User's Manual Part 1

Local GPS (RF–GPS) Antenna Cabling
Jun 2004
1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU
DRAFT
3-11
Objective
This section contains general information on the Radio Frequency
Global Positioning System receiver (RF–GPS) antenna cabling. More
commonly referred to as Local GPS. Refer to Table 4-37 for installation
information.
Cable labels
The cable designations referenced to Table 3-1 in the “Overall Cabling
and Descriptions” area.
Cabling diagram
Figure 4-48 shows the Local GPS antenna connections.
Equipment needed
Table 3-8 contains a detailed description of the Local GPS Cabling.
Table 1-3 lists the tools needed.
Table 3-8: Cabling for Local GPS
Cable Qty. Part Number Description
J* 1
Receiver
SGRG4030
RF–GPS Cable,
1
/
2
–inch coaxial, length = 50 ft. Two male N–type
connectors, one end loose.
If lengths greater than 50 ft. are required, cable style and length should
be determined by site configurations. Maximum loss <4.5 dB @ 1575
MHz for all cabling and connections between the Local GPS antenna
and the frame.
1 CGDSGPSKITF
4NM50
Assembly, Receiver, RF–GPS with 50 ft cable
*An SMA to N adapter is required; otherwise, a smaller diameter cable must be made with an SMA connector
on one end, with a maximum loss of <4.5 dB.
3