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Iridium Global Coverage to MHz band 66 Sats in low earth orbit
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Satellite Communications
● Inmarsat ● Iridium● Globalstar & Spot● Thuraya● Orbcomm
Images from http://www.gtc-usa.com/satphone/
INMARSATGlobal Coverage
Uplink1626.5 - 1660.5 MHz Downlink 1525.0 - 1559.0 MHz3 Sats High Earth Orbit
IridiumGlobal Coverage
1618.85 to 1626.5 MHz band66 Sats in low earth orbit
GLOBALSTAR (SPOT below)Partial Coverage as shown52 sats in low earth orbit
1610-1610.6 MHz
THURAYA2 satellites1626.5-1660.5 MHz
ORBCOMM29 Low Earth Orbit Satellites137 to 150 MHzData only services