1. Satellite Communications ● Inmarsat ● Iridium ● Globalstar & Spot ● Thuraya ● Orbcomm Images from http://www.gtc-usa.com/satphone/

2. INMARSAT Global Coverage Uplink1626.5 - 1660.5 MHz Downlink 1525.0 - 1559.0 MHz 3 Sats High Earth Orbit

3. Iridium Global Coverage 1618.85 to 1626.5 MHz band 66 Sats in low earth orbit

4. GLOBALSTAR (SPOT below) Partial Coverage as shown 52 sats in low earth orbit 1610-1610.6 MHz

5. THURAYA 2 satellites 1626.5-1660.5 MHz

6. ORBCOMM 29 Low Earth Orbit Satellites 137 to 150 MHz Data only services