Gps signal strength requirements – Symmetricom XLi IEEE 1588 User Manual

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XLi IEEE 1588 Clock

997-01510-03, Rev. C, 12/12/2006

Figure 3: L1 GPS Antenna - methods for cabling and mounting

GPS Signal Strength Requirements

Refer to

Figure 4:

The required gain at the GPS receiver’s ANTENNA connector is greater than 20 dB

and less than 36 dB. A 150 foot length of RG-59 coax cable of has a loss of 16-21 dB, which meets this
requirement. Abide by the minimum input gain requirements if using other cable types. Additionally, if
changing the antenna, abide by the 41 dB gain requirement. Other factors, such as radiation, coverage,