FEATURE ITEMS

• Which GPS should I buy?  Click HERE
• My First GPS for Hiking:  What features does it need? (15 JAN 02)
• My First GPS for Automobile Navigation:  What features does it need? (15 JAN 02)
• GeoCaching and GeoGraphing: New HOBBIES for GPS owners (Links)
• HANDHELD Computers make platform for GPS Receiver using new "sleeves" by Dale
• G7ToWin-Edit data from Magellan/Garmin Receivers, Display on StreetAtlas(AUG02)
• GPS Car Navigators: How good are the maps? What are the limitations? (10 JUL 02)
• GPS Mapper permits users to edit Garmin MapSource Maps (Finally!) (22 JUN 02)
• Garmin BlueCharts with Comparisons to Other Nautical Charts (15 JAN 02)
• Garmin eTrex Legend/Vista, feature rich, big map memory,WAAS corrections(JUL02)
• Garmin GPSmap 76/76S (Compass/Baro) Full Featured WAAS Receiver (15 JUL 02)
• Garmin GPSmap 176 Marine GPS also operates  in car applications (19 AUG 01)
• Garmin GPS-V offers AUTOMATIC routing in a small handheld (21 SEP 01)
• Garmin iQue 3600 is new Palm Pilot Based GPS plus PDA system>Preview(9Jan03)
• Garmin MapSource Map Viewer, View R&R, Topo, and MetroGuide Maps (Link)
• Garmin MetroGuide USA (II) and comparisons to CityNavigator/CitySelect(JAN02)
• Garmin's RINO combination GPS and RADIO sends your location to others(12NOV02)
• Garmin StreetPilot III ColorMap: has AUTOMATIC Routing and VOICE (28 MAR 01)
• GPS Users give their comments on their favorite new GPS receiver (Various)
• iPaq GPS using NavMan Sleeve and Maptech Topo maps by Dale Depriest (26SEP02)
• Lowrance iFinder GPS has 9999 trackpoints and 99 routepoint capability (29MAY02)
• Magellan Meridian Gold-GPS Mapping full featured at reasonable price (5 DEC 02)
• Magellan Platinum Mapping Receiver-Compass and Altimeter Review (4DEC02)
• Magellan SporTrak Pro (A remarkably accurate small receiver)Review (28 MAY 02)
• Magellan Topo Map for Mgln330-Technology to Display Topo/Profile Data (AUG01)
• MapConnection's eTopo offers Canadian Topo maps -by Lloyd Bowles (5 JUN 02)
• MountainScope 3-D+Topo Maps uses FAA Flight Data, shows Obstructions to Flight
• Navman GPS Sleeve iPaq- Review including mapping software by Depriest (15 OCT 02)
• NavMan's iPaq GPS-SmartSt Professional SW with Navman GPS by Dale (22 NOV 02)
• Pioneer NAV-SYS900DVD-large screen and good nav features-by Mohabir (2SEP02)
• USAPhotoMaps, Auto Download of Aerial/Topo Images at Select Waypoint(9 DEC 02) 

• OLDER GPS Product Review Archives, Discontinued, Obsolete, Obsolescent GPSRs
• Alpine Automobile Navigation System:  Raja Bhat describes his new system (JUL00)
• Aviation GPS Hand-held Comparisons and Reviews by AVweb (Link)
• Comparison of Delorme Topo USA 2.0 with Garmin USA Topo map CD (28 AUG 99)
• Comparison of Features of Garmin G-12Map, G-III+, and Lowrance GM100 (7SEP99)
• Comparison of Features of eMap, StreetPilot, and G-III+ by Joel Garza (18 JAN 02)
• Comparison of Features of Garmin eMap, Magellan Map-330, and G-III+ (21 DEC 00)
• Comparisons of Garmin and Delorme Map Accuracy (23 FEB 00)
• Comparison of G-III+Atlantic, G-III International , and Lowrance (WorldMap)
• Comparison of Various Garmin and Lowrance CD Maps:80+ Screen Photos(MAY00)
• Comparison of Various Vendor Maps -Plus Their GPS Connectability (26 NOV 99)
• Fugawi Product Review -by G Clark (25 JUN 00)
• Garmin Base Maps: What unit has which and how are they different? (29 OCT 99)
• Garmin eMap (Electronic Map) GPS receiver-Mapping GPS with Great Maps (2SEP00)
• Garmin eTrex Summit has built in compass and altitude profiling (17OCT00)
• Garmin G-III+ Compared to the G-III -Requires Acrobat Reader (Link)
• Garmin G-III+ Product Review -New GPS has user uploadable maps (9 OCT 99)
• Garmin G-12Map GPS-A G-III+  with a audio alarm in a G-12XL case (9SEPT99)
• Garmin DGPS-53 All-in-One Differential Marine Receiver (29 NOV 00)
• Garmin GPSmap 162 Marine GPS has WAAS and Fishing Hot Spots (23 APR 01)
• Garmin MapSource Maps and GPS Receivers in Alaska and Canada Cruise (1 OCT 00)
• Garmin MapSource WorldMap Appeared Quite Accurate in Mexico (31 MAR 02)
• Garmin MapSource MetroGuide Europe reviewed by Anders Persson (Link)
• Garmin MapSource Uploadable maps: USA and European Coverage info (22 JUN 00)
• Garmin's NavTalk combo GPS/CellPhone product review -We can TALK on our GPS
• Garmin StreetPilot and StreetPilot ColorMap Mapping GPS -Review (16 JUN 00)
• Garmin USA Topo CDs, A Short Review and Examples (6 MAY 00)
• GPS Receiver Accuracy under tree cover for a few Garmin and Magellan units(Link)
• GPS External Amplified Antennas-Comparison of several common models (12OCT98)
• Holux GM100 Mapping GPS Receiver, Available in Spain,  By Carlos Puch (1 APR 01)
• Infiniti QX4 Navigation System manufactured by Xanav by Phil Sherrod
• Lexus and BMW (year 2000) Auto Navigation System comments by Bob Aluska
• Lowrance GM-100 Receiver - Has user uploadable maps (26 MAR 00)
• Lowrance GM-100 Screen Photos as Compared to the Garmin G-III+ (24 MAR 00)
• Magellan 315 GPS -Compact 12 channel  receiver has lots of features (6SEPT99)
• Magellan "Companion"-Palm Pilot V GPS works well,  has lots of features (26OCT00)
• Magellan 330 Mapping GPS has  full featured Mapping system, low price (12NOV00)
• MapTech Terrain Navigator 3-D maps Compared to Delorme Topo USA 3.0(AUG01)
• MapTech Offshore Navigator Examples and Comparison to Ozi Explorer (29 AUG 01)
• Maps uploadable to GPS: Where can I get third party maps to upload into my GPS?
• Maps: How can I scan my own maps and then upload them into my GPS? (5 DEC 01)
• NMEA Sentence Compatibility with Hardware and Software (28 SEP 98)
• Ozi Explorer and Fugawi Scanned/Map Software -Compared (17 FEB 99)
• OziExplorer has ability to upload USER MAPS/MAP FEATURES to GM-100 (25 JAN 99)
• Recreational Grade GPS Receivers and Digital Topo Software for PDAs -by Fryar
• Route 66: European GPS ready Mapping Program has  Automatic Route Generation
• StreetFinder Deluxe (Rand McNally) 2000 -Software Review by Dale Depriest (Link)
• Topo! Mapping Software -Review by Dale Depriest (31 JUL 98)

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• TOPO! GPS, TOPO!, and TrailSmart Products from Wildflower -by Straka (5 JAN 99)
• Tree Cover with your GPS-Do I need an amplified external antenna or will my GPS work without one? (Link)
• TRI-M Big Brother Remote Active Re-radiating Antenna -Review (31 JAN 99)
• VDO Dayton MS5000: Automatic address-to-address Car Navigation has great display (Draft)

• Battery-drain measurements for several GPS receivers (22 MAR 02)
• Blue Charts and G-Charts  -What is the Difference? (19 NOV 01)
• Batteries -Should I use Alkaline, Lithium, NiCad, or NiMH batteries in my GPS? (12 NOV 00)
• Batteries: NiMH are probably the lowest cost long term solution for GPS use. (Link)
• Cars which may require external GPS antenna due to metallization in windscreen (Link)
• Centimeter GPS Accuracy: What equipment can I use to get really precise position? (Link)
• Comparisons of  Garmin Screen Sizes, Pixels, and Resolution -by Matthew Birch (24 MAY 01)
• EOW fix for older model Garmin GPS Receivers -Quick fix to get your G45/G40/G38 working again
• Garmin Active Powered Antennas - A look at the different models (4 JAN 98)
• Garmin Data Cables: What are the Pinouts? (3 JUL 01)
• Garmin's diagnostic features - Mess with these and you may lose your data -by Dale (4 JAN 99)
• Garmin FAQs Including a LINK to the Garmin FAQ site
• Garmin Firmware Archives, John Perry's cache of older GPS firmware (Link)
• Garmin Firmware Revisions, Features, and Update/Upgrade costs and policy (Allory Deiss)
• Garmin GPS Receiver Feature Comparisons with comments by Dale Depriest updated frequently
• Garmin G-III PLUS (and others) shut off when I "hit a bump":  How can I fix this problem (1 MAR 00)
• Garmin Icons for G-III+ in Graphic Form and Icon Number (Link)
• Garmin Internal Datum Storage -What Datum is output in GRMN and NMEA modes? (18 JUL 00)
• Garmin's official GPS Receiver MANUALS - Download yours from here (Link)
• Garmin GPS Receiver Manual:  Dale's version tells you more in simple language. (Link)
• Garmin SP-III and G-V: How do I use MANUALLY generated routes: Courtesy GPS-Garmin.nl
• Garmin Signal Strength Bars -What do they tell me? (12 JUL 99)
• Garmin Simulator Mode -How to Initialize the Starting Point in the Garmin G-III and III+? (3 JAN 99)
• Garmin's WorldWide Warranty Policy -Explained (20 JAN 99)
• Garmin WAAS  -Steps a Receiver Performs to Acquire the Geo-Stationary Satellites (23 JUL 02)
• Garmin Waypoints -Why don't they increment by filling in the holes in a sequence? (15 JUL 98)
• Garmin Waypoint Averaging -What is it and how does it work? (23 MAY 98)
• GPS Antenna and Sensitivity Comparisons How NOT to make the wrong conclusions. (4 JUL 98)
• GPS Feature Wish List All GPS Manufacturer's take note! -Maintained by Dale Depriest
• GPS locks Quickly when my car is stopped and takes much longer when I am moving -Why? (5 AUG 99)
• GPS Maps:  The maps in my GPS are not accurate.  Why is that?  (3 JAN 02)
• GPS signal strength bars -What do they mean when they are "hollow" or all black? (12 JUL 99)
• GPS won't lock, Signals look OK -What's wrong? (4 JUL 98)
• Lowrance GPS MANUALS - Download yours here (Link)
• MAC computers and GPS receivers -How can I get them to communicate? (DEC 01)
• Magellan Firmware Revisions, Features, and Updates (Allory Deiss)
• Magellan Firmware Revisions, Features, and Updates (Link)
• Magellan GPS Manuals:  Where can I find them?Older units, Aussie Mgln (Links)
• Magellan GPS-315 & SporTrak compared to the Garmin G-12, Venture, & GPS-72 (3 OCT 02)
• Magellan 330:  How do I update the software in my M330 GPS?  (8 OCT 00)
• Magellan Undocumented Control Codes and Data Explanations (2 JUN 02)
• Memory Backup Battery problems in some Garmin GPS receivers (4 JUL 98)
• MEMORY -How much do I need in my new GPS receiver (9 JUL 02)
• MGRS -Which handheld GPS receivers have MGRS? (5 JUL 02)
• MicroSoft AutoRoute (among other MS mapping programs) can't find my GPS.  What do I do? (Link)
• Multipath: My GPS position (or speed) "jump around" and are not stable at times.  WHY?
• Multiple Waypoint Messaging -Explained (4 APR 99)
• Nearest 9 Waypoints on Garmin GPS Units -Details (29 MAY 98)
• OnStar> Where is the GPS unit and how to I tap the NMEA signals? by Pete Carter(Link) 
• Precision Mapping Streets Mapping Software
• Print Garmin MetroGuide generated routes:  How do I do it?  (29 JUN 02)
• RAIN,  CLOUDS, fog, and snow:  Do they affect my GPS signals? (28 DEC 01)
• ROAD LOCK -Which GPS receivers have this feature? (10 JUL 02)
• Routes and Tracks:  What is the difference? (16 MAR 00)
• USA purchased GPS receivers Overseas -Can I buy in USA and use my GPS Overseas? (20 JUN 02)
• WAAS Operation:  Your Questions Answered (3 JAN 02)
• WAAS Tutorial by Dale Depriest (4 JAN 02)
• Warm Start/Cold Start? What does this mean?
• WaterProofNess of Garmin Receivers -Garmin Engineering (MAY 97)
• WaterProofNess of Lowrance Receivers -Lowrance Engineering (14 JUL 98)
• What Happens when Diagnostics Page wipes out all Garmin Stored Data (23 MAY 98)
• Which GPS receivers can automatically compute ACREAGE when I walk a closed loop?(20 JUN 02)
• Windows XP -How do I get Win XP to recognize my GPS? (16 MAY 02)
• Why Would I want a GPS Receiver and What Could I Do With It? (Link)
• Why Buy a 12 channel GPS receiver? Why not a cheaper 1 or 2 channel scanner? (Link)

• Address or Lon/Lat -Put in and get Map showing location using MapQuest or TIGER maps
• Airports over the World: Where can I find the lon/lat for the World's Airports? (Link)
• Bitmaps and Vector Maps:  What is the difference? Dale Depriest tells us all (Link)
• Coast Guard Lights List for the USA:  Where can I find lists of lights, buoys,  etc. (Link)
• Convert Datums, File Formats, Tracks to Routes, using GeoConv software (Link)
• Convert LORAN to GPS lon/lat coordinates using this program (Link)
• Convert RASTER maps to VECTOR maps:  Is there any software to do that? (Link)
• Convert between STATE PLANE,  UTM, and Lat/Long courtesy of US Army (Link)
• Convert between State Plane, UTM, and Lat/Long plus other coordinate systems (Link)
• Datums: A Brief Description (14 JUN 99)
• Datums: How much error in my position if I fail to use the correct datum with my Lat/Long reading? (Link)
• Datums: My TOPO (or other map) program does not accurately position my location  on the map.  (Link)
• Datums: New Zealand Geodetic 2000 (LINZ) datum -Information About NZ's new datum (Link)
• Datums: Sam Wormley's list of links to information on DATUMS (1 DEC 98)
• Degrees, Minutes and Seconds> Where did the terms originate? by Sam Wormley (22Nov02)
• DGPS datum is NAD-83 and not WGS-84 as used internally by the GPS - Will this DGPS signal be accurate?
• DRG Maps -Digital Raster Graphic Maps -What are they anyway? (Link)
• Don Bartlett's GPS and UTM Tutorial Site
• Earth:  According to WGS-84 (Courtesy of Sigurd Humerfelt: Link)
• Garmin MapSource (MetroGuide and USA Topo) -Data Source (23 OCT 00)
• Garmin StreetPilot MetroGuide Database descriptions (Link)
• Garmin City Database Details (1 JUN 98)
• Getty Thesaurus of City Names - Put in a City Name, get back a longitude/latitude
• Geodetic Survey Markers (Worldwide Listings) -How can I find one near where I am? (1 FEB 01)
• GPSy's Internet Digital Map listings: An extensive list of digital maps available on the Internet (Link)
• Grid Conversions, Distance Formulas, Coordinate Transformations, and Map Translation Software (Links)
• Longitude/Latitude Formulas for GPS and Navigation (Link)
• Mercator Projections -Norris Weimer tells us about the Projections and the MAN (Link)
• MapRef Website -Datum conversions, Projections, Map References for EUROPE
• Maps From Around the World -Includes Maps from the CIA (Links)
• Maps: Supposedly the largest selection of maps in the world (Link) (click on MAP)
• Miscellaneous GPS Related Software Links -Courtesy of HEI
• Navigation BEFORE GPS -How did we do it? (Link)
• New Zealand TopomapPro Provides Topo and Aerial Photo GPS maps (Link)
• NIMA publications on datums,  geodesy, and geophysics (Link)
• Nima2GPS - Convert information from NIMA´s GEOnet Names Server into waypoint files (Link)
• NGS Survey Marker Accuracy -Texts by Dave Doyle and Ed McKay (NGS)
• NMEA Datums as regard to use with Ozi Explorer and Garmin Receivers (21 FEB 02)
• OSGB -What is it? How do I set up my GPS? Convert to Lat/Long? Where to buy UK maps? (Link)
• Place, -Enter and Get Waypoint -Sam Wormley's Waypoint Site (Link)
• Prime Meridian -History of its Past and Present at Greenwich (1 NOV 99)
• RINEX -The National Geodetic Survey's Receiver Independent Exchange Format -What is it? (Link)
• Sunrise/Sunset/Moonrise/Moonset -Give your location and find out for your area (Link)
• TatukGIS Develops and Licenses GIS Software Products with Visual Basic and Visual C++ (Link)
• TatukGIS Datum and Projection Conversion Calculator (free download) -Instructions (20 MAY 02)
• TOPO and 3-D Maps to download to your GPS or Laptop Computer (Links)
• Topo Maps, aerial photos, and other GIS info for USA Free, Courtesy Doyle's GIS (Link)
• State Plane Coordinate Systems and their use with Ozi Explorer -by Jim Horton
• Universal TIME -What has it been doing throughout the years? How does it compare to GPS time? (Link)
• User Grids and Datums in Hand-Held Receivers -A Small Collection (4 FEB 99)
• USGS DRG Alaska maps on CD for sale by GPS Trails
• USGS DRG -Download Individual 7 1/2' Topo Maps (Free) with Automatic Registering Info Included (Link)
• USGS DRG Topographical Maps -Where to get them -Other Sources (Link)
• UTM: A Brief Description (4 JUL 98)
• UTM:  Which UTM Zone am I in? (Map)
• UTM and Datum Information Web Sites (Links)
• UTM and MGRS: What are the differences?  How do I convert from one to the other?
• View your home (probably) from the Russian Spin-4 Satellite or from a USGS Aerial view
• Waypoints:  A very extensive worldwide listing of Waypoint LISTS (Links)

• Almanac and Ephemeris Data -What is it? (4 JUL 98)
• Elementary Tutorial on How Does GPS Work -Acme Services Presentation (Link)
• Dale DePriest "How Does GPS Work?" from his Garmin Reference Manual (Link)
• DGPS (Differential GPS) -What is it and how does it make a GPS receiver more accurate? (Link)
• DGPS (Poor Man's) -Why can't I use two regular GPS receivers to eliminate SA error? (15 AUG 98)
• DOP Demonstration site by Norris Weimer - How SV Geometry Affects GPS Accuracy
• DOP -Dilution Of Precision and HDOP and VDOP - What are they? (3 JUL 98)
• EPE -Estimated Probable Error -What is it? (23 MAY 98)
• FOM -Figure of Merit -What is it? (29 MAY 98)
• GPS - A New Constellation - Smithsonian Institution's "LOW TECH" "How Does GPS Work" Website
• GPS operation and Tutorial book Recommended by Bill Straka (9 NOV 98)
• GPS Bearing to Next Waypoint versus Direction of Travel - Explanation (10 OCT 98)
• GPS's Clock Function and More Rollover Trivia (23 MAY 98)
• GPS "Compass" reads WRONG" -Why is that? (10 OCT 98)
• GPS Future:  What improvements are coming our way in the next 3, 5, 10 years? Answers here
• GPS Navigation Satellite message format and protocol details, maintained by Ed Weston (Link)
• GPS Precision Timekeeping:  Where can I get information and low cost equipment? (Link)
• GPS Primer -Simple explanation of how the GPS system works (Link)
• GPS Receiver -How does it get a LOCK? -Tom Clark tells us (17 JUL 98)
• GPS Receivers -Where can I find block diagrams,  schematics?  How about  descriptions to study?
• GPS Signal Specification Document -U. S. Coast Guard (Link)
• GPS Signal Tutorial -GPS Spread Spectrum and how carrier phase measurements are made (12 DEC 98)
• GPS Tutor, The - A definitive tutorial of many facets of GPS receivers and satellite signals (Link)
• LAAS:  What is it and how does it work? (2 SEP 00)
• Learn Nuts and Bolts of GPS from a Power Point Presentation by Cass Lewart (1 JUN 02)
• NavStar User Equipment Introduction -Technical Tutorial on GPS technology [*.pdf] (Link)
• NavStar Joint Program Office - Official Website of "the keepers of the GPS System" (Link)
• Post Processing -Can I Post Process my NMEA data to achieve higher accuracy? (15 AUG 98)
• Post Processing - Is there a HANDHELD GPS RECEIVER which can do POST PROCESSING?
• Relativity: How the motion of Earth and the GPS Satellites affect accuracy?>>(Deeper Theory)
• Russian GLONASS -Official Russian Defense Ministry Site (Link)
• Satellites- NASA java program lets you see a 3D view of 500+ and click on each for identification
• Satellites -Where are they? Can I see them? Where do I look? (Link)
• Spread Spectrum Transmission -Frequency hopping, Direct Sequence, and CDMA -What are they? (Link)
• Trimble's Excellent "How GPS Works" (Link):
• WAAS and its Relation to Enabled Hand-Held GPS Receivers (24 MAR 01)
• WAAS:  What is it and how does it work? (2 SEP 00)

• Airliners and GPS - Is it Safe for me to use my GPS on a Passenger Airliner?
• Antenna Pattern of your GPS antenna -Measure and Plot yours using this program. (Link)
• Antennas for GPS Receivers- Patch and Helix typical Specification Sheets (10Oct02)
• Antenna for GPS Receivers- A Turnstile Antenna you can build, from ARRL (4Nov02)
• Averaging Waypoints -How long do I have to average to improve accuracy of my GPS fix?
• Batteries: Technical information on Lithium, Alkaline,  Mn and other battery types (Link)
• Airlines which Approve or Disapprove GPS use during flights (15 MAR 01)
• Boeing Service Letter -Consumer electronic equipment use on Boeing Aircraft (3 MAR 01)
• Buoy Database:  You can find links to various marine Buoy Databases via this link
• Coastline Profile Extractor for use with OziExplorer and GPSUtility (Link)
• Dale DePriest's Index of GPS Information -A must see section of our website (Link)
• DGPS Services -Worldwide Listing of Available Services, Additional input Solicited (5Nov02)
• Error Measures: 1 sigma, 2 sigma, 3 sigma, 50%CEP, 2DRMS, 95% confidence? What does this mean?
• European Global Navigation Satellite System, Go-Ahead Announce (18 JUN 98)
• FAA's Modernization Plans -WAAS, GPS and other Safety and Efficiency Technology plans (Link)
• French speaking GPS news group:  Where can I find one? (Link)
• Garmin CitySelect and CityNavigator- Where can I buy a USA version new or replacement?
• Garmin Data Field definitions: GPS data display definitions for Garmin GPS (25 MAR 00)
• Garmin eTrex: User Manual,  Load additional Icons,  Interface with OziExplorer and more (25 AUG 00)
• Garmin's European Map Coverage Detail Information (15 MAY 00)
• Garmin's Map Error reporting form- Send Garmin info on any errors you find in their maps
• Garmin MapSource, Features Summary of R&R, USA Topo, and WorldMap CDs -Link (10 SEP 99)
• Garmin's Official Upload/Download Protocol in *.pdf [Adobe] format (Link)
• Garmin's Upload/Download Protocol:  Definitions and Explanations (Link)
• Garmin's Out-of-Warranty Repair Policy -Explained (17 SEP 98)
• Garmin FAQs (Frequently Asked Questions) (23 JAN 99)
• Garmin R&R file index:  Enables you to select which files to load onto your hard drive -by Gary McMeekin
• Garmin SP MEMORY CHIP: Samsung NAND FLASH chip.  Where can I find data sheets?(Link)
• Garmin Tracklogs - Which is Best for You? (15 SEP 00)
• Glossary of GPS and GIS Terms and other GPS Tutorial Information (Link)
• GPS Altitude -How Accurate? (10 FEB 01)
• GPS -Flying on Commercial Airlines -Can I make my GPS work from a passenger seat? (11 NOV 98)
• GPS Operation in Foreign Countries -Will I be Arrested? (12 OCT 98)
• GPS Receiver Accuracy -How accurate should I expect them to be? -A study by David Wilson (Link)
• GPS Receiver Accuracy -Scatter Plots by DLR (German) show error plots (Horiz/Vert) (Link)
• GPS Receiver Compatibility with Moving Map Software -What will work with WHAT? (9 FEB 99)
• GPS Receivers:  What does it take to make a typical model like the G-76S? EETimes tells us (LINK)
• GPS Satellite RF Power Output? How many watts is it? (18 FEB 99)
• GPS Satellite ORBITS - How often are the satellites in exactly the same position? (19 FEB 99)
• GPS Satellites- What happens to the OLD WORN OUT ones? (link)
  
• GPS Speed: How fast can I go? How accurate is the speed readout? (17 OCT 99)
• GPS Time -Is it locked to UTC? How do they do that? (18 APR 1999)
• Hiking using your GPS: Cass Lewart tells how to do it (18 SEP 1999)
• How Far North will my GPS operate? -Bill Straka gives us his experiences (26 MAR 99)
• Jack and Joe - Why do they write all this stuff anyway? (11 JAN 99)
• Kalman Filters -Make your own by Andy La Varre (PDF) -Bring your Matrix Algebra Book (19 AUG 98)
• Kalman Filters -Sam Wormley's references and a simple explanation (28 SEP 98)
• Longitude 1 minute,  Latitude 1 minute:  How many meters is that? Sigurd Humerfelt  tells us. (Link)
• Magellan (Official) Data Transmission Protocol v2.7 [MS Word] *[PDF], & [Errata] (1 OCT 02)
• Map Reading and Land Navigation Manual, US Army FM 3-25.26 (Link)
• MicroSoft AutoRoute (and other MS Mapping programs) won't connect to my GPS.  What do I do?
• NMEA FAQ and Sentence Definitions -Links to multiple sources (4 OCT 98)
• NMEA checksums, sentence logger and other programming subroutines for GPS (Link)
• RS232C Voltage-Levels Standard (2 AUG 98)
• Rubber Banding Routes: What does this mean?  Why would I want it?  What GPS has it? (12 JAN 00)
• Selective Availability -View tracks when it was turned off on April 20, 1997 (4 JUN 02)
• StreetPilot Map Updates -What is Garmin's Policy and Price? (7 JUL 98)
• Surveying and GIS information news group -Go there (Link)
• Time Synchronization -Set your PC's Time-of-Day Clock using GPS and other Standards (1 AUG 98)
• Topo Maps Worldwide -Why are they so hard to find? (5 JAN 99)
• TripMate/Earthmate GPS -Can I power it from my laptop computer's DB9 Connector? (10 JUL 98)
• WAAS Status -Check for any current or planned outages for your WAAS receiver. (Link)
• WHY don't you JUST ANSWER THE QUESTION??
• Waypoint Averaging: How much does this feature of a GPS improve accuracy of a waypoint? (Link)

• ArcScripts:  How do I download my Garmin data into ArcView?  Here is a solution
• Automatic Power ON when you apply external Power to your G-III PLUS: Modification (28 JUL 00)
• Aviation GPS:  An Airline Pilot gives instruction on how to use a GPS for airplane navigation (Link)
• Backcountry Guide for GPS Users -How to Hike with your GPS -Book Review (9 NOV 98)
• Boating with GPS: John Bell tells us How to use a GPS for small boat navigation (link)
• Firmware Update Failed, and my GPS does not work.  What do I do now? (10 SEP 02)
• Garmin "foot" won't mount on my Curved Dash.  Jonathan Weber tell how. (6 JUN 02)
• Garmin GPS-12XL Low Memory Battery Warning -A Possible Solution (1 OCT 02)
• Garmin MapSource Maps:  How do I install and operate the program on my computer? (Link)
• Garmin USER's MANUAL - "Working with Garmin GPS Receivers", by Dale Depriest
• GPS use by Commercial Airline Pilot:  A transport pilot tells us his experiences (12 JUN 00)
• GPS Antennas:  Want to build your own? (Link)
• G7TO/Garmin PVT Protocol Activate, View, Record; Includes Vert.-Vel. Readout (20 AUG 98)
• Magellan 330M function Flow Chart makes it easier to use your M330M, (MS.Word) (27 AUG 01)
• Ozi Explorer -Edit, Move, Delete Bogus Trackpoints - Calculate Areas (19 OCT 00)
• Pseudorange Data Processing:  You can do it with a Garmin consumer model GPSR (17 JAN 02)
• Street Atlas -Useful Tips on Enhancing Laptop and Printing Visibility (3 APR 99)
• SA Watch (Data Logger) -Setup and Operating Instructions (10 JUN 01)
• Test your GPS to Computer Serial Connection using Windows 98 Hyper Terminal (11 JUL 00)
• TrackView -by Brent Hildebrand Converts MapSource Maps into a Moving-Map Display (17 APR 01)

• APRS -Automatic Packet Reporting System -Reports your position automatically via Radio
• 3-D Plots by Height -Both 2-D Profiles and Complete Rotateable 3-D Plots for Viewing at Different Angles
• 3-D Plots of GPS Tracks -A few Pointers (26 AUG 01)
• Aviation Data Base Management software for Garmin Units
• Aviation Data Base for Magellan 315/320 puts FAA data in Consumer GPS -by Brian Wade
• DSH electronics (Software program that controls any map with GPS; incl. speech)
• Fugawi (Scanned, DRG, and BSB Charts)
• G7TO Programs (DOS/Win95/NT) -Up/Downloads for Garmin and Lowrance data  to Street Atlas 4 thru 9
• Garmin GPS Extension - Provides Ability to Transfer Data Between ArcView GIS and a Garmin GPS
• GARTrip -Upload/download to Garmin Receivers, convert GPS data formats, prints waypoints, routes, tracks
• GeoCommunity has a good selection of downloadable GPS and MAPPING software
• GPSS -GPS Software from Sunninghill, Maps for 110 Countries, Speaks in 11 languages
• GPS TrackMaker -Edits Tracklogs, and Waypoints for Magellan, Garmin, Lowrance, & MLR Receivers
• GPS Utility -Up/download to Garmin and Magellan, datum conversion, data management, and mapping
• GPSy (Macintosh)
• Karen's GPS Software Listings (MAC/PC/Newton/etc)
• MacGPS Pro Software from L.W. James Associates
• MapSite 2 (Scanned Maps)
• NEMA Simulator, GPS Simulator and Dead Reckoning Software for GPS Developers> by Sailsoft.NL
• Ozi Explorer (Scanned, BSB, and DRG Maps) Now supports Area Calculations and Trackpoint Editing
• Post Process data from your G-12 (or xl) for more accuracy:  Try ASYNC event logger
• PanTerra Software: Waypoint Management Software for Garmin/Magellan GPS has 1.6 Million Waypoints
• Softree mapping and survey software: Some are free
• Waypoint+ Program (Win-95/NT Only) for Garmin Receivers
• Windmill Data Collection software Logs Data from GPS and Other Sensors to Computer

• Aviation GPS Information Available Here
• Aviation GPS Information Available Here Too
• Dave Ransom's Orbital Information Site.  Find current orbital information on various satellites (Link)
• Garmin Prior Versions of the Vista *Legend* eMap*MapSource*Venture*G-76/Map
• Geography Resources from the Mining Company
• GeoCaching: Use your GPS in a worldwide "stash" locating game
• Italiano:  Informazioni e tutorial in Italiano sui GPS Garmin da Massimo D'Eramo
• Peter Bennett's GPS Index, Vancouver
• Sam Wormley's Comprehensive GPS Info Site
• SNAP: Links to a host of interesting GPS sites and Information
• Spanish: Pagina GPS Espanola:  GPS information in Spanish available here
• Tom Born's Garmin GPS Page in Germany -A "must see" for Garmin Information.

• Car Navigation Systems - Vendors of  Automobile Navigation and Tracking Systems (Links)
• Casio Wrist GPS: 12 channel unit with up to 3 hour battery life
• GPS Equipment Manufacturers - A very extensive listing
• GPS Equipment Listings at GPS World Magazine
• Garmin International -Receivers
• Kodak GPS enabled camera specifically for ESRI’s ArcView® GIS users.
• Lowrance, Eagle -Receivers
• Magellan, Thales -Receivers
• Raco Destinator: New GPS kit for Compaq handheld with lots of car navigation features
• SiRF -Manufactures GPS Chip Sets for OEM use (Link)
• TinyTracker: Inexpensive kit allows Ham Radio types to convert GPS to vehicle tracker
• VBOX measures acceleration, braking distances, lap times, cornering forces for racing
• Vehicle Tracking Systems -Links to Vendors of GPS vehicle tracking systems with automatic reporting

• Automatic and Autonomous control of flight for model aircraft,  parafoils: Who makes equipment?
• Batteries -Who sells them at good prices
• Blue Hills Innovations (Connectors and Cables for Garmin GPS units)
• EarthMate to NMEA data converter module -Makes EarthMate work with non-Delorme map programs
• Garmin Memory Upgrade: Proofminster upgrades 8M to 16M, 64M to 128M, and SOME 32M to 128M
• Jose Ramos (Garmin GPS Cables), Good cables, reliable supply
• Pfrank -Garmin connectors for "make your own" Garmin cables
• National Products Corp (dba RAM) -Mounting Systems for GPS Receivers
• Wolfe's (Ron) GPS Accessories -Antennas, Cables, Mounting Brackets and such.

• Aviation Flight Planning Software for various GPS Receivers
• Airplane Flight Planning: Computer mapping program assists in planning all facets of a GA flight plan
• GPS for the BLIND: Sendero's talking map system can provide help in USA and Canada (link)
• GPS Track Loggers: Portable  data loggers can log your position every second
• GPSWarn -Enter your name and address into your Garmin GPS instead of the Warning Page
• NMEAgent -MicraTek's freeware averages position, computes DOP and more
• Satellites:  How do I compute exactly WHERE they are from Almanac data?  Use ALM2TLE
• SA Watch with DGPS via the INTERNET (GPS Data Logging Software)
• Software for Sailors (Improve Your Sailing Skills)
• Visual GPS -Software to demonstrate the wanderings of GPS sigs and the accuracy of your GPS

• Delorme Street Atlas Vector and 3-D GPS Maps
• Nobeltec (Marine navigation software)
• PalmPilot PalmTop Computer and GPS -Information and Links by Dale Depriest
• Psion Software -Links to Multiple Sites, Moving Map, Garmin Protocol, NMEA (1 APR 99)
• Vista (Scanned, Vector, and Flight Sectional Charts)
• WinCE Hardware and Software -Links to Multiple Sites updated regularly by Dale Depriest

• Joe and Jack's Favorite USA GPS Vendors
• OVERSEAS GPS Dealers

• Dynamic DNS, Mailservers and Websites,  How to set up the DDNS server
• Freeware -Jack's Can't-do-Without Selection (22 MAR 99)
• Ham Radio ESTATE SALE: Equipment of W3BZ on sale (3Dec02)
• Humor:  Sometimes you GPS enthusiasts get too uptight and need a break
• LOOKOUT Portable (talking) Security Systems>One of our website's sponsors
• Joe's Computer and Ham Radio Equipment for sale
• Joe's Home Building and Repair Articles
• Joe's 12 KW DADI diesel electric generator (Product Review with Pictures)
• Local Area Networks (LAN) -Instructions and Hardware considerations (3 FEB 01)
• Miscellaneous (non GPS) Facts,  Opinions,  and Information (updated frequently)
• SPAM: How to get rid of it WITHOUT resorting to an "anti-spam" email address
• Wireless LAN brand/model interoperability and compatibility listing
  

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