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A GPS Receiver Based Frequency Standard:  (electronic circuit added 4/05)

Aisin-Seiki GPS-Receiver (Us$20 GPS):  (electronic circuit added 4/05)

Alternative Power Source for Magellan GPS Receivers:  (electronic circuit added 4/05)

AN-702: Build a Direction-Sensing Bidirectional Repeater:  National Semiconductor Application Note   (app note added 2/06)

AN996: Designing a Digital Compass using the PIC18f2520:  Microchip Application Note Published 8-Aug-05   (app note added 2/06)

Application for 1.575 GHz GPS with UPC8211TK :  Application Note California Eastern Laboratories Doc #960  (app note added 6/06)

Build a Direction-Sensing Bidirectional Repeater:  National Semiconductor Application Note   (app note added 2/06)

Compass Sensor:  (electronic circuit added 7/03)

Designing a Digital Compass using the PIC18f2520:  Microchip Application Note Published 8-Aug-05   (app note added 2/06)

Digital Compass Schematic:  (electronic circuit added 7/03)

Dinsmore 1490 Digital Compass:  (electronic circuit added 4/05)

Direction Finder System:  (electronic circuit added 7/03)

Electronic Compass Controller:  Eventually we all want to know just where our robot is, so we can choose an absolute direction. Usually this type of device is quite expensive. However to our rescue comes.... (added 2/07)

External Antenna for the GPS-38 Magellan 2000 or Eagle Explorer GPS Receivers:  (electronic circuit added 4/05)

Garmin Foretrex 101,201, Forerunner 101,201 to Serial DB9 cable schematic pinout:  (diagram added 2/07)

Garmin GPS Data Interconnect:  (electronic circuit added 4/05)

GPS Handheld:  Intersil Application Block Diagram  (app note added 6/06)

GPS LCD Display Project:  (electronic circuit added 4/05)

GPS Receiver (Gamin Eagle Etc) to PC Interface Cables:  (electronic circuit added 4/05)

GPS Receiver Based Frequency Standard:  (design added 8/03)

GPS Receiver Support Kit:  (electronic circuit added 4/05)

Home Brew Compass Sensor:  (electronic circuit added 4/05)

How to Construct Garmin GPS Receiver Interface Cables:  (electronic circuit added 4/05)

Inertial Navigation System uses Silicon Sensors:  09/16/04 EDN Design Ideas  /  (added 1/05)  A strap-down inertial-navigation system uses silicon sensors to measure displacement without entailing the bulk and expense of moving parts or GPS receivers. For example, a three-axis accelerometer and three angular-rate sensors can determine the position and velocity of a vehicle such as a robot or radio-controlled aircraft....

Low-Power IC Packs GPS Receivers (7/31/01) :  Application Note California Eastern Laboratories Doc #953  (app note added 6/06)

Mobile Aprs/GPS Tracking System:  (electronic circuit added 4/05)

Monitor Output from Motorola Oncore GPS Engine in Hp Z3801a in GPS Disciplined Oscillator:  (electronic circuit added 4/05)

Navigator 555a Radio Direction Finder (Rdf) Circuit Diagram:  (electronic circuit added 4/05)

Phase Shift Radio Direction Finder:  (circuit added 7/02)

The Aisin-Seiki GPS-Receiver (theUs$20 GPS):  (electronic circuit added 4/05)

Three Power Supplies for the Garmin GPS-20 Sensor Board:  (electronic circuit added 4/05)

U-Blox GPS receiver Board:  (electronic circuit added 4/05)

Ultra Low Noise Precision High Speed Op Amps:  Linear Technology LT1028(app note added 02/05)