AXELL D-CSR 3302 US VHF REPEATER
PRODUCT DESCRIPTION AND US
ER’S MANUAL
© Axell Wireless Ltd
Doc PN 0034B-UM Rev. 2.1
7
Equation (1) - Max SERVICE antenna gain
Max SERVICE antenna gain (dBi) = 39.1
– (33dBm - # of antennas in dB – cable losses in dB).
For example:
No. of Antennas
Cable Losses
Max Allowed Antenna Gain
4
3
39.1 - (33-6-3) = 15.1dBi
1
3
39.1- (33-0-3) = 9.1dBi
10
3
39.1- (33-10-3) = 19.1dBi
Typical Antenna Types:
Indoor ¼ wave 1.8dBi beam width 360
o
Indoor Panel 3.3dBi beam width 180
o
Radiating Cable Typically < -50dBi
2.2.2.2 Recommended Splitters and Couplers
Axell Wireless can supply a comprehensive range of splitters and Couplers to aid the
installation of the internal DAS system. Typical specifications as below:
Splitter Part Number 90-851402
Frequency Band 120 - 240MHz
Split 2 way
Max Insertion Loss 0.3dB
Split Loss 3 dB
Coupler Part Numbers 90-852506
90-852510
Frequency Band 120 - 240MHz
120 - 240MHz
Coupling -6dB±1.0dB
-10dB±1.0dB
Max Mainline Loss 1.7dB
0.8dB
2.2.2.3 Installation Criteria
Determine the antenna installation configuration, according to the transmission
requirements and the installation site conditions.
Installation requirements:
An indoor antenna should be installed at a convenient location. It should be free of
metallic obstruction.
Install the Service Antenna at the designated height and tune it roughly toward the
Service coverage area.
