Installation Manual – Antenna & Feeder System Installation
BTS3802C & RRU
Chapter 2
Installing RF Antenna & Feeder System
2-47
Figure 2-43
Wrapping up the feeder with waterproof insulation tape
4) When wrapping to the point 2~5cm another connector or grounding clamp,
reverse the direction to let the wrapping goes back towards starting point. When
it reaches the starting point, reverse the direction one more time. In this way, the
feeder is wrapped up with three layers of waterproof insulation tape;
5) After wrapping, squeeze the tape stuck to the feeder to make sure no air remains
between tape layers;
6) When the wrapping of the waterproof insulation tape is done, it is necessary to
wrap it up with PVC tape to prevent the wearing and aging of the waterproof
insulation tape;
7) The wrapping of PVC tape is similar to that of waterproof insulation tape. Start
wrapping spirally upward with 1/2 width of overlapping between adjacent layers.
Reserve the wrapping direction twice to make three-layer cover. Make sure to
maintain the stretching strength. The feeder treated with waterproof and
encapsulation treatment is shown in Figure 2-44.
Figure 2-44
Feeder with waterproof and encapsulation treatment
2.18.2 Waterproof Treatment for Feeder Window
1) Put the two semicircle sealing sleeves around the outside of the big holes in the
feeder window.
2) Put the two steel hoops in the two grooves of the sealing sleeves, and tighten the
screws on the hoop using a screwdriver.
