DIGIMINI EMEA/APAC/AUSTRALIA REPEATERS
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless
–
Coverage
Date: 11-Oct-15
www.cobham.com/wireless
Document number: 00030UMCD
Rev. 5.0
Page |
2-1
2 ANTENNA AND REPEATER INSTALLATION
REQUIREMENTS
This chapter provides information on the specifications of the donor and service antennas suitable for
operation with this repeater, on the installation requirements of the antennas and on the Repeater
installation site and cable requirements.
2.1 Base (Donor) Antenna Requirements
The Base (Donor) antenna is usually installed outdoors and is either a directional antenna such as a
Yagi or a Panel antenna.
2.1.1 Required Antenna Information
You will require the following antenna information
•
Antenna type and characteristics
•
Height
•
Length and type of coaxial cable required for connecting the Donor antenna to the Repeater and
the attenuation.
2.1.2 Donor Antenna specifications
•
Yagi type or similar – 8 to 13 dBi gain, very sharp beam pointed to the BTS.
•
Cable and jumper loss is at least 2dB.
•
Example of antenna's typical specifications:
Gain:
8 dBd (=10.1 dBi)
VSWR:
< 1:5:1
Impedance:
50 ohm
2.1.3 Installation Criteria
Installation requirements:
•
Select a location for the Donor antenna and verify that there is enough signal strength at that
location.
•
Install the Donor Antenna at the designated height.
•
The antenna should point to the direction of the base station for maximum input power.
•
Verify that the antenna is in the base stations line of sight (raise the antenna if necessary).
•
Install the donor antenna at a higher level (i.e. floor) than the mobile antenna.
•
Must be installed at a minimum distance of 20cm from any personnel within the area.
