A high power RF emitter wold do the job. However, if you do it successfully, a lot of people will get real upset about not being able to use the GSM networks, they complain and the local radio licensing authority will be out to investigate. Then, you are in huge trouble. Probably not wise to do it. Alternatively, if it is to prevent GSM devices being used inside a building, a Farady cage might work. It is made of metal sheets that enclose a room or building, all connected to each other and all connected to ground. Effective, but expensive and it cuts out all other RF signals as well. == For "local" control of the airwaves, a low power transmitter can be used as a "jammer" on these frequencies. That will allow z"quiet" in areas that one wishes to control things. A movie theater, perhaps. But any attempt to "push the envelope" will be met with Federal force. Check around before running loose on this. The FCC controls the airwaves, and they aren't very patient with the patent infringement of the rights of mobile communicators to use those airwaves. And they have a little van with a couple of geeks in it to track you down. They're well equiped and good at it. Trying to seal a building against electronic communication is difficult and expensive, particularly if you have "variable" openings in it where people and/or vehicles are coming and going.
Some GPS do have a microphone and listening device. Some GPS do not have this.
The cheapest personal GPS tracking device is the Bushnell GPS. These GPS cost around $50. You can purchase the Bushnell GPS online from stores such as Best Buy.
GPS signal jammers are portable devices that literally means gadgets that stop a GPS tracking device from receiving the signal that without which they cannot pick up their position. They emit their own signal at the frequency that GPS tracking devices use, which confuses or blocks other GPS signals.
A GPS stands for Global Positioning Satellite and is a device which uses satellite location to determine your position. A caddie is a device which is a container or carrier for another item. As such, a GPS caddie is an item which holds a GPS.
A covert GPS vehicle tracking device is essentially a data logger. If you choose this, you may want to select one with an extended battery life or external GPS battery pack to reduce the amount of monitoring the GPS vehicle tracking device will require.
Some GPS do have a microphone and listening device. Some GPS do not have this.
With a GPS device.
No. A GPS device is a receiver . . . it does not emit or transmit anything.
The cheapest personal GPS tracking device is the Bushnell GPS. These GPS cost around $50. You can purchase the Bushnell GPS online from stores such as Best Buy.
A hand held GPS is certainly a portable electronic device.
GPS
If you are shopping around for a GPS device, it is an excellent idea to conduct a car GPS comparison before you make a decision on a GPS device purchase. By performing a car GPS comparison, you can identify the key features in each GPS device and compare them against the other GPS devices. When you do this comparison, it is often easy to see which of the many GPS devices is best for you.
GPS signal jammers are portable devices that literally means gadgets that stop a GPS tracking device from receiving the signal that without which they cannot pick up their position. They emit their own signal at the frequency that GPS tracking devices use, which confuses or blocks other GPS signals.
A GPS stands for Global Positioning Satellite and is a device which uses satellite location to determine your position. A caddie is a device which is a container or carrier for another item. As such, a GPS caddie is an item which holds a GPS.
A GPS device can be found in many modern pieces of technology. You can get that kind of feature in a cell phone, or you could go with a stand-alone GPS device. The abundance of devices with GPS capabilities has caused the prices to drop significantly. It is a good thing for consumers who can find a cheap GPS device online or bundled with other electronics.
A covert GPS vehicle tracking device is essentially a data logger. If you choose this, you may want to select one with an extended battery life or external GPS battery pack to reduce the amount of monitoring the GPS vehicle tracking device will require.
ANSWER: "Preloaded GPS" often refers to the memory of a GPS device (either built in flash memory or a removable memory card) having maps for a given country or region. For example a North American preloaded GPS device likely has maps for Canada, USA and Mexico. It is up to the company creating the GPS device ultimately, and do a bit of research for a GPS device's choice of maps before deciding on a unit. A GPS web forum or the manufacturer's website would be excellent resources to help ensure you get what you are looking for out of your GPS purchase.