GPS

GPS-based universal clock generator

http://ve2zaz.net/GPS_Std/Downloads/VE2ZAZ_GPS_Derived_Std_QEX_09_10_2006.pdf

http://www.qsl.net/zl1bpu/MICRO/GPSCLOCK/

 GPS LCD Display Project for NMEA protocol

http://www.ke4nyv.com/gpslcd.htm

 GPS LCD Display Project for TSIP protocol

                                                                                                                                http://www.ko4bb.com/Timing/GPSMonitor/#[5]