"

免费送55元彩金的网站拥有全球最顶尖的原生APP,每天为您提供千场精彩体育赛事,免费送55元彩金的网站更有真人、彩票、电子老虎机、真人电子竞技游戏等多种娱乐方式选择,免费送55元彩金的网站让您尽享娱乐、赛事投注等,且无后顾之忧!

<sub id="75xtb"><dfn id="75xtb"></dfn></sub>

<address id="75xtb"><dfn id="75xtb"><ins id="75xtb"></ins></dfn></address>
<sub id="75xtb"><listing id="75xtb"></listing></sub>

<sub id="75xtb"><dfn id="75xtb"></dfn></sub>

    <sub id="75xtb"><dfn id="75xtb"></dfn></sub>
    <address id="75xtb"><listing id="75xtb"><mark id="75xtb"></mark></listing></address>

    <address id="75xtb"></address>

    <sub id="75xtb"><var id="75xtb"></var></sub>

    <sub id="75xtb"><var id="75xtb"><output id="75xtb"></output></var></sub>

    <sub id="75xtb"></sub>
      <address id="75xtb"></address>

    <address id="75xtb"><dfn id="75xtb"><ins id="75xtb"></ins></dfn></address>

    <address id="75xtb"><dfn id="75xtb"><ins id="75xtb"></ins></dfn></address>

    <address id="75xtb"></address>

      <address id="75xtb"></address>

      <sub id="75xtb"><var id="75xtb"></var></sub>

          <sub id="75xtb"><dfn id="75xtb"></dfn></sub>
            <sub id="75xtb"><dfn id="75xtb"></dfn></sub>

            "
            current location:Service>Problem

            Tunnel signal coverage solution

            Come:Lintratek  date:2015-12-08

                  Tunnel signal coverage solution


                  Most tunnels are signal blind , and therefore need a dedicated tunnel coverage solutions. Coverage tunnels according to the tunnel function can be divided into: highway tunnel signal coverage, railway tunnels signal coverage , subway tunnels signal coverage and son on, according to the structural characteristics of the tunnel can be divided into: straight tunnel, more curved tunnel, short tunnels, long tunnels, single track tunnel , double-track tunnels. A variety of environments has its own characteristics, for a variety of application environments need to provide different solutions.
             
                  We have a 4 km long road tunnel as an example to give a solution. Necessary accessories Engineering: lintratek phone signal amplifier , eight elent yagi antenna, base station antenna. First, select a strong signal place to install the yagi antenna,and then install the base station antenna near the tunnel portal,the direction of antenna is alignment of the tunnel. Finally, use the cable connect the yagi antenna and amplifier , then connect the amplifier with base station antenna. If the tunnel is more than 4 kilometers or inside the tunnel bends are more or corner is large can use two-way radio solutions.

              免费送55元彩金的网站

            <sub id="75xtb"><dfn id="75xtb"></dfn></sub>

            <address id="75xtb"><dfn id="75xtb"><ins id="75xtb"></ins></dfn></address>
            <sub id="75xtb"><listing id="75xtb"></listing></sub>

            <sub id="75xtb"><dfn id="75xtb"></dfn></sub>

              <sub id="75xtb"><dfn id="75xtb"></dfn></sub>
              <address id="75xtb"><listing id="75xtb"><mark id="75xtb"></mark></listing></address>

              <address id="75xtb"></address>

              <sub id="75xtb"><var id="75xtb"></var></sub>

              <sub id="75xtb"><var id="75xtb"><output id="75xtb"></output></var></sub>

              <sub id="75xtb"></sub>
                <address id="75xtb"></address>

              <address id="75xtb"><dfn id="75xtb"><ins id="75xtb"></ins></dfn></address>

              <address id="75xtb"><dfn id="75xtb"><ins id="75xtb"></ins></dfn></address>

              <address id="75xtb"></address>

                <address id="75xtb"></address>

                <sub id="75xtb"><var id="75xtb"></var></sub>

                    <sub id="75xtb"><dfn id="75xtb"></dfn></sub>
                      <sub id="75xtb"><dfn id="75xtb"></dfn></sub>