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Chapter 1 — GPS Secrets The Garmin GPS III has a removable antenna, and unplugging it is a good way to ensure that no GPS signal lock can be obtained. The test screen may also appear of its own accord — this can occur automatically if the unit detects a failure during power up. You can use this mode to verify certain operations of the unit. For example, pressing each key will cause the corresponding key in the display to darken. Defective buttons won’t cause this to happen. Pressing the ENTER key twice in a succession will cause a graphic pixel test to run. This can be used to highlight any bad pixels on the display. Pressing the ENTER key again will further test the display. Pressing the ENTER key one more time will return you to the main test screen. Pressing the POWER/LAMP key will show up onscreen and actually cause the backlight to illuminate. Autolocating Most units make the autolocate function a default feature. he autolocate feature deletes previous satellite data (the almanac) and downloads new data. It can sometime be very handy to force the GPS to download the almanac and “rediscover” where it is in the world. Some devices, such as the Garmin iQue 3600 and Geko, have an autolocate function that’s plainly accessible to the user. Others have the feature, but it’s hidden. The following table describes the keystrokes you can use to force autolocate for units on which it’s hidden. Model Force Autolocate Key Forerunner With the unit off, press and hold down the DOWN key while pressing and releasing the POWER key. StreetPilot Hold down the PAGE and FIND buttons and then switch the unit on using the POWER button. eMap Hold FIND while powering up the unit. GPS III and GPS III+ Press and hold down the PAGE button while switching the unit on. Magellan Secret Screens Magellan is the other primary manufacturer of GPS units other than Garmin. Almost all GPS units come from one of these two manufacturers. The different types of Magellan units have very different hidden screens, so I discuss them in separate sections. 7
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Page 8: Hacking GPS Published by Wiley Publ
Page 12: Credits Acquisitions Editor Katie M
Page 18: Acknowledgments Extra special thank
Page 26: Contents Acknowledgments . . . . .
Page 30: Contents Chapter 5: Protecting Your
Page 34: Hardware Hacks part in this part Ch
Page 40: 4 Part I — Hardware Hacks Garmin
Page 44: 6 Part I — Hardware Hacks Diagnos
Page 50: 6. Select the appropriate menu numb
Page 54: Function Keys Chapter 1 — GPS Sec
Page 58: Building GPS Data Cables and Power
Page 62: Chapter 2 — Building GPS Data Cab
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Chapter 2 — Building GPS Data Cab
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42 Part I — Hardware Hacks FIGURE
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46 Part I — Hardware Hacks batter
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50 Part I — Hardware Hacks 1.5V +
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52 Part I — Hardware Hacks To GPS
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60 Part I — Hardware Hacks Summar
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66 Part I — Hardware Hacks 1. Hol
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70 Part I — Hardware Hacks Antenn
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72 Part I — Hardware Hacks There
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74 Part I — Hardware Hacks fixed
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76 Part I — Hardware Hacks low pr
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78 Part I — Hardware Hacks For mo
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80 Part I — Hardware Hacks Helix
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82 Part I — Hardware Hacks and ma
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86 Part I — Hardware Hacks You al
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90 Part I — Hardware Hacks Your s
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92 Part I — Hardware Hacks 4. If
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96 Part I — Hardware Hacks Creati
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98 Part I — Hardware Hacks 4. Tak
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100 Part I — Hardware Hacks FIGUR
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112 Part I — Hardware Hacks The U
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114 Part I — Hardware Hacks Heat
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118 Part I — Hardware Hacks 6. Pl
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120 Part I — Hardware Hacks 9. Af
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122 Part I — Hardware Hacks Summa
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Hacking the Firmware One guaranteed
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FIGURE 6-2: Healthy battery level o
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FIGURE 6-4: Files contained in the
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FIGURE 6-7: UltraEdit in action FIG
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Chapter 6 — Hacking the Firmware
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FIGURE 6-19: Exiting the applicatio
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FIGURE 6-26: Use Find Next to searc
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Magellan Summary Chapter 6 — Hack
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148 Part II — Software Hacks FIGU
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150 Part II — Software Hacks Conn
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152 Part II — Software Hacks A US
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154 Part II — Software Hacks FIGU
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156 Part II — Software Hacks 4. T
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158 Part II — Software Hacks e. S
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160 Part II — Software Hacks 2. D
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162 Part II — Software Hacks You
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GPS Data This chapter is all about
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W FIGURE 8-2: Lines of longitude Ch
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FIGURE 8-4: Waypoint information on
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FIGURE 8-8: Time zone information F
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Chapter 8 — GPS Data Different ty
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Chapter 8 — GPS Data After you ha
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FIGURE 8-17: EasyGPS detecting the
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FIGURE 8-21: Waypoints transferred
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Chapter 8 — GPS Data After you ha
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Chapter 8 — GPS Data you create a
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Chapter 8 — GPS Data 2004-11-18T
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xx.xxxxxxYYYY-MM-DDTHH:MM:SSZ
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Chapter 8 — GPS Data As normal, c
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www.waypoints.de www.swopnet.com/w
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Chapter 8 — GPS Data The most pop
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Examining the Data When you connect
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A Closer Look at NMEA Sentences Cha
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Examining NMEA Sentences Chapter 9
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s.s Time in seconds since last upda
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Chapter 9 — Examining the Data WP
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Chapter 9 — Examining the Data BW
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GPS NMEA LOG Chapter 9 — Examinin
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GPS Diagnostic Chapter 9 — Examin
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FIGURE 9-7: Playing back NMEA sente
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FIGURE 9-11: Adding errors to the s
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Chapter 9 — Examining the Data On
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Chapter 9 — Examining the Data of
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Recording Simulated NMEA Using GpsG
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Chapter 9 — Examining the Data We
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More Data Tricks In this chapter, w
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FIGURE 10-2: G7toWin configuration
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Chapter 10 — More Data Tricks The
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FIGURE 10-10: Pasting the bitmap in
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FIGURE 10-12: Contents of the downl
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FIGURE 10-16: The G7toCE configurat
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1. Turn off the device. 2. Connect
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Chapter 10 — More Data Tricks One
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Chapter 10 — More Data Tricks GP
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If the GPS time is early, then a ne
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FIGURE 10-31: Good antenna location
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FIGURE 10-34: A reradiating antenna
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FIGURE 10-37: VisualGPSXP Chapter 1
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FIGURE 10-40: Mask angle displayed
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Chapter 10 — More Data Tricks Thi
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Playtime part in this part Chapter
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256 Part IV — Playtime FIGURE 11-
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258 Part IV — Playtime This new s
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260 Part IV — Playtime One variat
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262 Part IV — Playtime As you ge
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264 Part IV — Playtime Search Pat
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266 Part IV — Playtime Look for t
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272 Part IV — Playtime TomTom sof
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274 Part IV — Playtime In additio
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276 Part IV — Playtime To keep th
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278 Part IV — Playtime Test all t
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286 Part IV — Playtime Power Prot
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288 Part IV — Playtime Do take gr
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292 Part IV — Playtime Points of
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294 Part IV — Playtime Using an a
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298 Part IV — Playtime To summari
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300 Part IV — Playtime Foxhunt Th
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302 Part IV — Playtime Go Fetch!
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304 Appendix A — GPS Primer Sever
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306 Appendix A — GPS Primer The C
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308 Appendix A — GPS Primer A B F
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310 Appendix A — GPS Primer A FIG
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312 Appendix A — GPS Primer Error
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314 Appendix B — Websites/Interne
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316 Appendix B — Websites/Interne
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318 Glossary Coordinates A unique n
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Symbols and Numerics * (asterisk),
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C/A-code (Coarse/Acquisition), 290,
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MeMap package for, 134-139 personal
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GPS III, Garmin. See also Garmin pr
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software version, displaying, 11 sw
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personal reradiating antenna, 73-74
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soft reset actions required after,
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