Satellite phone Iridium 9500 Manufacturer Brand Motorola Inc. Year 1998–2001 Category Telephony - wire and wireless Satellite phone Iridium 9500; Motorola Inc. ex Telephony Motorola Inc. ex Satellite phone Iridium 9500 Sammlung: Telekom Historik Bochum Technical Specifications Power type and voltage Batteries addl. power jack Akku: 3.6; Extern: 12 Volt Material Plastics from Radiomuseum.org Model: Satellite phone Iridium 9500 - Motorola Inc. ex Galvin Mfg.Co Shape Very small Portable or Pocket-Set 8 inch. Dimensions 68 x 195 x 60 mm . 2.7 x 7.7 x 2.4 inch Notes Battery : Motorola 3.6 V Lithium Ion 1200 mAh SNN5324B Usable on 12V or AC adapter The former Iridium provided phones from two vendors, Kyocera and Motorola. The Motorola 9500 phone is a design from the first commercial phase of Iridium, whereas the 9575 model is the current version of the handset and was released in 2011. The Iridium system requires 66 active satellites in orbit to complete its constellation and spare satellites are kept in-orbit to serve in case of failure. The satellites are in six polar low Earth orbital planes at a height of approximately 485 miles Satellites communicate with neighboring satellites via Ka band intersatellite links to relay communications to and from ground stations. Most of these satellites were launched in the late 1990s before the company went through bankruptcy. Since the bankruptcy, only seven additional satellites have been launched but an updated constellation of 66 satellites called Iridium NEXT is currently being developed and is planned for launch between 2015 and 2017 on SpaceX Falcon 9launch vehicles from Vandenberg AFB Space Launch Complex 3 in California.