GPS unit sizes are usually very small. Many units are just 4 .8 x 2.9 x 0.8 inches. Other devices have dimensions of 5 x 5 x 3 inches. The others sold in the market are also close to these figures.
GPS is an acronym for global positioning system. It is in reference to the receivers and satellites that permit these devices and people to locate a specific location. These units work via the satellites that orbit the planet twice daily.
How the System Works
These units obtain transmissions from these satellites. That is how they are able to determine data accurately. The first of these GPS satellites was launched back in 1974. The 24th was launched 20 years later. This system can be used by anyone free of charge.
Today, new satellites are continuously being developed to replace the old ones. The first GPS unit sizes were large and costly. Today, the price has gone down dramatically. The accuracy of the device has gone up too.
The device can be used by anyone when traveling. Truckers can use it to find routes and other related points of interest. Hikers and fishermen also utilize the device to avoid getting lost in the seas or the wild. Majority of these devices can be installed in cars too. Some military operations use it to guide missiles.
Bluetooth GPS Receivers
This is a system that can accept Bluetooth and satellite signals. This is a feature found in high end models. Its main selling point is hands free calling. For this to work, the phone must be compatible with Bluetooth.
Almost all of them are preloaded with maps. Street names and turn by turn directions are also common features. While some simply show the location, others have a voice feature. When choosing a unit, ensure the display is large and sunlight readable. Touchscreen technology makes it easy to look for nearby services and addresses.
Many of these units use 2D maps, but some have 3D maps. Most of today’s models allow for multiple zooming and have elevation maps. These are also customizable. For instance, you can add school zones and other areas of interest.
Most also now offer hands free calling and one touch dialing.
The GPS unit sizes are not as significant as the accuracy of the device. But they are still vital. For example, they should be small enough to fit in your pocket.