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Integrating GSP-1620 Modems into OEM Products
80-99208-1 Rev. D 7-37
Icing/Freezing Rain/Snow
Any ice or freezing rain on the radome of the ODU will cause
degraded performance. Steps must be taken to ensure that ice
formation is kept to a minimum on the ODU.
Globalstar frequencies are attenuated by wet ice and snow
and OEMs must make provisions (such as installing the
antenna on a pole) to prevent snow buildup on the antenna.
Wet ice/snow must be restricted to a maximum thickness of
20 centimeters (8 inches)
by suitably mounting the antenna
(see Mounting Antennas at the Field Site on page 7-27).
Altitude
Operational
The DRA operates at standard atmospheric pressure
altitudes between 0 and 15,000 meters (50,000 feet).
Non-Operational
The DRA operates as specified after storage at pressure
altitudes ranging from 0 to 15,000 meters (50,000 feet).
Vibration
Operational - Random
The DRA operates as specified during exposure to the random
vibration spectrum defined in Figure 7-11.
Non-Operational - Random
The DRA operates as specified after exposure to the random
vibration spectrum defined in Figure 7-11.