanga te whiwhi tohu 3-4 (me whai -85dBm, pai ake ranei te kaha o te mara)?Ki te kore, rapua he waahi e tata ana ki te kauhanga me te tohu pai hei tohu tohu...


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    KingTone Tetra DMR UHF 400MHz 450MHz Raina Whakanuia BDA e whakamahia ana mo te Punaha Tohatoha Roo (IBS), Ruapapa, Kaowhionga Tunnel

    hoahoa kaupapa kauhanga

    Pūnaha Tohatoha Roto (IBS), Raro raro, Nga Whakataunga Whakataunga Whakawhitinga Tunnel:

    1. Te rangahau miihini pae whakaurunga: Ko te tohu teihana turanga 380-400MHz?

    Ka taea e te tohu waea pukoro i te waahi tomokanga kauhanga te whiwhi tohu 3-4 (me whai -85dBm, pai ake ranei te kaha o te mara)?Ki te kore, rapua he waahi e tata ana ki te kauhanga me te tohu pai hei tohu tohu;

    Tuhipoka: Ko te waahi whiwhi me te tuunga o te antenna whiwhi, engari ehara i te tuunga o te tukurua.Ko te tawhiti mai i te antenna whiwhi ki te tukurua kaore i te iti (ka tata, ka tawhiti ranei), ka whakatika te kaihoko i a ia ano kia rite ki te kaupapa;

     

    2, whakaurunga antenna

    Ka rua nga tauranga o te kaitahuri, ka hono te tauranga BS ki te antenna whiwhi (ki te teihana turanga), ka hono te tauranga MS ki te uhi i te antenna (ki te rohe hipoki);

    Heoi, hei karo i te whakahihiri i a ia ano o te kaikorero, kaore e taea e te kaitoi te mahi (ma te kaha o te whakaihiihi i a ia ano ka wera te kōwae whakahiato hiko tukurua), no reira kia whai whakaaro ki nga waahanga e rua e whai ake nei:

    a, ko te antenna tango me te antenna hipoki me hoki ki muri;

    b, ko te tawhiti i waenga i te antenna whiwhi me te antenna hipoki he neke atu i te 50 mita, ka whakatikahia te tawhiti motuhake kia rite ki te ahuatanga o te waahi;

    c.Mena ko te tukanga whakaurunga, ko te tawhiti i waenga i nga antenna e rua kua tae ki te 80 mita neke atu ranei, kaore e taea te karo i te whakahihiri whaiaro.E taunaki ana kia taapirihia e nga kaihoko he kupenga wehe i waenga i nga antenna e rua (penei i te waahanga rino nui) me te whakamahi ranei i nga tikanga o te waahi ki te Ko te antenna he mokemoke (penei i te maunga, i te whare nui ranei);

    3, kia rite ki te rohe kapinga: 500 mita te roa o te kauhanga hei whakanoho i tetahi miihini mamao

    4, pūwhāngai & tūhonohono: 1/2″ taura coaxial, te roa: ka whakarite nga kaihoko ki nga hiahia kaupapa!

    5, ki te mea he kokonga kei roto i te kauhanga, e taunaki ana kia taapirihia he wehenga rua-kaha ki te kaitahuri, toia he kai whangai, ka taapirihia he antenna hipoki hei hipoki;

    KingTone-Tunnel-Solution


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