16
LIGADO NETWORKS
MSATe INSTALLATION GUIDE
CABLE LENGTH
CABLE TYPE
6 m (20ft)
RG223/U
18 m (60 ft)
LMR240 (Equiv.)
45.7 m (150 ft)
LMR600 (Equiv.)
Table 5 - Antenna Cable Lengths and Types
Vibrations
The antennas (2 and 3-axis versions) are designed to meet the following
operating vibration levels in any of three perpendicular directions
measured at the mounting base of the radome i.e. at the flange of the
standard mounting pole described above:
Radome Vibration
1.05 Grms with the following spectral density
5-20 Hz………….0.02G2/Hz
20-150 Hz………. -3dB/octave
And further,
Single Frequency Vibration
5-10 Hz with amplitude 2.54mm
10-15 Hz with amplitude 0.76mm
15-25 Hz with amplitude 0.40mm
25-33 Hz with amplitude 0.23mm
Vibration levels in a typical installation are usually much less than the
above-mentioned values. It is, however, the responsibility of the installer
to verify that the cited levels are not exceeded in any mode of operation
of the vehicle/vessel. In case of abnormal vibration, typically at a
resonance frequency, measures must be taken in order to displace the
resonance frequency or to dampen the vibration amplitude.
