Note: you will require the free Adobe Acrobat Reader to view the .pdf files.
Voltage Regulator Circuits
GPS, DGPS and Computer interconnection (.pdf)
Interconnection for two GPS, computer and autopilot.
This picture shows the connections between an Eagle 6 pin connector and a DE-9 serial port connector
Jim Bixby has designed a Homebrew Differential GPS Receiver. A full description of this receiver is available from http://home.san.rr.com/bix/
Rich Heineck also has a DGPS receiver, described at http://home1.gte.net/clseng/dgps_index.htm
Dave Martindale provided a description of An external antenna for the GPS-38, Magellan 2000, or Eagle Explorer (15K, May 7, 1997). An updated version of this article is for use with the newer low voltage antennas.
gpspatch.zip (11530 bytes) has a description and drawing for the construction of a simple patch antenna for GPS reception. This is from an article originally published in QST magazine (Oct 95) by Harold Ward, W1GE.
Adventures in Amplified GPS Antenna Construction (4263 bytes) by Chris Scott describes the construction of an amplified ("active") GPS antenna
gpsxdip.zip (3842 bytes) describes the constrution of a "crossed dipole" antenna for GPS. By Pete Webster (skyhook@wintermute.co.uk)
gpsinterface.zip describes an NMEA to RS-232 level converter using a Maxim MAX-232. By Andrew Bruno
