Navigational Devices

What is GPS?

The Global Positioning System (GPS) is a satellite-based navigation system made up of at least 24 satellites. GPS works in any weather conditions, anywhere in the world, 24 hours a day, with no subscription fees or setup charges. The U.S. Department of Defense originally put the satellites into orbit for military use, but they were made available for civilian use in the 1980s.

How GPS works

GPS satellites circle the Earth twice a day in a precise orbit. Each satellite transmits a unique signal and orbital parameters that allow GPS devices to decode and compute the precise location of the satellite. GPS receivers use this information and trilateration to calculate a user's exact location. Essentially, the GPS receiver measures the distance to each satellite by the amount of time it takes to receive a transmitted signal. With distance measurements from a few more satellites, the receiver can determine a user's position and display it electronically to measure your running route with a GPS Watch, find a way home with a Car GPS or adventure anywhere with a Handheld GPS.

Once your 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

I've been looking at a particular soundbar for a while now and thought I should buy it for myself for Christmas. The Sony HTST7 was arounnd 1,300 and was on sale for around 1000 at most places. Then I found that CompSource had it for around 690 dollars. I couldn't believe the price. I hesitated for a day or so and the price went up to about 703. I was very worried about the purchase how they can have the price so low. About 300 lower than anywhere else. I took a chance and purchased it and since I was able to pay with Amazon pay, I felt a little better about it. It turned out to be a very good purchase. The unit arrived quickly, within days and the box was in good condition. CompSource kept me in the loop about my purchase and shipping and tracking so I felt better about making the right decision to purchase from them. When it arrived, I can tell it was new and unopened and very well padded. I couldn't believe that a soundbar came in that huge box. It's quite a heavy unit too. The quality of the soundbar is unbelievable, sounds great also and looks great. I'm very happy with the purchase from CompSource and will certainly look here first whenever I need to buy something in the future. NxP3

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