What can cell phone jammers be used for?
Cell phone jammers, alternatively known as cell phone blockers, are devices that interfere with radio communications, such as cellular networks, Wi-Fi, and GPS, by emitting radio waves. They typically function within a range of 10 to 40 meters.
The military and government utilize advanced technologies that can interfere with radio signals spanning several miles.
To deter customers from comparing prices while shopping, retailers can implement jammers, thus providing an opportunity to elevate their sales.
Jammers are particularly useful in environments that require silence or limited distractions. They can effectively stop interruptions, such as ringing cell phones during movies or conversations among young people in school settings.
Criminals have the capability to use signal jammers to interfere with wireless alarm systems and various radio communications, which can inhibit the ability to make emergency calls through the mobile phone network.
WiFi Interference
- How it works: WiFi uses the 2.4GHz or 5GHz frequency band. Jammers emit powerful signals in the same frequency band, causing data communications between the router and the device to be blocked.
- Impact: Internet access becomes slow or disconnects completely, and devices cannot connect to the wireless network.
GPS Jamming
- How it works: GPS signals operate on higher frequencies such as the L1 band (1575.42 MHz). Jammers cover these frequencies by emitting noise signals, making it impossible for GPS devices to receive location signals from satellites.
- Impact: Navigation devices cannot determine location, and time synchronization may also be affected. Some devices that require precise positioning (such as drones or logistics tracking systems) will fail as a result.
Cellular Network Jamming
- How it works: Cellular networks (such as 2G/3G/4G/5G) use different frequency bands. Jammers block communications between base stations and mobile phones by emitting strong signals on these frequency bands.
- Impact: Mobile phones may not be able to make calls, send text messages, or use mobile data.
