Product specifications

Specification Summary
A-2 80-99240-1 Rev. D
Certification FCC
CE
Modem Environmental Conditions Operating:
Storage:
Relative Humidity:
-30 °C to +60 °C
-40 °C to +85 °C
5% to 95% (under 40 °C)
The data modem is sensitive to very high ambient
noise levels. Steps must be taken to ensure that the
noise level at the modem does not exceed 110 dB OSPL
(Overall Sound Pressure Level).
Shock mounts must be used when the environment
includes excessive vibration. The GSP-1620 modem
will meet or exceed all operational vibration
requirements defined in Table 6-1 when E-A-R
damping feet (MF-100-UC04-H, black) are used as
shock mounts.
Antenna Environmental Conditions Operating/Storage:
Relative Humidity:
-40 °C to +85 °C
5% to 100% (under 40 °C)
Signal fading associated with trees, buildings, and
other obstacles that prevent a clear line-of-sight to the
satellite can cause degraded operation.
Any ice or freezing rain on the radome of the Outdoor
Unit (ODU) will cause degraded performance. Steps
must be taken to ensure that ice formation is kept to a
minimum on the ODU.
Supporting Products GSP-1620 Modem Integrators Kit (MIK)
Globalstar User Terminal Program Support Tool
(UTPST) (modem provisioning tool)
Table A-1. Specification Summary GSP-1620 Modem (continued)
Table A-2. Specification Summary Dielectric Resonator Antenna (DRA)
Parameter TX Specification RX Specification
Frequency Range (MHz) 1610.0-1626.5 2483.5-2500.0
Polarization LHCP LHCP
VSWR (50 ohm) <2.0:1 <2.0:1
Isolation (TXRX) (dB) >40 >0
Maximum Gain
(0°<θ<80°) (dBic) [1]
< 6.5