Mobile phone signal coverage for tunnel Project description: mobile Signal coverage system of Tianjin Electric Power Tunnel, about 2 kilometers in length, with 3 shafts in the tunnel,
It is necessary to cover the tunnel and hoistway operation area with three-network signal coverage. After the installation is completed, normal call + Internet access functions can be achieved in the tunnel.
Design:
1. First of all, in the tunnel, a one-to-two fiber optic near-end repeater + fiber optic remote repeater is used to cover the tunnel. Each far-end is connected to two plate antennas, which can cover a distance of about 900 meters. Therefore, 2 sets of remote can cover a distance of 1800 meters. Because the tail has a partly curved angle, a 2W power wireless repeater is added at the tail to cover the curved tunnel section at the tail.
2. Coverage of the working area: The area inside the shaft is small, and three 2W power repeaters can be used to enhance the indoor signal of each shaft.
Connection diagram:
Equipment List
No. Name Model Model Unit Quantity
1 10W tri-band near-end machine Near-end KFB-GDW-N 1
2 10W tri-band remote machine Remote KF40D-GDW-R 2
3 2W Tri-band Wireless Repeater KW35A-GDW Unit 4
4 outdoor large pairs of weekly receiving antennas ODS-12NK-70/270 pairs of 5
5 plate-shaped transmitting antenna OBZ-15NK-698/2700 pairs of 5
6 1/2 feeder 50-12 feeder m 200
7 Two power splitters CASP-2N-2 pcs 2
8 ceiling antenna LCD-3NK-80/270 6
9 Two power splitters CASP-2N-2 pcs 5
10 1/2 feeder interface N-J-1/2 pcs 50
11 Optical cable double FC interface (1 core 2 steel wires) CQ m 1000
Article source: www.lintratek.com Lintratek cell phone signal booster
Post time: May-24-2023