Antenna Signal Requirements; Table 10: Maximum Cable Lengths For Saf9704 Antenna - NAL RESEARCH CORPORATION QUICKSILVER QS-100 User Manual

Table 10: Maximum Cable Lengths for SAF9704 Antenna

Coaxial Cable Type
LMR-195
LMR-240
LMR-400
LMR-600
Cable insertion loss ≤ 0.6 dB (with connectors) required.
Table assumes max connector loss = 0.25 dB each; cable loss = 0.1 dB.
7.4.4 A
NTENNA
Although the Quicksilver's receiver can link to the Iridium satellites when the antenna is
partially blocked (near buildings, in a room next to a window, etc.), the antennas must have a
clear view of the sky to minimize acquisition time, provide better data throughput, and reduce
power consumption.
Line of sight to satellite:
 Radio antenna must have a clear, unobstructed view of the sky.
 Nearby tall buildings or similar structures, heavy foliage, mountains, etc., can degrade
performance if they block the signal between the Quicksilver and the satellite when the
satellite is at low elevation angles.
 The signal may be completely lost if the operator enters a building with the Quicksilver.
 If the signal is blocked by an obstacle, the user may be able to wait a few minutes until
another satellite passes overhead without relocating.
Data service disconnects:
 The most common cause of disconnects is a disruption in the line of sight between the
radio antenna and the satellite.
 International Maritime Satellite (INMARSAT) terminals, Global Star (GSAT) units, radar
devices, electrical substations, and broadcast stations may also cause disconnects.
Document Number: 451-19004-001C
Max Cable Length (ft)
0.7
1.0
1.9
2.9
S R
IGNAL EQUIREMENTS
Quicksilver QS-100 User Guide – Revision C
Max Cable Length (m)
0.2
0.3
0.6
0.9
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