Intro to GPS Apps
Where to get system status info

Navstar

U.S. Coast Guard Navigation Center

• Civilian Point of Contact for NAVSTAR GPS
• Web - http://www.navcen.uscg.mil/
• BBS - 703-313-5910
• Fax on Demand - 703-313-5931 or 5932
• Voice Recording - 703-313-5907
• WWV Recording - 303-499-7111 or by radio on 2.5, 5, 10, 15 and 20 MHz

Glonass

Russian Space Forces' Coordinational Scientific Information Center

• Web - http://mx.iki.rssi.ru/SFCSIC/SFCSIC_main.html

Both Systems

Earth Viewer

Rendered views of the earth based on current positions of Navstar and Glonass satellites thanks to John Walker at Fourmilab