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Chapter 4 — Antenna Hacks For trucks and vans, the best place for the antenna is going to be the cab or trailer roof. Both of these offer fantastic views of the sky. Around buildings, keep the antenna away from walls. If possible, either put the antenna high up or at least well away from walls and obstructions. Keep the antenna away from trees (see Figure 4-11). FIGURE 4-11: Good and bad antenna placement on buildings In urban areas that have a large number of tall buildings, higher is better because it eliminates multipath errors caused by signal reflection (see Figure 4-12). ✓ ✗ ✗ FIGURE 4-12: Where buildings are tall, higher is better. ✓ ✗ Note one problem with the “higher is better” rule: lightning. A single lightning strike can completely destroy a GPS receiver. This is especially a problem with placing antennas on buildings. If you are going to have a permanent antenna fixed on your building, then prevention is far better than the cure. You are safer if you attach lightning arrestors to the line. ✓ 71
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Hacking GPS
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Hacking GPS Published by Wiley Publ
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Credits Acquisitions Editor Katie M
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Acknowledgments Extra special thank
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Contents Acknowledgments . . . . .
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Contents Chapter 5: Protecting Your
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Hardware Hacks part in this part Ch
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4 Part I — Hardware Hacks Garmin
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6 Part I — Hardware Hacks Diagnos
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8 Part I — Hardware Hacks Magella
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10 Part I — Hardware Hacks Magell
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12 Part I — Hardware Hacks Summar
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14 Part I — Hardware Hacks No cab
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16 Part I — Hardware Hacks FIGURE
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18 Part I — Hardware Hacks Combin
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24 Part I — Hardware Hacks 8. Car
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26 Part I — Hardware Hacks 12. A
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30 Part I — Hardware Hacks 6. Add
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34 Part I — Hardware Hacks Cradle
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38 Part I — Hardware Hacks Now ta
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Power Hacks Without power, even the
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FIGURE 3-2: AA lithium batteries Ch
Page 122: Chapter 3 — Power Hacks FIGURE 3-
Page 126: Chapter 3 — Power Hacks But what
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Page 138: Chapter 3 — Power Hacks With two
Page 142: Chapter 3 — Power Hacks 3. Take a
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Page 150: FIGURE 3-21: 12-volt output from a
Page 154: Antenna Hacks Making the most out o
Page 158: FIGURE 4-2: The Garmin eTrex receiv
Page 162: Chapter 4 — Antenna Hacks FIGURE
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Page 170: FIGURE 4-9: MMCX connector on a Hai
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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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