02/03 >>
Installation Conditions
Restrictions on the installation environment
1.
Do not install RTN 380H on a guyed tower.
2.
Even if the requirements for link reliability can be met and the equipment installation environment allows
equipment to run properly in any weather conditions (the sway angle and twist angle of towers and poles meet
requirements), use rooftop towers, thin mast towers, and common self-supporting towers (non-high towers)
with caution based on the local actual situations.
Restrictions on the installation on a rooftop upright pole
When installing RTN 380H on a rooftop upright pole, ensure that:
1.
Antennas with a diameter of 0.3 m or less are used. RTN 380H can be installed on a rooftop upright pole only on
the last microwave hop at the network tail.
2.
A mono-rooftop mast is supported by three stress support bars. The angle between the stress support bars is 90º
or 120º. This ensures that the mast can resist 28 m/s wind (force 10 wind) and do not sway or twist in the wind.
3.
Only one microwave antenna is installed on one pole.
4.
A pole is supported by two side support bars to ensure that the pole does not sway or twist in the wind.
5.
A pole is not higher than 6 m.
6.
An antenna is not installed on the top of a pole. An antenna should be installed at a lower position that is close to
the support point. Antenna mounting brackets are fastened.
Restrictions on the installation on a thick mast tower
When installing RTN 380H on a thick mast tower, ensure that:
1.
Antennas with a diameter of 0.3 m or less are used.
2.
A pole is installed securely. It can resist 28 m/s wind (force 10 wind) and do not sway or twist in the wind.
3.
Antenna mounting brackets are fastened.
Restrictions on the installation on a self-supporting tower (high tower in the central
equipment room)
When installing RTN 380H on a self-supporting tower, ensure that:
1.
Antennas with a diameter of 0.3 m or less are used.
2.
An antenna is installed at a position that is lower than 50% of the tower height. The twist angle of the antenna is
less than 0.69º. For example, if a tower is 60 m high, an antenna should be installed at a position lower than 30 m.
3.
The tower is not overloaded.
4.
A pole is installed securely. It can resist 28 m/s wind (force 10 wind) and do not sway or twist in the wind.
5.
Antenna mounting brackets are fastened.
Restrictions on the installation on the wall, chimney, or concrete tower
When installing RTN 380H on the wall, chimney, or concrete tower, ensure that:
1.
Antennas with a diameter of 0.6 m or less are used.
2.
Use the wall-mounting mode. A pole can resist 28 m/s wind (force 10 wind) and do not sway or twist in the wind.
3.
Antenna mounting brackets are fastened.
Other restrictions
Do not install RTN 380H and antennas of wireless equipment on the same pole.
