ZXC10-BTS (V5.4) Installation Manual
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at the antenna terminal. Each of the unipolarization antennas should be
measured. The actual electrically controlled downdip of an antenna conforms to
network planning and two unipolarization antennas should have consistent
downdips. This is not required if it is not an electrically controlled antenna.
8. All antenna poles should be firmly installed and well grounded. All antenna
poles are required to be vertical to the ground and the vertical error should be
less than 2º.In particular, all antennas must be vertical to the ground. Check with
a line hammer to keep the vertical error less than 2º.
9. The receive/transmit horizontal interval of an omni antenna should be no less
than 3.5m.
10. An omni antenna should be at least 1.5m away from the tower while a
directional antenna should be at least 1m away from the tower.
11. The jacket top of an omni antenna should be level to a support or slightly higher
than the support top.
12. When an omni antenna is installed on a roof, the horizontal interval between the
omni antenna and antenna lightning arrester should be no less than 2.5m.
13. An omni antenna installed on a roof should avoid blind area.
14. Check the matching relationship of the main diversity antennas within the
sectors and the set top jumpers on the rack.
15. The diversity distance between two antennas within one sector refers to the
vertical distance between the parallel lines of the two antennas front surfaces. It
is not the distance between two antennas. Diversity distance is irrelevant to
bipolarization antenna. The diversity distance should be 3.5m for 800M system,
1.5m for 1.9G system, and 6.7m for 450M system.
16. The vertical interval between directional antennas within different sectors
installed on the same antenna support should be more than 0.6m.
17. When isolated from an antenna in G network, the vertical separation should be
more than 1m, and the horizontal separation should be more than 2m.
18. GPS antenna should be vertical, secure, in a position as low as possible, and
without barrier. The GPS spatial angle should be more than 90ºC.
