GPS
| GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. |  |
Select manufacturer: Garmin | Medion | Navigon | Navman | Tomtom
Garmin- Can't see your GPS? |
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| Model | Memory Type(s) | Max | |
| c320 | Secure Digital | 2GB | View available memory |
| StreetPilot 111 | MMC Secure Digital |
512MB | View available memory |
Medion- Can't see your GPS? |
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| Model | Memory Type(s) | Max | |
| MD95900 | MMC Secure Digital |
2GB | View available memory |
Navigon- Can't see your GPS? |
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| Model | Memory Type(s) | Max | |
| Navigator 4 | Secure Digital | 2GB | View available memory |
Navman- Can't see your GPS? |
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| Model | Memory Type(s) | Max | |
| ICN 510 | Secure Digital | 2GB | View available memory |
| iCN 635 | Mini Secure Digital Secure Digital |
512MB | View available memory |
Tomtom- Can't see your GPS? |
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| Model | Memory Type(s) | Max | |
| Go | Secure Digital | 2GB | View available memory |