User Manual

AXELL CSR 3604-3304 UHF REPEATER

PRODUCT DESCRIPTION AND USER’S MANUAL

2 Antenna Specifications and Installation

Criteria

WARNING!!!

The installer is held accountable for implementing the rules

required for deployment.

Good engineering practice must be used to avoid interference.

Output power should be reduced to solve any IMD interference

issues.

This chapter provides information on the specifications of the donor and service antennas

suitable for operation with this repeater, and on the installation requirements of the

antennas.

NOTE: The Donor and Mobile antennas can be positioned and installed (without connection

to the Repeater) at any time either before or after mounting and grounding the Repeater.

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.

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 specification

 Very sharp beam pointed to the BTS.

 Minimum cable and jumper loss = 2dB.

Equation (2) - Max DONOR antenna gain

Max DONOR antenna gain (dBi) = 39.1 – (27dBm - cable losses in dB).

For example:

No. of Antennas

Cable Losses

Max Allowed Antenna Gain

39.1 - (27-2) = 14.1dBi

Typical Antenna Types:

 4 element yagi 8.8dBi beam width 90

 6 element yagi 10.3dBi beam width 64