GPS info - NMEA serial data and 1pps output

I have added a write up  regarding GPS boards for extracting NMEA serial data for APRS use  and also extra 1pps (1 Pulse Per Second) signal for use with providing GPS locking of 10 MHz Reference signal  (or other Reference frequencies) for providing an accurate and stable source, typically for locking a Local Oscillator source for a microwave transverter kit, or for other transceivers used  for doing weak signal digital modes, such as WSPR and WSJT.

http://www.qsl.net/vk2kfj/gps.html