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Next Generation
Signal Enhancement
•
Accessibility for the maintenance team.
b. PLACEMENT OF ANTENNAS
Antennas are deployed for intercepting signals from the donor site and
distributing signals to the mobile users. Proper selection of both DONOR
& SERVER antennas is of prime importance. Following points need to
be considered:
•
The antennas should have proper frequency band of
operation.
•
Gain as per requirement for achieving maximum efficiency.
It is 10-12 dB for the DONOR antenna.
•
Adequate separation from the power lines to avoid damage
to the equipment and humans.
•
Antenna with proper characteristics to maintain adequate
isolation to avoid oscillations. Normally, isolation should be
15 dB more than the gain set for the repeater. It should
have good front to back ratio.
•
The beam width for the DONOR antenna should be as small
as possible.
•
The beam width for SERVER antenna is 60 degree to 120
degree.
•
There should be adequate separation between the DONOR
& SERVER antennas to avoid interference and noise.
8.2 Installation Tools
You will need the following basic tools for installation:
i.
Standard wrenches/screwdrivers/cable stripper/cable cutter/pliers
set for installing the
R-20-930
Unit and antennas. (Refer to the
manufacturer’s recommendations for installing the antennas).
ii.
RF coaxial cable connection tools for installing connectors.
iii. Multi-meter.
iv.
Mobile handset loaded (e.g. Nokia) with Net engineering software to
be used for signal level measurement.
v.
Magnetic compass for measuring the azimuth of the BTS and
repeater site.
