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Frequently Asked Questions

 

Why should I rent a GPS?
Do you have any units for sale?
How do you deliver the unit and how is it returned?
What is your privacy policy?

What do our customers have to say about us?
What is GPS?
How accurate is GPS?
How does GPS work?

 

Why should I rent a GPS? GPS rental is not for everyone. We realize that buying a GPS is the answer for some people. Rental is is an ideal solution if you:

  • lare an occasional user ($12 for 3 days)
  • want the GPS with all your destinations already entered ahead of time
  • donít want to have to update maps or software
  • need maps of other regions outside of North America
  • want to always have some of the latest features
  • want to try before you buy

Do you have any units for sale? Durham GPS is mainly a GPS rental business but occasionally we may have some used units for sale. These are fully functional units with updated maps. Give us a call at (800)585-8510

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How do you deliver the unit and how is it returned? We will arrange for delivery anywhere in the GTA or major cities in Canada through Canada Post for a flat fee of $12.00 return unless your rental fee exceeds $45 in which case the fee is waived. This amount will be added to your invoice unless you wish to pick up and drop off the unit at our Whitby location. The unit will be sent using Expedited Parcel which is a next day service in the GTA and 2-4 days to other major Canadian cities. You will be provided with a prepaid postage label for the return trip. Simply drop the unit off at any Canada Post outlet. The rental contract period will not include delivery time.

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What is GPS? The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but the government eventually made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use the basic GPS navigation service. The new traffic information feature is a subscription based service within North America but free in Europe. 

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How accurate is GPS? Today's GPS receivers are extremely accurate, thanks to their parallel multi-channel design. Our systems have 12 parallel channel receivers which are quick to lock onto satellites when first turned on and they maintain strong locks, even in dense foliage or urban settings with tall buildings. Certain atmospheric factors and other sources of error can affect the accuracy of GPS receivers.

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How does GPS work? 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. A GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude, longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and more.

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