User's Manual

D EKOLINK W IRELESS L TD . C OMPACT B I -D IRECTIONAL A MPLIFIER D EKO 3178B P RODUCT M ANUAL
Pub. 300TC80031 Rev. 1.55 Proprietary Data Page 11
2
22
2 SITE AND INSTALLATIO
SITE AND INSTALLATIOSITE AND INSTALLATIO
SITE AND INSTALLATION REQUIREMENTS
N REQUIREMENTSN REQUIREMENTS
N REQUIREMENTS
This section describes the power, antenna and site requirements for the Dual Band BDA
installation.
2.1 G ROUNDING W IRES R EQUIREMENTS
Requirements for grounding wires
• Protective grounding conductor - should be aluminum with cross-section 10AWG.
• Lug of the protective grounding conductor - should be aluminum
• Washers and screw - should be high Cr stainless steel, or 12% Cr stainless steel, or
Cr on, Ni on steel, tin on steel
2.2 A NTENNA R EQUIREMENTS
2.2.1 Base (Donor) Antenna
The Base (Donor) antenna is usually installed outdoors and is either a directional
antenna such as a Yagi or a Panel antenna.
Donor Antenna specifications:
• Yagi type or similar – 10 to 15 dBi gain, very sharp beam pointed to the BTS.
• Cable and jumper loss is at least 2dB.
• The required Base signals should be the dominant signals; at least 6 dB higher
power than other signals.
• Example of antenna's typical specifications:
Gain: 8 dBd (=10 dBi)
VSWR: < 1:5:1
Impedance: 50 ohm
2.2.2 Mobile (Service) Antenna
The Mobile antenna is installed indoors.
Note: Before installing the Mobile antenna, see FCC regulations for information
regarding recommended distances between the antennas and populated areas.
The following describes the requirements for an omni-directional mobile used for indoor
applications.
Specifications:
• Omni directional antenna with a 0 to 2 dBi typical gain, or wide beam with up to
3dBi gain.
• Example of omni-directional antenna specifications:
Gain: 0 to 2 dBi
VSWR: < 2:1
Impedance: 50 ohm