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3 Installation 

 

ID No: 161692 

PRELIMINARY 

Page 23

 

 
The Node C’s antenna connectors are 7/16 female (N female is an option). All 
connectors are located at the bottom of the cabinet. An operator should refer to the 
cable connectors manufacturer’s documentation for best mating procedures. 
Furthermore, the bending radius of the antenna cables should be maintained at all 
times. 
 
There are several issues to be considered when selecting the cable and antenna 
types. 

•  Smaller diameter cables are less expensive and easier to install but have 

worse performance. 

•  Highly directional antennas with good front-back-ratios (40 dB is typical) are 

recommended because they improve isolation and cell site selectivity. 

 

Tighten the 7/16 (or N) connectors ONLY by hand. The use of pliers may 
cause damage to the connector and impair the performance of the Node C.  

 

 

 

 
The Interface Unit and the Node C are connected via a cable bridge. The bridge 
ports 12V, 28V, ground, USB, and RS232 between the two units as well as the 
general alarming and signalling. It is also the interconnection and intercommunication 
bus between the units. 
 

Coverage antenna (to mobile) 

Donor antenna (to

 

base station) 

Primary 

Diversity