User's Manual

SZZJ-A10~17LF-LCPA User
Manual
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4
reciprocating drill
1
Engineering-owned, punch the wall
5
Shot bit
M3
1
Engineering-owned, punch the wall
7.4. Installation of donor antenna
The repeater’s main function is to improve weak RF signals of an area. A simple formula: Input power+ Gain=
Output power. The signal strength from the outdoor antenna directly affects the efficiency of the indoor
coverage. It is very important to choose the donor antenna location in order to get the best signals.
◼ Testing the signal strength received from donor antenna mounted in site by mobile phone:
⚫ Please select the top of building to install the donor antenna if total floors are less than 7 floors,
and shall try your best to select places like balcony or platform lower than 7
th
floor for donor
antenna if the buildings are over 7 floors, because the mobile signals are clean at less than 7
th
floor.
⚫ The mobile phone shall display full bar signals in location where the donor antenna is installed
⚫ The phone calls or data transmission shall be smooth and stable by 3 times testing in location
where the donor antenna is to be installed
⚫ As shown from the above illustration, testing the signals from A to E, and select a best place that
displays full bar signals to install the donor antenna.
◼ Selecting the installation direction of donor antenna.
⚫ The donor antenna shall point to the direction of the tower, and it would be much better to keep
line of sight.
⚫ Please select the opposite directions for donor antenna and server antenna. If donor and server